[Skip to main content](#main-content) [OpenNash Jobs](https://jobs.opennash.com/) [Hiring report](/reports/hiring/) · [All Flex jobs](https://jobs.opennash.com/companies/flex/) · [Search jobs](/search/) Flex · Littleton, MA # Lead Product Development Engineer USA, MA, Littleton Full-time Manager or lead Operations Listed on Flex’s official careers site. Posted October 16, 2026. Check that it is still open and apply there. [Apply on Flex’s careers site →](https://flextronics.wd1.myworkdayjobs.com/Careers/job/USA-MA-Littleton/Lead-Product-Development-Engineer_WD231711-1) [OpenNash Jobs](https://jobs.opennash.com/) / [Flex](https://jobs.opennash.com/companies/flex/) / Lead Product Development Engineer ## Job description 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 Lead Product Development Engineer located in Littleton, MA. Reporting to the David Anthony Akman the Lead Product Development Engineer will serve as the technical owner for a major liquid-cooling product-development program. This individual leads product architecture, requirements, design decisions, technical risk management, verification, pre-production deployment, and production readiness. ### What a typical day looks like Own the technical direction and execution of assigned product-development programs. Lead system architecture, technical tradeoffs, interface management, and major design decisions. Partner with the Thermal Systems Engineer to establish and maintain product requirements and traceability. Coordinate mechanical, thermal, electrical, controls, reliability, manufacturing, quality, and supplier-engineering activities. Define development, analysis, prototyping, risk-retirement, and DV&V plans. Lead concept reviews, PDRs, CDRs, FDRs, DFM reviews, and production-readiness reviews. Identify critical technical risks and drive timely mitigation. Direct prototype and pre-production builds, testing, troubleshooting, and failure analysis. Assess design maturity and communicate verified performance, assumptions, limitations, and residual risks before shipment. Support supplier qualification, manufacturing transfer, customer discussions, and field investigations. Mentor engineers and provide technical leadership without direct management authority. The experience we’re looking to add to our team: Bachelor’s degree in engineering or equivalent practical experience. Typically 12+ years of hardware product-development experience. Demonstrated leadership of multidisciplinary development programs. Strong knowledge of mechanical, thermal-fluid, system-integration, and product-qualification principles. Experience developing complex hardware from concept through pre-production or production. Strong technical judgment, risk-management, and executive communication skills. Hands-on experience with prototype builds, testing, and failure analysis. Datacenter liquid-cooling experience strongly preferred. Familiarity with SolidWorks, CFD, FEA, 1D modeling, PDM/PLM, and regulated product-development environments preferred. Product architecture, ownership, interfaces, and technical decisions are clear. Critical risks are identified and retired early. Leadership receives objective design-maturity assessments before deployment. Products transition successfully into reliable, repeatable production. 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 Application Deadline: Applications for this job position will be accepted for at least five days following the job posting start date below and continuing until the end date below or until the position is filled. This posting may close sooner due to application volume. Job Posting Start Date 10-16-2026 Job Posting End Date 12-31-2026 The base pay range for this position is provided below. The final base rate offered will be determined using job-related, non-discriminatory criteria, including but not limited to experience, qualifications, geographic location, education, external market data, and internal equity. $122,600.00 USD - $168,600.00 USD Annual Job Category Production 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 accessibility@flex.com 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). ## At a glance - Posted by the employer: Oct 16, 2026 - First seen by OpenNash: Oct 17, 2026 - Last checked: Oct 17, 2026 - Listed for: 1 day - Location: USA, MA, Littleton - Employment type: Full-time[Apply on Flex’s careers site →](https://flextronics.wd1.myworkdayjobs.com/Careers/job/USA-MA-Littleton/Lead-Product-Development-Engineer_WD231711-1) ## More jobs at Flex ### [Test Engineer](https://jobs.opennash.com/companies/flex/jobs/cdf05a8e492534239614/) USA, MA, Littleton ### [Director of Product Engineering (Fluid Systems and Thermal Management)](https://jobs.opennash.com/companies/flex/jobs/da60c0107e917df61cc3/) USA, MA, Littleton ### [Engineering Product Manager](https://jobs.opennash.com/companies/flex/jobs/1b008c640c24a9fcd191/) USA, MA, Littleton ### [Engineering Technician](https://jobs.opennash.com/companies/flex/jobs/68ea1038b2c2b5764247/) USA, MA, Littleton ### [Material Handler](https://jobs.opennash.com/companies/flex/jobs/081615fbddc9995947ce/) USA, MA, Littleton ## Similar jobs at other companies ### [New Product Development Engineer](https://jobs.opennash.com/companies/eaton/jobs/c13e79de275730618a91/) Eaton · Jackson, Mississippi, USA ### [Senior Product Development Engineer](https://jobs.opennash.com/companies/eaton/jobs/16f7ec1f720d4ad244cd/) Eaton · Raleigh, North Carolina, USA ### [Product Development Systems Engineer II](https://jobs.opennash.com/companies/trane-technologies/jobs/539b3c709f5f40ac870d/) Trane Technologies · La Crosse, Wisconsin, United States of America ### [Senior Systems Engineer - Product Development](https://jobs.opennash.com/companies/ge-healthcare-technologies/jobs/421e57f622e873f476ae/) GE HealthCare Technologies · Waukesha, Wisconsin, United States of America ### [VP, Medicine Development Leader - Specialty Product Development](https://jobs.opennash.com/companies/gsk/jobs/011a199293172e2256a4/) GSK · Collegeville, Pennsylvania, United States of America [Jobs in Massachusetts](/locations/us-ma/)[Operations jobs](/functions/operations/) OpenNash lists jobs from employers’ own careers sites and does not handle applications. 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