Senior Mechanical Engineer (Engineering)
Job Posting Start Date 08-27-2025 Job Posting End Date 10-31-2025Flex 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
JETCOOL Technologies, a Flex company, is seeking a dedicated, dependable Senior Mechanical Engineer in Littleton, MA to contribute to technical programs across our core data center business. The position will be responsible for executing engineering programs involving thermal analysis, mechanical design, detailed drawings, fabrication with new and existing suppliers, and environmental/thermofluidic testing. Successful candidates will be comfortable participating in the technical execution of multiple programs simultaneously but also, when needed, taking on tasks as an individual contributor to meet project deadlines. Successful candidates will be skilled in mechanical design (leading design reviews, approving engineering drawings, etc.) and be highly effective communicators to the team. The engineer should be able to think on their feet and clearly communicate technical ideas and concepts to various audiences.
JetCool has a mission to continuously innovate next-generation cooling solutions to enable the devices that fuel a more sustainable tomorrow. JetCool designs and delivers microconvective cooling® technology for high-power electronics, enabling our customers to achieve unprecedented performance and unrivaled sustainability improvements. Our technology creates a ripple effect, enabling the businesses we serve to become more sustainable, profitable, and efficient. Join us to be part of some of today's fastest growing industries, while having a positive impact on society through technology.
What a typical day looks like:
Contribute to the technical execution of engineering programs and products
Provide technical expertise to the team; motivate the team and mentor key engineers
Draw on customer specifications and deep engineering experience to verify completeness of technical requirements
Assess technical merit/soundness of solutions and provide feedback on the technical progress of a program relative to required tollgates
Review mechanical designs, verify design compatibility, satisfaction of requirements, and positive user experience
Assist the team in finding, testing and implementing solutions to complex mechanical design challenges
Guide and mentor the team in identifying and executing the technical analyses and verification tests needed to validate designs
Technically guide development efforts as prototype products graduate to production
Work with engineering leadership to guide programs through design reviews and associated toll gates
Interpret and evaluate test results with the team, distill key results, debug where needed
Develop and maintain customer network and relationships; serve as a customer technical point-of-contact
Effectively document and communicate results through various media (reports, presentations, zoom, etc.)
The experience we are looking to add to our team:
Bachelor's degree in Mechanical/Aerospace/Biomedical engineering
6+ years of engineering experience
Demonstrated experience leading the execution of multiple technical programs
Fluency with mechanical engineering design concepts, drawing best practices and fabrication capabilities
Effective team player able to guide program teams and excel in sound decision-making during tight deadlines
Demonstrated ability with hands-on builds/projects
Exceptional communication skills and the ability to create professional, clear, and effective communications in various media
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 EngineeringIs 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 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 Flex, you must complete the application process first).