Principal Mechanical Engineer

OverviewJETCOOL 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!This range is provided by Flex. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.Base pay range$123,500.00/yr - $169,800.00/yrFlex is the diversified manufacturing partner of choice that helps market-leading brands design, build and deliver innovative products that improve the world. We believe in the power of diversity and inclusion and cultivate a workplace culture of belonging that views uniqueness as a competitive edge and builds a community that enables our people to push the limits of innovation to make great products that create value and improve people/'s lives. 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.What a typical day looks likeLead the initial design, analysis, and optimization of complex fluid systems, including pumps, fluids, tubing, and heat exchangers, for the latest computer processing chipsets.Collaborate with customer and partner teams to integrate fluid systems into overall product designs.Conduct fluid flow simulations, analyses, and tests to ensure efficient and reliable performance of fluid systems under various operating conditions.Perform detailed calculations and analysis of fluid dynamics, pressure drops, thermal performance, and material compatibility.Develop and review engineering specifications and documentation for fluid system and heat transfer components and assemblies, ensuring compliance with industry standards and regulatory requirements.Assist in maintaining a strong best practice culture, driving additional foundational knowledge and IP through research.Identify technical gaps to advocate for research & development and lead research projects, maximizing product impact and benefit.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.Contribute to the development of new product concepts and innovations in fluid system design, keeping abreast of industry trends and emerging technologies.Support the resolution of technical challenges and issues related to fluid systems throughout the product lifecycle.Experience and qualificationsBachelor of Science degree in Mechanical Engineering or related field.Minimum of 7 to 10 years of post-collegiate experience, with 4+ years in designing and engineering fluid systems, preferably within the data center thermal management/cooling, automotive, medical, or nuclear industries. Minimum of 3 years working at senior or principal engineer level.Profound expertise in fluid dynamics, thermodynamics, and heat transfer, with a strong foundation in engineering principles.Ability to independently develop product concepts, performance analysis and design experiments. Track record of new product development, preferably thermal fluid products.Strong analytical and problem-solving skills, with the ability to effectively troubleshoot and optimize fluid system performance.Excellent communication and documentation skills to convey complex technical concepts to both technical and non-technical audiences.Seniority levelMid-Senior levelEmployment typeFull-timeIndustriesAppliances, Electrical, and Electronics ManufacturingFlex is an Equal Opportunity Employer and employment selection decisions are based on merit, qualifications, and abilities. We celebrate diversity and 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 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). #J-18808-Ljbffr

Created: 2025-09-17