Principal Engineer

Job Posting Start Date 10-14-2025 Job Posting End Date 12-01-2025

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

We are seeking to add a Mechanical Development Engineer to our team. The Mechanical Design Engineer will be responsible to lead the mechanical design activity implementing innovative and cost effective product solutions in order to support the organization from prototype development through full-scale production.

What a typical day looks like:

• Define new mechanical product architecture, analyze performances and provide feasibility studies
• Lead and execute the mechanical system, subsystem and part design of products from requirement specification up to transfer to manufacturing including fabrication, testing, verification and validation of engineering prototypes
• Support the creation of product design documentation requirements
• Work with mechanical engineers in design and development of miniaturized system
• Be a technical lead closing the gap between Marketing Team and Mechanical Design teams
• Work within the project team adopting time and cost effective solutions
• Provide high quality technical reports supported by simulations and/or lab tests
• Investigate new technologies and trends, assisting in generating production and technology roadmaps that support customer expectations with close relationship with vendors
• Support actively customer base with design improvements that enhance manufacturability and assembly while minimizing costs.
• Promoter and coordinator of design reviews and DFx reviews

The Experience we are looking to add to our team:

• Degree in Mechanical/Aerospace/Biomedical engineering.
• Typically requires 8 years of experience in engineering with proven technical leadership.
• Previous experience in designing medical devices, handset devices or white goods is a plus
• Use of CAD tool suite.

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)

$123,500.00 USD - $169,800.00 USD Annual

Job Category
Design, Process & Technology Engineering

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).

Client-provided location(s): Boxborough, MA

Job ID: Flex-WD200181

Employment Type: FULL_TIME

Posted: 2025-10-07T20:03:53