Mechanical Design Engineer Job Listing at Flex in Littleton, MA (Job ID WD215599)

Description

Job Posting Start Date 02-18-2026 Job Posting End Date 04-17-2026

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.

To support our extraordinary teams who build great products and contribute to our growth, we're looking to add a Mechanical Design Engineer located in Littleton, MA.

Reporting to the Product Manager the Mechanical Design Engineer is responsible for designing, validating, and implementing innovative and cost-effective product solutions of complex scope to support the organization in prototype development through full-scale production.

What a typical day looks like:

• Apply complex design practices and procedures to assigned product portfolio in areas like sheet metal design/fabrication, soft tooling processes (sheet metal stamping/fabrication, tig/mig/spot welding) and equipment; telecom infrastructure products such as chassis, cabinets, racks, shelving, etc.
• Integrate multiple elements of finished design (such as backplane/interconnect, power distribution, and thermal management).
• Work with other members of the development team to support corporate design initiatives.
• Prepare recommendations for production and technology roadmaps that support customer expectations.
• Assist in generating production and technology roadmaps that support customer expectations
• Support actively customer base with design improvements that enhance manufacturability and assembly while minimizing costs.
• Provide complex technical support to customer base to enhance manufacturability and assembly while minimizing costs.

The experience we're looking to add to our team:

• Typically requires a Bachelor degree in related field or equivalent experience and training.
• Mechanical & Electrical Tools: taps and dies, alignment tools, measuring tools. Office skills: telephones, data entry, office software to include, word processing, spreadsheet and presentation package.
• Impacts operations of immediate work group. Executes and may provide input to functional processes or technologies. Assists in achieving section/sub-function objectives for a functional area.
• Limited decision-making opportunities or responsibilities; makes guided or scenario-based decisions requiring management approval. Provides input for team decisions. Decisions affect team.
• Closely supervised, normally receives detailed instructions on all work.
• Identifies own development needs and works toward them.

BO18

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?

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).