Flex (Flextronics)

Job Posting Start Date 04-13-2026 Job Posting End Date 06-26-2026

At JetCool, a Flex company, we’re at the forefront of liquid cooling innovation, delivering advanced solutions that empower our partners in AI and high-performance computing. United by a shared purpose, our teams are pushing the limits of what’s possible and tackling complex challenges.

A career at JetCool offers the opportunity to make a real impact by helping build smarter, more sustainable data centers. Together, we’re not just advancing technology — we’re redefining cooling standards to create a more sustainable tomorrow.

Job Summary

To support our extraordinary teams who build great products and contribute to our growth, we’re looking to add a Mechanical Development engineer located in Littleton, MA.

Reporting to the Product Manager the Mechanical Development engineer The Sr. Mechanical Design Engineer will own the design, analysis, validation, and refinement of mechanical components and assemblies that enable reliable, high efficiency liquid cooling. They will work closely with Thermal, Electrical, Product Development, Manufacturing, and Quality teams to take products from concept through launch and into scalable production.

What a typical day looks like:

Mechanical Design & Development

• Own mechanical design for liquid cooling components including cold plates, manifolds, quick-disconnects, tubing assemblies, housings, and chassis interfaces.
• Create and manage detailed CAD models, 2D drawings, GD&T, and tolerance stack-ups to ensure robust, manufacturable designs.
• Select materials and finishes to address corrosion, galvanic compatibility, cleanliness, pressure containment, and long-term durability in liquid cooling environments.
• Drive sealing strategies using O-rings, gaskets, welds, brazes, and adhesives matched to coolant chemistry and operating conditions.

Engineering Analysis

• Perform engineering calculations and simulations related to mechanical stress, thermal expansion, fatigue, vibration, flow/pressure, and structural integrity.
• Collaborate with thermal engineers to optimize mechanical features influencing flow distribution, pressure drop, fin/channel geometry, and heat transfer efficiency.
• Conduct DFM reviews with suppliers to align machining, brazing, and fabrication methods with design requirements.

Prototyping & Validation

• Build and iterate on prototypes to evaluate fit, finish, assembly, and performance.
• Develop mechanical validation plans for pressure tests, leak testing, burst testing, vibration/shock, environmental exposure, thermal cycling, and dimensional inspection.
• Design test fixtures and support automated data collection where needed.
• Lead root cause analysis for failures (e.g., leaks, deformation, material incompatibility) and implement corrective design changes.

Manufacturing & Supplier Engagement

• Collaborate with manufacturing engineering and suppliers on fabrication, machining, brazing, plating, and sealing processes.
• Define critical-to-quality (CTQ) characteristics and participate in supplier qualification.
• Review and approve tooling, control plans, and inspection criteria for new mechanical parts.
• Support build events (EVT/DVT/PVT) and ensure mechanical components meet functionality, quality, and reliability targets.

Cross‑Functional Collaboration

• Work with Program Management and Product Development to translate product requirements into mechanical specifications.
• Partner with Thermal and Electrical teams to ensure system-level integration of cooling hardware with processors, boards, and rack infrastructure.
• Provide input to serviceability, reliability, manufacturability, and cost trade-off discussions.
• Support customer evaluations, pilot deployments, and field feedback analysis.

The experience we’re looking to add to our team:

• BS/MS in Mechanical Engineering or equivalent experience.
• 7+ years developing complex mechanical components or assemblies for electro mechanical systems; experience with liquid cooling or fluid systems strongly preferred.
• Strong proficiency with CAD (SolidWorks, Creo, NX), drawing generation, and GD&T (ASME Y14.5).
• Experience designing for precision machining, brazing, plating, elastomer sealing, and pressure rated components.
• Hands-on experience with pressure/leak testing, dimensional inspection, materials evaluation, and mechanical validation testing.
• Familiarity with materials (copper, aluminum, stainless steel, polymers, elastomers) and their behavior in liquid coolant environments.
• Strong fundamental technical expertise in mechanical design and structural evaluation.
• Strong working knowledge of fluid dynamics and heat transfer principles.
• Excellent communication skills and ability to lead technical decisions across teams.

BO18

What you'll receive for the great work you provide:

• Full range of medical, dental, and vision plans
• Life Insurance
• Short-term and Long-term Disability
• Matching 401(k) Contributions
• Vacation and Paid Sick Time
• Tuition Reimbursement

Pay Range (Applicable to Massachusetts)

$104,100.00 USD - $143,100.00 USD Annual

Job Category

Design, Process & Technology Engineering

Is Sponsorship Available?

No

JetCool is an Equal Opportunity Employer and employment selection decisions are based on merit, qualifications, and abilities. We do not discriminate based on: age, race, religion, color, sex, national origin, marital status, sexual orientation, gender identity, veteran status, disability, pregnancy status, or any other status protected by law. We're happy to provide reasonable accommodations to those with a disability for assistance in the application process. Please email [email protected] and we'll discuss your specific situation and next steps (NOTE: this email does not accept or consider resumes or applications. This is only for disability assistance. To be considered for a position at JetCool, you must complete the application process first).

Job Posting Start Date 04-09-2026 Job Posting End Date 07-01-2026

At JetCool, a Flex company, we’re at the forefront of liquid cooling innovation, delivering advanced solutions that empower our partners in AI and high-performance computing. United by a shared purpose, our teams are pushing the limits of what’s possible and tackling complex challenges.

A career at JetCool offers the opportunity to make a real impact by helping build smarter, more sustainable data centers. Together, we’re not just advancing technology — we’re redefining cooling standards to create a more sustainable tomorrow.

Job Summary

To support our extraordinary teams who build great products and contribute to our growth, JetCool is looking to add a Sales Engineer located in Littleton, MA.

Reporting to the Vice President of Marketing and Partnerships, this role supports our OEM group, with a primary focus on supporting and expanding our partnership with Dell and other global system manufacturers. This role blends deep technical fluency with customer‑facing leadership, helping OEM partners understand how JetCool’s liquid‑to‑liquid and liquid‑to‑air cooling architectures integrate into their server platforms and align with end‑customer requirements.

You will serve as the technical bridge between JetCool’s engineering teams and OEM customers, ensuring our SmartPlates, CDUs, and full‑stack cooling solutions meet the thermal, mechanical, and integration needs of next‑generation AI and high‑density compute systems.

Success in this role requires the ability to translate complex thermal/fluid‑dynamics concepts into clear, compelling narratives tailored to diverse audiences—from system architects to procurement managers.

