Description
Job Posting Start Date 09-17-2025 Job Posting End Date 09-22-2025Flex 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 Principal Mechanical Engineer to add to our team in Littleton, MA. Join us in shaping the future of data centers while making a significant impact on sustainability. Apply now to be part of our dedicated team of engineers and thinkers!
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:
Work with business and commercial leaders to fully understand customer requirements and translate into internal project plan including scope of work, objectives, deliverables, milestones, resource planning, scheduling, and cost estimate.
Lead a cross-functional project team through the product and system development cycle from concept development, to prototyping and validation and work closely with engineering and manufacturing leaders to ensure on-time delivery of quality solutions to the customers
Lead communication and technical exchange with customers, build and cultivate customer relationships
Develop and own, initial product functional specs and ensure the final product meet or exceed the spec and customer expectations
Lead technical problem solving and pull in cross functional team to provide innovative solutions
Engage with external vendors to procure parts and hardware, form partnerships for new capabilities
Actively manage product development stages and milestones
Manage IP generation, protection and ensure product leadership during the development cycle
Effectively document and communicate progress and results to leadership and to customers
Ensure effective and efficient technology transfer to product engineering and manufacture teams for product launch
Be intellectually curious, open to feedback and committed to ongoing professional development
The experience we are looking to add to our team:
Bachelor (or higher) of Science in engineering and 7+ years of work experience and 2+ years technical program/project management experience
Prior experience or demonstrated knowledge of the data center space focusing on liquid cooling solutions.
Excellent first principles knowledge in mechanical engineering, fluid dynamics, thermodynamics, heat transfer and electrical engineering
Track record of delivering complex technical solutions to customers with high quality and on schedule
Strong R&D project management skills and communication skills
Strong problem-solving and risk analysis skills
Ability to develop thermal fluids system
Must be able to lead customer interaction and relationship building
Ability to balance and prioritize multiple simultaneous projects
Ability to lead/work independently and lead small teams
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
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 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).Apply on company website
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