Job Posting Start Date 02-13-2026 Job Posting End Date 02-27-2026

At Jet Cool, 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 Jet Cool 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.
• Lead DFMEA and PFMEA activities for Jet Cool coolant distribution units.
• Collaborate with engineering and operations staff to ensure all test data is aggregated, and field data is tracked for additional DFMEA or PFMEA insights.
• 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 hardware product reliability in the data center cooling, automotive, medical, or nuclear industries.
• 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.
• Familiarity with data center cooling infrastructure (cooling modules, CDUs, dry coolers, chillers).
• Eperience testing 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

Jet Cool 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 Jet Cool, you must complete the application process first).