What a typical day looks like:

• Lead technical discovery with Dell and other OEM customers to understand system‑level thermal requirements for AI and HPC platforms
• Map JetCool’s liquid‑to‑liquid and liquid‑to‑air cooling architectures to OEM server designs, rack‑level strategies, and customer deployment models
• Serve as the primary technical interface for customer engagements, guiding customers through solution feasibility, integration, and performance expectations
• Support sales cycles by contributing to quotes, configuration analysis, RFP/RFQ responses, technical documentation, and customer‑facing content
• Gather and interpret OEM requirements, specifications, and system documentation for JetCool Engineering
• Collaborate with Engineering to define, refine, and communicate cooling solutions—including cold plates, manifolds, CDUs, and rack‑level integration
• Evaluate server and rack architectures (Dell PowerEdge, GPU platforms, AI accelerators, etc.) to ensure compatibility with JetCool solutions
• Develop and deliver technical presentations that highlight JetCool’s differentiation in thermal performance, efficiency, and sustainability
• Present thermal analyses in a clear, consumable format for both engineering and business stakeholders
• Adapt technical depth and messaging in real time based on audience, context, and customer priorities

The experience we’re looking to add to our team:

• B.S. in Mechanical Engineering (or related discipline)
• Strong foundation in fluid mechanics or heat transfer (experience with both preferred)
• 3+ years in pre‑sales engineering, OEM engagement, or customer‑facing technical roles
• Ability to interpret and communicate complex engineering analyses
• Strong communication, presentation, and customer‑facing skills
• Experience with fluid‑based mechanical designs or thermal systems is preferred
• Exposure to CFD tools (ANSYS, Icepak, FloTHERM) is a plus
• Experience applying heat‑transfer and fluid‑mechanics fundamentals to real‑world cooling solutions is preferred
• Familiarity with server architectures, AI accelerators, and OEM design cycles (Dell experience strongly preferred)

What you'll receive for the great work you provide:

• Full range of medical, dental, and vision plans
• Life Insurance
• Short-term and Long-term Disability
• Matching 401(k) Contributions
• Vacation and Paid Sick Time
• Tuition Reimbursement

Pay Range (Applicable to Massachusetts)

$107,400.00 USD - $147,700.00 USD Annual

Job Category

Design, Process & Technology Engineering

Is Sponsorship Available?

No

JetCool is an Equal Opportunity Employer and employment selection decisions are based on merit, qualifications, and abilities. We do not discriminate based on: age, race, religion, color, sex, national origin, marital status, sexual orientation, gender identity, veteran status, disability, pregnancy status, or any other status protected by law. We're happy to provide reasonable accommodations to those with a disability for assistance in the application process. Please email [email protected] and we'll discuss your specific situation and next steps (NOTE: this email does not accept or consider resumes or applications. This is only for disability assistance. To be considered for a position at JetCool, you must complete the application process first).

Job Posting Start Date 03-27-2026 Job Posting End Date 05-29-2026

Crown Technical Systems, a Flex Company, is a leader in power distribution and protection systems concentrating on sophisticated, state-of-the-art relay and control panels, medium voltage switchgear, and enclosures (power/control buildings/ E-Houses). We specialize in customized, turn-key solutions that ensure safe, secure, and reliable power distribution.

Working at Crown Technical Systems offers a dynamic and rewarding career path for individuals seeking to power the world. Through hands-on training, mentorship, and a culture of internal promotion, we empower you to reach your full potential and contribute to projects that truly matter.

Job Summary

Crown Technical Systems (A Flex Company) is seeking a Technical Design Lead focused on Prefabricated Modular Solutions for our U.S. region, within our Critical Power business. The Technical Design Lead is a senior technical leader responsible for driving the creation, standardization, and ongoing development of prefabricated modular data center reference designs across Flex’s Integrated Modular Solutions portfolio. This role serves as the technical authority for modular data center architecture spanning electrical, mechanical, controls, and structural integration to enable scalable, repeatable, and optimized designs.

The Technical Design Lead will be responsible for the creation of a series of modular reference designs focused on MV and LV power distribution systems to the data center white space. The role will collaborate closely with cross-functional teams, regional stakeholders, and external partners to position Flex & Crown Technologies as a leader in modular prefabricated data center solutions.

Key Responsibilities

Reference Design Ownership & System Architecture

• Lead creation of modular data center reference design sets (LOD100–300+).
• Define system architecture, redundancy strategies, performance criteria.
• Own GA, SLD, cooling concepts, and schematics.

Integrated Solutions Leadership

• Provide end-to-end technical leadership from concept to construction documents.
• Align technical disciplines to unified system architecture.
• Champion standardization and modularity to reduce cycle times.

Agile Team Leadership & Cross-Functional Coordination

• Lead small agile engineering teams.
• Run design reviews and manage technical decisions.
• Partner with CTO, Marketing, Product Line Managers and Program Managers.

R&D and Solution Innovation

• Collaborate with R&D and regional engineering teams to define reference design requirements and prioritize features and specifications based on market needs
• Advocate for sustainability and ESG initiatives, ensuring products align with specific environmental and regulatory standards (UL, NEC, NFPA, ASHRAE, IBC, IEC, CE)
• Stay informed on evolving compliance requirements and industry best practices
• Validate calculations, CFD inputs, coordination studies

Additional Responsibilities Include:

• Drafting & oversight of CAD/BIM Integration
• Guide Revit/BIM teams.
• Review drawings for accuracy and manufacturability
• Delivery, Timelines & Execution Excellence
• Manage engineering schedules and deliverables.
• Support costed BOM generation.

Experience & Qualifications

• Bachelor’s degree in Electrical, Mechanical, or Systems Engineering (preferred).
• 5+ years data center design or modular data center design experience.
• Strong electrical and mechanical design experience.
• Proficiency with AutoCAD and understanding of BIM.
• Experience with hyperscale or large colocation customers.

Skills & Abilities

• Deep systems integration understanding.
• Strong communicator with cross functional teams.
• Ability to lead cross-functional engineering teams.

What Success Looks Like

• Complete reference design packages accelerating market delivery.
• Standardization reducing rework and engineering cycle time.
• High customer trust and improved solution competitiveness.

What you'll receive for the great work you provide:

• Full range of medical, dental, and vision plans
• Life Insurance
• Short-term and Long-term Disability
• Matching 401(k) Contributions
• Vacation and Paid Sick Time
• Tuition Reimbursement

Job Category

Design, Process & Technology Engineering

Is Sponsorship Available?

No

Crown is an Equal Opportunity Employer and employment selection decisions are based on merit, qualifications, and abilities. We do not discriminate based on: age, race, religion, color, sex, national origin, marital status, sexual orientation, gender identity, veteran status, disability, pregnancy status, or any other status protected by law. We're happy to provide reasonable accommodations to those with a disability for assistance in the application process. Please email [email protected] and we'll discuss your specific situation and next steps (NOTE: this email does not accept or consider resumes or applications. This is only for disability assistance. To be considered for a position at Crown, you must complete the application process first).

Job Posting Start Date 03-17-2026 Job Posting End Date 05-15-2026

Crown Technical Systems, a Flex Company, is a leader in power distribution and protection systems concentrating on sophisticated, state-of-the-art relay and control panels, medium voltage switchgear, and enclosures (power/control buildings/ E-Houses). We specialize in customized, turn-key solutions that ensure safe, secure, and reliable power distribution.

Working at Crown Technical Systems offers a dynamic and rewarding career path for individuals seeking to power the world. Through hands-on training, mentorship, and a culture of internal promotion, we empower you to reach your full potential and contribute to projects that truly matter.

Job Summary

To support our extraordinary teams who build great products and contribute to our growth, we’re looking to add a Verification & Validation Engineer located in Fontana, CA. The ideal candidate has a strong engineering background and solid understanding of process and quality engineering principles.

Reporting to the Director of Engineering, the Verification & Validation Engineer is responsible for ensuring that products, systems, and components meet design intent, performance requirements, reliability expectations, and regulatory standards through structured validation and verification activities. This role will collaborate closely with design engineering, manufacturing, and quality teams to ensure robust production performance and manufacturability.

