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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 Position Summary The Engineering Technician supports prototype fabrication, assembly, instrumentation, testing, troubleshooting, laboratory operations, and pre-production builds for liquid-cooling products. This hands-on role works closely with mechanical, thermal, reliability, and manufacturing engineers. Key Responsibilities · Assemble, modify, and rework prototype liquid-cooling systems. · Install pumps, radiators, manifolds, tubing, hoses, fittings, sensors, and controls. · Fabricate or modify brackets, tubing, fixtures, and prototype components. · Build and operate thermal, flow, pressure, leak, endurance, and reliability test setups. · Install thermocouples, flow meters, pressure transducers, and data-acquisition equipment. · Execute test procedures and accurately record configurations, results, and anomalies. · Perform pressure testing, leak testing, flushing, filling, coolant sampling, and draining. · Support troubleshooting, teardown, inspection, and failure analysis. · Maintain laboratory equipment, calibration records, tools, and consumables. · Develop and improve work instructions and test documentation. · Support engineering, demonstration, and pre-production builds. Qualifications · Associate degree, technical certification, military training, apprenticeship, or equivalent experience. · Typically 5+ years of relevant technician, prototype, laboratory, manufacturing, automotive, HVAC, or electromechanical experience. · Strong mechanical aptitude and ability to read drawings, schematics, and BOMs. · Experience with hand tools, tubing, fittings, seals, instrumentation, and test equipment. · Strong troubleshooting, documentation, organization, and safety practices. · Liquid-cooling, HVAC, refrigeration, hydraulic, aerospace, or datacenter experience preferred. · Machining, brazing, soldering, welding, wiring, or controls experience is beneficial. What Success Looks Like · Prototypes and tests are completed safely, correctly, and on time. · Test configurations and observations are accurately documented. · Laboratory equipment remains organized and operational. · Build and serviceability issues are identified early. 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 10-21-2026 Job Posting End Date 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. $31.04 USD - $42.68 USD Hourly Job Category Production Engineering Relocation: Not eligible 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). Through the collective strength of ~150,000 team members across 30 countries and responsible, sustainable operations, Flex is the diversified manufacturing partner of choice that helps market-leading brands design, build and deliver innovative products that improve the world. A career with Flex offers the opportunity to make a difference, invest in your growth, and build great products for our customers that improve people’s lives. Together, let’s create the extraordinary! Join our talent community to learn more about job opportunities, company news and events. 
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Flextronics
US Massachusetts Littleton, United States of America
Engineering Technician.
ENGINEERING
more at Flextronics.
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