Lead Product Development Engineer

Flex • Littleton, MA

6d

About The Position

JetCool, a Flex company, is hiring a Lead Product Development Engineer in Littleton, Massachusetts, to serve as the technical owner for a major liquid-cooling product-development program. The role leads product architecture, requirements, design decisions, technical risk management, verification, pre-production deployment, and production readiness. It reports to David Anthony Akman.

The engineer provides technical direction and execution across multidisciplinary development activities, from concept through pre-production or production. They lead system architecture and design reviews, direct prototype and pre-production builds and testing, and assess design maturity and residual risks before shipment. The role also supports supplier qualification, manufacturing transfer, customer discussions, and field investigations, while mentoring engineers without direct management authority.

JetCool develops liquid-cooling solutions for AI and high-performance computing, with the stated aim of helping build more sustainable data centers. The position is categorized as Production Engineering. The annual base-pay range is $122,600 to $168,600. Applications are accepted from October 16, 2026, through December 31, 2026, or until the position is filled; the posting may close sooner due to application volume. Sponsorship is not available.

Requirements

• 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.

Nice To Haves

• Datacenter liquid-cooling experience is strongly preferred.
• Familiarity with SolidWorks, CFD, FEA, 1D modeling, PDM/PLM, and regulated product-development environments.

Responsibilities

• 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 design verification and validation (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.

Benefits

• Medical, dental, and vision plans
• Life insurance
• Short-term and long-term disability
• Matching 401(k) contributions
• Vacation and paid sick time
• Tuition reimbursement

What This Job Offers

• Job Type: Full-time
• Career Level: Senior