What a typical day looks like:

• Develop and execute verification and validation plans (V&V) to confirm product performance against design specifications and requirements.
• Design test procedures, test fixtures, and validation protocols for mechanical systems and assemblies.
• Perform functional, environmental, reliability, and performance testing; Analyze test results and generate technical reports and validation summaries.
• Ensure traceability between requirements, test plans, and verification results.
• Provide technical expertise on mechanical systems, components, materials, and assemblies.
• Support product development through design reviews, risk assessments, and failure analysis.
• Evaluate mechanical performance including load conditions, fatigue, vibration, thermal behavior, and environmental stresses.
• Assist in the design and improvement of test setups and mechanical test rigs.
• Work closely with Quality Engineering and Manufacturing to ensure test plans align with production processes.
• Support design for manufacturability (DFM) and design for reliability (DFR) initiatives.
• Participate in root cause analysis, CAPA, and continuous improvement activities.
• Contribute to process validation, first article inspections, and production qualification testing.
• Maintain documentation in accordance with engineering standards, quality systems, and regulatory requirements.
• Generate and maintain: Test protocols, Verification matrices, Validation reports, Engineering change documentation
• Ensure traceability between design requirements, validation results, and product release documentation.
• Partner with design engineers, manufacturing engineers, suppliers, and quality teams to resolve design and performance issues.
• Provide input during product development phases including prototype, pilot, and production release.
• Support supplier validation and component qualification activities when necessary.
• Performs other related duties as assigned.

The experience we’re looking to add to our team:

• Bachelor’s degree in Mechanical Engineering or related engineering discipline.
• At least 5 years of related experience and/or training in validation, verification, product testing, process engineering, or quality engineering.
• Strong understanding of mechanical systems and assemblies.
• Experience developing and executing test plans, test protocols, and validation reports.
• Strong technical documentation ability.
• Knowledge of engineering validation methodologies and qualification testing.
• Familiarity with root cause analysis techniques (5 Whys, Fishbone, etc.).
• Experience working with cross-functional teams in product development environments.
• Excellent verbal and written communication skills.
• Excellent organizational skills and attention to detail.
• Excellent time management skills with a proven ability to meet deadlines.
• Strong analytical and problem-solving skills.
• Proficient with Microsoft Office Suite and CAD software.

What you'll receive for the great work you provide:

• Full range of medical, dental, and vision plans
• Life Insurance
• Short-term and Long-term Disability
• Matching 401(k) Contributions
• Vacation and Paid Sick Time
• Tuition Reimbursement

Pay Range (Applicable to California)

$80,400.00 USD - $110,600.00 USD Annual

Job Category

Design, Process & Technology Engineering

Is Sponsorship Available?

No

Crown is an Equal Opportunity Employer and employment selection decisions are based on merit, qualifications, and abilities. We do not discriminate based on: age, race, religion, color, sex, national origin, marital status, sexual orientation, gender identity, veteran status, disability, pregnancy status, or any other status protected by law. We're happy to provide reasonable accommodations to those with a disability for assistance in the application process. Please email [email protected] and we'll discuss your specific situation and next steps (NOTE: this email does not accept or consider resumes or applications. This is only for disability assistance. To be considered for a position at Crown, you must complete the application process first).

Job Posting Start Date 03-18-2026 Job Posting End Date 05-15-2026

Crown Technical Systems, a Flex Company, is a leader in power distribution and protection systems concentrating on sophisticated, state-of-the-art relay and control panels, medium voltage switchgear, and enclosures (power/control buildings/ E-Houses). We specialize in customized, turn-key solutions that ensure safe, secure, and reliable power distribution.

Working at Crown Technical Systems offers a dynamic and rewarding career path for individuals seeking to power the world. Through hands-on training, mentorship, and a culture of internal promotion, we empower you to reach your full potential and contribute to projects that truly matter.

Job Summary

To support our extraordinary teams who build great products and contribute to our growth, we’re looking to add a Lead Engineer located in Fontana, CA.

Reporting to the Director of Engineering, the Lead Engineer is responsible for overseeing the overall engineering design process. This role will lead cross-functional technical development from concept through production, ensuring products meet design intent, performance requirements, manufacturability, cost goals, and quality standards. The Lead Engineer will guide engineering design decisions, coordinate validation and test activities, and partner with operations, quality, and manufacturing teams to ensure a seamless transition into full production.

What a typical day looks like:

• Manage, schedule, and track all Engineering tasks and related assigned project work; schedules, directs, and trains other engineers and designers in their project tasks and deliverables.
• Provide technical direction, design oversight, and engineering leadership throughout the entire engineering design lifecycle.
• Review and approve engineering designs, specifications, and drawings for readiness and manufacturability.
• Collaborate with cross-functional engineering teams (mechanical, electrical, firmware, software, manufacturing engineering) to ensure cohesive product development.
• Reviews and approves documents to be submitted to the customer and released for manufacturing, including drawings, BOMS, fabrication and assembly work orders, and other related documents.
• Direct and execute development, engineering, design, drafting, and documentation of assemblies, and the incorporation of purchased components, electrical wiring, and related assemblies using in-house and outsourced resources.
• Read and understand all customer documentation provided: specifications, General Assembly drawings, plan view drawings, electrical single line and schematic drawings, wiring diagrams, detail fabrication drawings, BOMs, etc.
• Collaborate with customers regarding specification/design questions and clarifications.
• Creates improvements and implement standardized designs and processes to increase efficiency in production (lower cost and time, increase quality).
• Perform and/or audit mechanical engineering calculations for design as needed.

The experience we’re looking to add to our team:

• Bachelors degree in Mechanical Engineering or related engineering field.
• At least 7 years of relevant work experience in engineering; experience in full product lifecycle development is a plus.
• Strong understanding of design principles and manufacturing processes with engineering knowledge of common materials and methods of fabrication.
• Experience coordinating and leading cross-functional engineering teams.
• Strong analytical and problem-solving skills.
• Excellent verbal and written communication skills.
• Excellent organizational skills and attention to detail.
• Excellent time management skills with a proven ability to meet deadlines.
• Ability to collaborate in team environments.

What you'll receive for the great work you provide:

• Full range of medical, dental, and vision plans
• Life Insurance
• Short-term and Long-term Disability
• Matching 401(k) Contributions
• Vacation and Paid Sick Time
• Tuition Reimbursement

Pay Range (Applicable to California)

$104,100.00 USD - $143,100.00 USD Annual

Job Category

Design, Process & Technology Engineering

Is Sponsorship Available?

No

Crown is an Equal Opportunity Employer and employment selection decisions are based on merit, qualifications, and abilities. We do not discriminate based on: age, race, religion, color, sex, national origin, marital status, sexual orientation, gender identity, veteran status, disability, pregnancy status, or any other status protected by law. We're happy to provide reasonable accommodations to those with a disability for assistance in the application process. Please email [email protected] and we'll discuss your specific situation and next steps (NOTE: this email does not accept or consider resumes or applications. This is only for disability assistance. To be considered for a position at Crown, you must complete the application process first).

Job Posting Start Date 03-17-2026 Job Posting End Date 05-15-2026

At JetCool, a Flex company, we’re at the forefront of liquid cooling innovation, delivering advanced solutions that empower our partners in AI and high-performance computing. United by a shared purpose, our teams are pushing the limits of what’s possible and tackling complex challenges.

A career at JetCool offers the opportunity to make a real impact by helping build smarter, more sustainable data centers. Together, we’re not just advancing technology — we’re redefining cooling standards to create a more sustainable tomorrow.

Job Summary

To support our exceptional teams in building innovative products, we are seeking a Principal Thermal/Mechanical R&D Engineer based in Littleton, MA. Reporting to the Sr. Director of Research & Development, the Principle Thermal/Mechanical R&D Engineer role is responsible for creating and implementing advanced, cost-effective thermal and mechanical designs that deliver outstanding product performance from early development through full-scale production. The Principal Engineer will provide technical leadership and mentorship while applying deep expertise in mechanical design, fluid dynamics, and heat transfer. In addition, this position will work closely with customers to deliver JetCool’s cutting-edge cooling solutions and foster strong technical relationships.

What a typical day looks like:

• Drive innovation by introducing new ideas and critical thinking to advance cooling technologies for improved performance, manufacturability, and reliability.
• Lead the conceptual design, analysis, and optimization of complex fluid systems, including pumps, fluids, tubing, and heat exchangers, for next-generation processors.
• Perform advanced fluid flow simulations, analyses, and validation tests to ensure optimal performance under various operating conditions while collaborating with customer and cross-functional teams to integrate fluid systems into overall product designs.
• Develop and review engineering specifications, and documentation for fluid system and heat transfer components and assemblies, ensuring compliance with industry standards and regulatory requirements.
• Oversee prototype fabrication, testing, and validation, diagnosing and resolving technical issues during development phases and provide technical guidance and mentorship to junior engineers.
• Assist in maintaining a strong best practice culture and driving additional foundational knowledge and IP through research.
• Identify technical gaps, advocate for R&D initiatives, IP, and lead research projects to maximize product impact and value.

The experience we’re looking to add to our team:

• Master's (Thesis required) degree in Mechanical Engineering or related field.
• Minimum of 7 years of post-collegiate experience in designing and engineering thermal fluid systems, preferably within the data center cooling, automotive, combustion, aerospace, medical, or nuclear industries.
• Profound expertise in fluid dynamics, thermodynamics, and heat transfer, with a strong foundation in engineering principles.
• Strong analytical and problem-solving skills, with the ability to effectively troubleshoot and optimize fluid system performance.
• Impacts the medium-term (semi-annual/annual) direction and financial or operational success of the function. Approves and/or creates functional processes or technologies. Executes and provides input to functional strategic plans and objectives for site. Assists in developing plans for structuring and implementing major initiatives.
• Excellent communication skills to convey complex technical concepts to both technical and non-technical audiences.
• Be a good person and a good team player.
• Demonstrates skills in teaching/leading and/or mentoring. Models appropriate behavior in support of Flex values.

BO18

What you'll receive for the great work you provide:

• Full range of medical, dental, and vision plans
• Life Insurance
• Short-term and Long-term Disability
• Matching 401(k) Contributions
• Vacation and Paid Sick Time
• Tuition Reimbursement

Pay Range (Applicable to Massachusetts)

$138,300.00 USD - $190,100.00 USD Annual

Job Category

Design, Process & Technology Engineering

Is Sponsorship Available?

No

JetCool is an Equal Opportunity Employer and employment selection decisions are based on merit, qualifications, and abilities. We do not discriminate based on: age, race, religion, color, sex, national origin, marital status, sexual orientation, gender identity, veteran status, disability, pregnancy status, or any other status protected by law. We're happy to provide reasonable accommodations to those with a disability for assistance in the application process. Please email [email protected] and we'll discuss your specific situation and next steps (NOTE: this email does not accept or consider resumes or applications. This is only for disability assistance. To be considered for a position at JetCool, you must complete the application process first).

Job Posting Start Date 03-07-2026 Job Posting End Date 05-25-2026

Crown Technical Systems, a Flex Company, is a leader in power distribution and protection systems concentrating on sophisticated, state-of-the-art relay and control panels, medium voltage switchgear, and enclosures (power/control buildings/ E-Houses). We specialize in customized, turn-key solutions that ensure safe, secure, and reliable power distribution.

Working at Crown Technical Systems offers a dynamic and rewarding career path for individuals seeking to power the world. Through hands-on training, mentorship, and a culture of internal promotion, we empower you to reach your full potential and contribute to projects that truly matter.

Job Summary

To support our extraordinary teams who build great products and contribute to our growth, we’re looking to add a/an Product Line Manager – Busway located in Dallas, TX.

Reporting to the Product Line Director - Busway the Product Line Manager – Busway will be responsible for P&L analysis, product roadmap, customer engagement, market strategy, pricing recommendations, operational excellence, and R&D input, with a strong emphasis on compliance standards. The role will collaborate closely with cross-functional teams, regional stakeholders, and external partners to position Anord Mardix as a leader in busway solution provider and critical power.

What a typical day looks like:

• Develop and recommend product line strategies tailored to U.S. market trends, customer needs, and regulatory requirements
• Identify and assess new business opportunities, including partnerships and channels, to expand market presence
• Work closely with sales, marketing, engineering, operations, and other internal teams to ensure alignment and successful product delivery
• Support the execution of go-to-market plans and product launches
• Monitor and analyze P&L performance for the Busway product portfolio in the U.S., providing insights and recommendations to maximize profitability and growth in our go to market approach.
• Prepare business cases and financial models to support investment decisions in product development, engineering.
• Conduct ongoing research to understand U.S.  market dynamics, customer requirements, and competitor offerings
• Provide market insights and voice of the customer to inform product development, pricing, and positioning
• Collaborate with R&D and engineering teams to define product requirements and prioritize features based on market needs
• Develop and own product roadmap(s) for your product offer
• Contribute to the development of innovative, sustainable solutions that meet or exceed U.S. regulatory standards and aligns to our customer’s sustainability objectives.
• Advocate for sustainability and ESG initiatives, ensuring products align with U.S.-specific environmental and regulatory standards

The experience we’re looking to add to our team,

• Bachelor’s degree in engineering, Business, or related field required, MBA Preferred
• 5-10 Years experience in product management, or a related field, ideally in busway or low voltage critical power systems
• Demonstrated experience in P&L analysis, strategic planning, and business case development within the U.S.
• Strong understanding of U.S. market dynamics, regulatory frameworks, and industry standards (UL, NEC, NFPA, etc.)
• Experience supporting sustainability initiatives and ESG implementation
• Experience with hyperscale and colocation markets is a plus
• Multilingual skills and willingness to travel within U.S. are strong assets

EC37

What you'll receive for the great work you provide:

• Full range of medical, dental, and vision plans
• Life Insurance
• Short-term and Long-term Disability
• Matching 401(k) Contributions
• Vacation and Paid Sick Time
• Tuition Reimbursement

Job Category

Design, Process & Technology Engineering

Is Sponsorship Available?

No

Crown is an Equal Opportunity Employer and employment selection decisions are based on merit, qualifications, and abilities. We do not discriminate based on: age, race, religion, color, sex, national origin, marital status, sexual orientation, gender identity, veteran status, disability, pregnancy status, or any other status protected by law. We're happy to provide reasonable accommodations to those with a disability for assistance in the application process. Please email [email protected] and we'll discuss your specific situation and next steps (NOTE: this email does not accept or consider resumes or applications. This is only for disability assistance. To be considered for a position at Crown, you must complete the application process first).

Job Posting Start Date 01-28-2026 Job Posting End Date 04-27-2026

Crown Technical Systems, a Flex Company, is a leader in power distribution and protection systems concentrating on sophisticated, state-of-the-art relay and control panels, medium voltage switchgear, and enclosures (power/control buildings/ E-Houses). We specialize in customized, turn-key solutions that ensure safe, secure, and reliable power distribution.

Working at Crown Technical Systems offers a dynamic and rewarding career path for individuals seeking to power the world. Through hands-on training, mentorship, and a culture of internal promotion, we empower you to reach your full potential and contribute to projects that truly matter.

Job Summary

To support our extraordinary teams who build great products and contribute to our growth, we’re looking to add a Sr. Electrical Engineering Manager located in Fontana, CA.

Reporting to the Director of Engineering, the Sr. Electrical Engineering Manager provides strategic and technical leadership for the electrical engineering department. This role is responsible for overseeing engineering operations, driving innovation, and ensuring successful execution of projects through hands-on guidance and tactical flexibility. This role requires a strong technical engineering background, proven leadership capabilities, and the ability to collaborate cross-functionally to drive engineering excellence and project success.

What a typical day looks like:

• Define and execute long-term engineering strategies and align them with company goals, regulatory frameworks, and industry advancements.
• Champion initiatives related to innovation and modernization within the industry.
• Lead and mentor a team of electrical engineers and test technicians, fostering a culture of innovation, accountability, and continuous improvement.
• Represents engineering in strategic customer engagements; builds and maintains strong relationships with key customers.
• Leads cross-functional initiatives to improve customer satisfaction and product reliability; participates in shaping customer strategy and retention in partnership with business development group.
• Oversee the design, development, testing, and validation of electrical systems and components for new and existing products related to substations, switchgear, transformers, protective relays, and power distribution.
• Drives collaboration with cross-functional teams including mechanical engineering, project management, and manufacturing to ensure design for manufacturability.
• Manage project budgets, schedules, and resource allocation to meet operational and strategic goals.
• Ensure compliance with industry standards, safety regulations, and company quality standards.
• Stay current with emerging technologies and industry trends to guide strategic planning and innovation.
• Support recruitment, onboarding, and professional development of engineering staff.
• Provide technical guidance and decision-making support on complex engineering challenges.
• Performs other duties as assigned.

The experience we’re looking to add to our team:

• Bachelor’s or Master’s degree in Electrical Engineering or a related field.
• 10+ years of progressive experience in electrical engineering, including 5+ years in a leadership role
• Technical knowledge of protection & control systems, medium voltage switchgear protection, low voltage systems for substation control buildings for AC & DC power, and power systems analysis.
• Knowledge of ANSI, IEEE, NEC, and other industry applicable standards and codes.
• Proven track record of managing engineering teams and complex projects.
• Strong knowledge of electrical design principles, tools, and regulatory standards.
• Excellent communication, organizational, and problem-solving skills.
• Experience with budget management and strategic planning.
• Professional Engineer (PE) license preferred.

What you'll receive for the great work you provide:

• Full range of medical, dental, and vision plans
• Life Insurance
• Short-term and Long-term Disability
• Matching 401(k) Contributions
• Vacation and Paid Sick Time
• Tuition Reimbursement

Pay Range (Applicable to California)

$166,800.00 USD - $229,300.00 USD Annual

Job Category

Design, Process & Technology EngineeringRelocation: Eligible for domestic and international relocation

Is Sponsorship Available?

No

Crown is an Equal Opportunity Employer and employment selection decisions are based on merit, qualifications, and abilities. We do not discriminate based on: age, race, religion, color, sex, national origin, marital status, sexual orientation, gender identity, veteran status, disability, pregnancy status, or any other status protected by law. We're happy to provide reasonable accommodations to those with a disability for assistance in the application process. Please email [email protected] and we'll discuss your specific situation and next steps (NOTE: this email does not accept or consider resumes or applications. This is only for disability assistance. To be considered for a position at Crown, you must complete the application process first).

Job Posting Start Date 02-11-2026 Job Posting End Date 05-29-2026

Crown Technical Systems, a Flex Company, is a leader in power distribution and protection systems concentrating on sophisticated, state-of-the-art relay and control panels, medium voltage switchgear, and enclosures (power/control buildings/ E-Houses). We specialize in customized, turn-key solutions that ensure safe, secure, and reliable power distribution.

Working at Crown Technical Systems offers a dynamic and rewarding career path for individuals seeking to power the world. Through hands-on training, mentorship, and a culture of internal promotion, we empower you to reach your full potential and contribute to projects that truly matter.

Job Summary

To support our extraordinary teams who build great products and contribute to our growth, we’re looking to add a Electrical Engineering Manager located in Dallas*,* TX.

Reporting to the Director of Engineering, the Electrical Engineering Manager provides strategic and technical leadership for the electrical engineering department. This role is responsible for overseeing engineering operations, driving innovation, and ensuring successful execution of projects through hands-on guidance and tactical flexibility. This role requires a strong technical engineering background, proven leadership capabilities, and the ability to collaborate cross-functionally to drive engineering excellence and project success.

What a typical day looks like:

• Define and execute long-term engineering strategies and align them with company goals, regulatory frameworks, and industry advancements.
• Champion initiatives related to innovation and modernization within the industry.
• Lead and mentor a team of electrical engineers and test technicians, fostering a culture of innovation, accountability, and continuous improvement.
• Represents engineering in strategic customer engagements; builds and maintains strong relationships with key customers.
• Leads cross-functional initiatives to improve customer satisfaction and product reliability; participates in shaping customer strategy and retention in partnership with business development group.
• Oversee the design, development, testing, and validation of electrical systems and components for new and existing products related to substations, switchgear, transformers, protective relays, and power distribution.
• Drives collaboration with cross-functional teams including mechanical engineering, project management, and manufacturing to ensure design for manufacturability.
• Manage project budgets, schedules, and resource allocation to meet operational and strategic goals.
• Ensure compliance with industry standards, safety regulations, and company quality standards.
• Stay current with emerging technologies and industry trends to guide strategic planning and innovation.
• Support recruitment, onboarding, and professional development of engineering staff.
• Provide technical guidance and decision-making support on complex engineering challenges.
• Performs other duties as assigned.

The experience we’re looking to add to our team:

• Bachelor’s or Master’s degree in Electrical Engineering or a related field.
• 8+ years of progressive experience in electrical engineering, including 2+ years in a leadership role
• Technical knowledge of protection & control systems, medium voltage switchgear protection, low voltage systems for substation control buildings for AC & DC power, and power systems analysis.
• Knowledge of ANSI, IEEE, NEC, and other industry applicable standards and codes.
• Proven track record of managing engineering teams and complex projects.
• Strong knowledge of electrical design principles, tools, and regulatory standards.
• Excellent communication, organizational, and problem-solving skills.
• Experience with budget management and strategic planning.
• Professional Engineer (PE) license preferred.

KR13

What you'll receive for the great work you provide:

• Full range of medical, dental, and vision plans
• Life Insurance
• Short-term and Long-term Disability
• Matching 401(k) Contributions
• Vacation and Paid Sick Time
• Tuition Reimbursement

Job Category

Design, Process & Technology EngineeringRelocation: Not eligible

Is Sponsorship Available?

No

Crown is an Equal Opportunity Employer and employment selection decisions are based on merit, qualifications, and abilities. We do not discriminate based on: age, race, religion, color, sex, national origin, marital status, sexual orientation, gender identity, veteran status, disability, pregnancy status, or any other status protected by law. We're happy to provide reasonable accommodations to those with a disability for assistance in the application process. Please email [email protected] and we'll discuss your specific situation and next steps (NOTE: this email does not accept or consider resumes or applications. This is only for disability assistance. To be considered for a position at Crown, you must complete the application process first).

Job Posting Start Date 03-30-2026 Job Posting End Date

At JetCool, a Flex company, we’re at the forefront of liquid cooling innovation, delivering advanced solutions that empower our partners in AI and high-performance computing. United by a shared purpose, our teams are pushing the limits of what’s possible and tackling complex challenges.

A career at JetCool offers the opportunity to make a real impact by helping build smarter, more sustainable data centers. Together, we’re not just advancing technology — we’re redefining cooling standards to create a more sustainable tomorrow.

Job Summary

JetCool, a Flex Company, delivers patented direct‑to‑chip liquid cooling solutions purpose‑built for AI and high‑density compute environments. Powered by JetCool’s proprietary microconvective cooling technology and full‑stack portfolio—from SmartPlates to Coolant Distribution Units (CDUs)—we enable leading processor and system designers to push performance, efficiency, and reliability to new limits.

The Pre-Sales Engineer based in either Littleton, MA, Austin, TX or Milpitas, CA serves as a technical advisor to customers requiring liquid cooled Cold Plates (SmartPlates) and Cooling Distribution Units (CDU), bridging thermal and mechanical engineering depth with clear, confident customer communication. This role owns pre‑sales technical engagement ensuring JetCool solutions meet customer thermal performance and AI System and Rack integration needs.  Success in this role requires the ability to communicate complex fluid‑dynamics and heat‑transfer Engineering analysis into concise, customer‑ready explanations, while adapting technical depth in real time based on audience and context.

What a Typical Day Looks Like:

• Lead technical discovery conversations to understand customer thermal requirements for AI Systems
• Serve as the primary technical interface in customer engagements
• Support sales engagements including RFP/RFQ responses and drafting content.
• Gather the customer requirements and technical documents for Engineering to develop the liquid cooling solution
• Partner with Engineering in understanding and communicating the liquid cooling solution
• Evaluate AI system‑level integration across cold plates, manifolds, CDUs, and rack‑level cooling solutions
• Develop and deliver technical presentations highlighting JetCool’s technologies’ differentiation
• Present thermal technical analyses in a clear, customer‑consumable format for both engineers and procurement managers
• “Read the room” and adjust technical depth, pacing, and messaging based on audience feedback

The Experience We’re Looking to Add to Our Team:

• B.S. Mechanical Engineering
• Foundation in fluid mechanics or heat transfer (experience with both preferred)
• 3+ years of industry experience, including pre-sales, engineering, or customer facing technical roles
• Experience working with fluid based mechanical designs
• Strong communication and presentation skills
• Exposure to CFD analysis tools (e.g., ANSYS, Icepak, FloTHERM) is preferred but not required
• Apply fundamentals of fluid mechanics and heat transfer to help JetCool Engineering develop liquid cooling solutions to meet customer requirements is preferred

What you'll receive for the great work you provide:

• Full range of medical, dental, and vision plans
• Life Insurance
• Short-term and Long-term Disability
• Matching 401(k) Contributions
• Vacation and Paid Sick Time
• Tuition Reimbursement

Pay Range (Applicable to Massachusetts)

$107,400.00 USD - $147,700.00 USD Annual

Job Category

Design, Process & Technology EngineeringRelocation: Eligible for domestic relocation only

Is Sponsorship Available?

No

JetCool is an Equal Opportunity Employer and employment selection decisions are based on merit, qualifications, and abilities. We do not discriminate based on: age, race, religion, color, sex, national origin, marital status, sexual orientation, gender identity, veteran status, disability, pregnancy status, or any other status protected by law. We're happy to provide reasonable accommodations to those with a disability for assistance in the application process. Please email [email protected] and we'll discuss your specific situation and next steps (NOTE: this email does not accept or consider resumes or applications. This is only for disability assistance. To be considered for a position at JetCool, you must complete the application process first).

Job Posting Start Date 02-12-2026 Job Posting End Date 04-30-2026

Crown Technical Systems, a Flex Company, is a leader in power distribution and protection systems concentrating on sophisticated, state-of-the-art relay and control panels, medium voltage switchgear, and enclosures (power/control buildings/ E-Houses). We specialize in customized, turn-key solutions that ensure safe, secure, and reliable power distribution.

Working at Crown Technical Systems offers a dynamic and rewarding career path for individuals seeking to power the world. Through hands-on training, mentorship, and a culture of internal promotion, we empower you to reach your full potential and contribute to projects that truly matter.

Job Summary

To support our extraordinary teams who build great products and contribute to our growth, we’re looking to add a Mechanical Engineering Managerlocated in Dallas, TX.

Reporting to the Director of Design Engineering the Mechanical Engineering Manager role is responsible for providing leadership and direction for the mechanical engineering department. This position provides technical and project leadership using hands-on approaches while exercising tactical flexibility while focused on the strategic goals.

What a typical day looks like:

• Hires and trains the mechanical engineering staff.
• Oversees the daily workflow and schedules of the department.
• Conducts performance evaluations that are timely and constructive.
• Handles discipline and termination of employees in accordance with company policy.
• Actively oversees the implementation of company’s safety, quality, and cultural guidelines.
• Manage technical communications with the customers, clearly presents CTS designs and follows-up with customer’s feedback.
• Assigns Mechanical Engineering personnel to projects and tasks, as required, manages team’s performance, and proactively assists his/her direct reports to meet project goals and schedules.
• Provides estimates of labor and period of performance for Mechanical Engineering efforts in support of proposals.
• Provides robust design with reliability and manufacturability, and meets cost & schedule
• Actively coordinate the definition of design inputs, the creation of the design descriptions and specifications.
• Leads by example in implementing current designing tools, practices, processes, and regulatory requirements.
• Verifies designs, trouble-shoots, conducts, documents and/or oversees any resultant processes of corrective actions.
• Directly serve, as appropriate, as Project Engineer on certain projects.
• Performs other related duties, as assigned
• Highly experienced in traditional mechanical design, simulations, design for manufacturing and assembly for mechanical systems such as enclosures for buildings’ equipment or switchgears.
• Proven records of personal and technical leadership.
• Required competence in 3D solid modelling, proficiency with the latest mechanical CAD tools (e.g., SolidWorks) and the simulation tools required.
• Experience in structural design and analysis, familiarity with structural FEA
• Familiarity with building codes, ASME, ANSI
• Knowledge of manufacturing processes and ability to work well with assemblers and other manufacturing personnel.
• Excellent problem-solving skills, critical thinking skills, troubleshooting skills, and strong written and verbal communication skills.
• Proficient with MS Office programs, including Microsoft Projects.
• Must have excellent organization, supervisory, managerial and leadership skills to manage a team of engineers and technical staff.
• Familiarity with ISO policies and safety regulations
• Excellent budgeting and cost containment skills.
• Ability to gather, analyze and summarize data in order to draw rational, fact-based conclusions

The experience we’re looking to add to our team:

• Bachelor’s Degree in Mechanical Engineering; Master’s Degree preferred.
• Minimum 5 years’ experience in Mechanical Design
• Minimum 2 years’ Managerial experience and/or proven leadership skills
• Knowledge of coding and standards associated with the Electrical Industry
• Professional Engineer certification is a plus.

KR14

What you'll receive for the great work you provide:

• Full range of medical, dental, and vision plans
• Life Insurance
• Short-term and Long-term Disability
• Matching 401(k) Contributions
• Vacation and Paid Sick Time
• Tuition Reimbursement

Job Category

Design, Process & Technology EngineeringRelocation: Not eligible

Is Sponsorship Available?

No

Crown is an Equal Opportunity Employer and employment selection decisions are based on merit, qualifications, and abilities. We do not discriminate based on: age, race, religion, color, sex, national origin, marital status, sexual orientation, gender identity, veteran status, disability, pregnancy status, or any other status protected by law. We're happy to provide reasonable accommodations to those with a disability for assistance in the application process. Please email [email protected] and we'll discuss your specific situation and next steps (NOTE: this email does not accept or consider resumes or applications. This is only for disability assistance. To be considered for a position at Crown, you must complete the application process first).

Job Posting Start Date 03-25-2026 Job Posting End Date 04-03-2026

At JetCool, a Flex company, we’re at the forefront of liquid cooling innovation, delivering advanced solutions that empower our partners in AI and high-performance computing. United by a shared purpose, our teams are pushing the limits of what’s possible and tackling complex challenges.

A career at JetCool offers the opportunity to make a real impact by helping build smarter, more sustainable data centers. Together, we’re not just advancing technology — we’re redefining cooling standards to create a more sustainable tomorrow.

Job Summary

To support our extraordinary teams who build great products and contribute to our growth, we’re looking to add a Reliability Engineer located in Littleton, MA.

Reporting to the Product Manager the Reliability Engineer will influence design choices, design and maintain reliability evaluation tools to maximize product reliability, and lead DFMEA and PFMEA efforts supporting our coolant distribution units. The position will lead the identification of reliability related test needs, planning, and evaluation. Successful candidates will be comfortable taking on tasks as an individual contributor as well as working together with the team as required to meet project deadlines.

What a typical day looks like:

• Lead the development of new and the maintenance of existing coolant distribution unit reliability models.
• Work with engineering and operations to establish reliability test plans to support the introduction of new products or product updates.
• Assist in maintaining a strong best practice culture and driving additional foundational knowledge and IP.
• Leading failure root cause investigations.
• Provide technical guidance and mentorship to junior engineers, fostering a culture of continuous learning and development.
• Participate in design reviews, presenting technical findings and recommendations to internal and external stakeholders.
• Support the resolution of technical challenges and issues related to coolant distribution units throughout the product lifecycle.

The experience we’re looking to add to our team:

• Bachelor of Science degree in Mechanical Engineering or related field.
• Minimum of 5 years of post-collegiate experience, preferably working in Testing/ Automation/ Mechanical Engineering

• Excellent communication skills to help facilitate more complete FMEAs and distill key reliability findings for internal and external stakeholders.

• Proven experience in NPI process participation and/or leadership.

• Design and development of Reliability Plan
• Fixture Design and creation
• Experience testing Thermal and fluid systems

What you'll receive for the great work you provide:

• Full range of medical, dental, and vision plans
• Life Insurance
• Short-term and Long-term Disability
• Matching 401(k) Contributions
• Vacation and Paid Sick Time
• Tuition Reimbursement

Pay Range (Applicable to Massachusetts)

$104,100.00 USD - $143,100.00 USD Annual

Job Category

Design, Process & Technology Engineering

Is Sponsorship Available?

No

JetCool is an Equal Opportunity Employer and employment selection decisions are based on merit, qualifications, and abilities. We do not discriminate based on: age, race, religion, color, sex, national origin, marital status, sexual orientation, gender identity, veteran status, disability, pregnancy status, or any other status protected by law. We're happy to provide reasonable accommodations to those with a disability for assistance in the application process. Please email [email protected] and we'll discuss your specific situation and next steps (NOTE: this email does not accept or consider resumes or applications. This is only for disability assistance. To be considered for a position at JetCool, you must complete the application process first).

Job Posting Start Date 02-23-2026 Job Posting End Date 04-20-2026Flex is the diversified manufacturing partner of choice that helps market-leading brands design, build and deliver innovative products that improve the world.A career at Flex offers the opportunity to make a difference and invest in your growth in a respectful, inclusive, and collaborative environment. If you are excited about a role but don't meet every bullet point, we encourage you to apply and join us to create the extraordinary.

Job Summary

Located in Austin TX and Reporting to our VP of Enterprise AI Strategy, we are eagerly looking to hire a Director Enterprise AI Product Management for our Enterprise Forecasting .

The AI Product Manager – Enterprise Forecasting is responsible for shaping, orchestrating, and scaling AI‑powered forecasting capabilities across the enterprise. This role spans the full manufacturing value chain, from customer demand forecasting through supply chain planning, material requirements planning (MRP), factory scheduling and shop‑floor intelligence, and enterprise financial forecasting.

This leader will identify high‑value opportunities to leverage advanced analytics and AI; translate manufacturing, commercial, and operational needs into clear AI product requirements; and drive delivery through close collaboration with business stakeholders, digital & data teams, and the AI Engineering & Lab.

The role emphasizes strategic alignment, roadmap ownership, cross‑functional orchestration, and business value realization.

What a typical day looks like:

• Develop and own the end‑to‑end AI strategy for enterprise forecasting across Demand, Supply, MRP, Production, and Financials.
• Build a multi‑year roadmap of AI forecasting products, including value cases, readiness assessments, and sequencing.
• Translate forecasting and planning challenges into well‑scoped AI use cases, including problem statements, success metrics, data requirements, and deployment pathways.
• Ensure alignment with enterprise strategy, planning cycles, and digital architecture.
• Drive design, testing, integration, and scaling of forecasting AI solutions into operational environments and workflows.
• Coordinate delivery across AI Engineering, Data Science, IT, Data Platform, Operations Technology, and functional SMEs.
• Ensure the organization is prepared to adopt AI‑driven forecasting tools through clear process design, training, and governance.
• Communicate progress, risks, and business outcomes to senior leadership.

The skills we are looking to add to our team:

• 10+ years of experience in product management, AI/ML product ownership, or enterprise forecasting roles.
• Deep knowledge of forecasting across at least one major domain:
• Customer Demand Planning
• Supply & Inventory Planning
• Material Requirements Planning (MRP)
• Production Scheduling / Factory Planning
• Financial Forecasting
• Experience working with data, analytics, and AI‑enabled solutions in manufacturing or supply‑chain‑intensive environments.
• Proven ability to translate business needs into technical requirements and AI solution designs.
• Strong leadership, communication, and stakeholder management skills across technical and non‑technical audiences.
• Experience leading cross‑functional initiatives in large, matrixed organizations.
• Familiarity with agile and iterative delivery methodologies.

Some of our preferred experiences:

• Experience deploying AI/ML forecasting models (e.g., time‑series, gradient boosting, deep learning).
• Understanding of enterprise planning systems (e.g., Onestream, Kinaxis).
• Background in manufacturing, industrial engineering, supply-chain analytics, or operations research.
• Experience operationalizing AI solutions into factory systems, planning environments, or financial planning processes.

CA47

SS26

AA01

What you'll receive for the great work you provide:

• Full range of medical, dental, and vision plans
• Life Insurance
• Short-term and Long-term Disability
• Matching 401(k) Contributions
• Vacation and Paid Sick Time
• Tuition Reimbursement

Job Category

Design, Process & Technology Engineering

Is Sponsorship Available?

NoFlex is an Equal Opportunity Employer and employment selection decisions are based on merit, qualifications, and abilities. We do not discriminate based on: age, race, religion, color, sex, national origin, marital status, sexual orientation, gender identity, veteran status, disability, pregnancy status, or any other status protected by law. We're happy to provide reasonable accommodations to those with a disability for assistance in the application process. Please email [email protected] and we'll discuss your specific situation and next steps (NOTE: this email does not accept or consider resumes or applications. This is only for disability assistance. To be considered for a position at Flex, you must complete the application process first).

Job Posting Start Date 03-09-2026 Job Posting End Date 05-08-2026

At JetCool, a Flex company, we’re at the forefront of liquid cooling innovation, delivering advanced solutions that empower our partners in AI and high-performance computing. United by a shared purpose, our teams are pushing the limits of what’s possible and tackling complex challenges.

A career at JetCool offers the opportunity to make a real impact by helping build smarter, more sustainable data centers. Together, we’re not just advancing technology — we’re redefining cooling standards to create a more sustainable tomorrow.

Job Summary

To support our extraordinary teams who build great products and contribute to our growth, we’re looking to add a Senior Thermal Systems Engineer located in Littleton, MA.

Reporting to the Product Manager the Senior Thermal Systems Engineer will own the end-to-end architecture, analysis, validation, and deployment of direct-to-chip (D2C) cooling systems used to cool high-TDP CPUs/GPUs/accelerators. They will be the technical leader partnering with Product Management, Mechanical/Electrical Engineering, Manufacturing, Quality, Reliability, and key customers to deliver robust, scalable products that meet performance, reliability, and cost targets.

What a typical day looks like:

Own thermal architecture & modeling

• Define system-level thermal requirements (TDP range, ΔT, coolant temperature, flow rate, pressure drop, acoustic & power budgets).
• Apply first principles in fluid dynamics and heat transfer to analyze design concept thermal performance
• Build and validate 1D/3D models (e.g., FloEFD, Icepak, MacroFlow, ANSYS Fluent, COMSOL) for cold plates, manifolds, quick-disconnects (QDs), pumps, and CDUs.
• Perform sensitivity trade-offs (flow distribution, fin geometry, microchannel optimization, TIM selection, manifold topology).

Design liquid cooling subsystems

• Specify and refine cold plates, CDUs, manifolds, hoses/QDs, reservoirs, filters, sensors, and controls.
• Collaborate with ME/EE on mechanical stack-up, materials, corrosion mitigation (galvanic compatibility), and leak risk reduction.
• Define DFX (DFM/DFA/DFT) and lead EVT/DVT/PVT from prototypes to mass production.

Validate and qualify

• Develop test plans for thermal performance, pressure integrity, leak detection, long-term reliability (HALT/HASS), and contamination control (particulates, biogrowth).
• Execute lab and rack-scale testing (pump curves, flow balance, ΔP mapping, heat load emulation, transient behavior).
• Drive failure analysis and corrective actions (FMEAs, 8D/PPS).

Partner across the business

• Work with Product Management on PRDs, roadmaps, and business cases.
• Support manufacturing process development (leak/pressure test stations, purge and fill, cleanliness criteria) and supplier selection/qualification.
• Engage with customers: define requirements, run pilots, analyze fleet telemetry, and support deployment at scale.

The experience we’re looking to add to our team:

• BS/MS in Mechanical Engineering or Aerospace Engineering or related field (PhD a plus).
• 5+ years experience in thermal design/validation for high-power electronics (preferably data center/server/HPC).
• Excellent first principles knowledge in fluid dynamics, thermodynamics, and heat transfer
• Proven expertise in liquid cooling, including CFD, pressure drop/flow modeling, and thermal metrology.
• Hands-on with lab instrumentation (flow meters, pressure transducers, thermocouples/RTDs, DAQ, leak detectors) and test automation (Python, LabVIEW, or similar).
• Experience bringing products from EVT → DVT → PVT → ramp, including DFX and supplier engagement.
• Excellent technical communication and documentation skills.

BO18

What you'll receive for the great work you provide:

• Full range of medical, dental, and vision plans
• Life Insurance
• Short-term and Long-term Disability
• Matching 401(k) Contributions
• Vacation and Paid Sick Time
• Tuition Reimbursement

Pay Range (Applicable to Massachusetts)

$123,500.00 USD - $169,800.00 USD Annual

Job Category

Design, Process & Technology Engineering

Is Sponsorship Available?

No

JetCool is an Equal Opportunity Employer and employment selection decisions are based on merit, qualifications, and abilities. We do not discriminate based on: age, race, religion, color, sex, national origin, marital status, sexual orientation, gender identity, veteran status, disability, pregnancy status, or any other status protected by law. We're happy to provide reasonable accommodations to those with a disability for assistance in the application process. Please email [email protected] and we'll discuss your specific situation and next steps (NOTE: this email does not accept or consider resumes or applications. This is only for disability assistance. To be considered for a position at JetCool, you must complete the application process first).

Job Posting Start Date 02-25-2026 Job Posting End DateFlex is the diversified manufacturing partner of choice that helps market-leading brands design, build and deliver innovative products that improve the world.A career at Flex offers the opportunity to make a difference and invest in your growth in a respectful, inclusive, and collaborative environment. If you are excited about a role but don't meet every bullet point, we encourage you to apply and join us to create the extraordinary.

Job Summary

The Principal Applications Engineer will be based in San Jose, CA reporting to the Director, Global Field Application Engineering. The Applications Engineer will be accountable for providing technical guidance and design-in help to customers on a post-sales basis to enable delivery of design, fabrication, and assembly goals, per customers’ expectations.

What a Typical Day Looks Like:

• Uses technical knowledge of products and associated development tools to assist customers on complex issues.
• Conducts complex qualification/verification testing onsite (local labs) and coordinates closely with design engineering to solve any issues and deliver results on time. The onsite part can be 50-75% of the time (the rest of the time would be remote/work from home).
• Develops and maintains close relationships to work very closely with internal engineering and business development teams.
• Build close relationships with the customer technical teams to work and collaborate closely with them.
• Provides technical expertise during product development by defining/conveying customer product needs and translating these needs into new product recommendations and specifications.
• Reviews customer requirements, identifies and communicates potential issues and provides recommendations that will meet both the capabilities Flex and the specifications of the customer.
• Creates clarity: identifies and clearly communicates existing and potential design issues both internally and externally.
• Coordinates product integration efforts between component suppliers, Flex, and the customer.
• Develops and presents technical seminars for customers and Field Application Engineers to promote employers' manufacturing capabilities, services, available technologies, manufacturing process and quality.
• Provides best in class, complex, technical assistance by answering and closing all customer and program management technical questions related to manufacturing capabilities including design, fabrication, and assembly abilities.
• Defines initial project/product scope and prepares project plans to meet customers' expectations.
• Prepares detailed project plans by documenting customers' requirements and incorporating design and manufacturing capabilities to meet customers’ expectations.
• Prepares and maintains required documentation.
• May be required to sit at customer site (locally) for prolonged periods of time.

The Experience We’re Looking to Add to Our Team:

• Bachelor's degree in electrical engineering (master's preferred).
• 8+ years of design and/or applications engineering experience in the power conversion area (dc-dc conversion preferred).
• Demonstrates detailed expertise in complex functional/technical area with a deep understanding of power electronics and power conversion considerations.
• Is extremely comfortable in the lab environment and can expertly conduct verification/qualification testing for extended periods of time at the (local) lab/s.
• Provides key technical support to mid-large customers promptly.
• Executes and provides input to functional strategic plans and objectives for the group/site.

EC37

What you'll receive for the great work you provide:

• Full range of medical, dental, and vision plans
• Life Insurance
• Short-term and Long-term Disability
• Matching 401(k) Contributions
• Vacation and Paid Sick Time
• Tuition Reimbursement

Pay Range (Applicable to California)

$150,000.00 USD - $206,300.00 USD Annual

Job Category

Design, Process & Technology EngineeringRelocation: Not eligible

Is Sponsorship Available?

NoFlex is an Equal Opportunity Employer and employment selection decisions are based on merit, qualifications, and abilities. We do not discriminate based on: age, race, religion, color, sex, national origin, marital status, sexual orientation, gender identity, veteran status, disability, pregnancy status, or any other status protected by law. We're happy to provide reasonable accommodations to those with a disability for assistance in the application process. Please email [email protected] and we'll discuss your specific situation and next steps (NOTE: this email does not accept or consider resumes or applications. This is only for disability assistance. To be considered for a position at Flex, you must complete the application process first).