Mechanical Engineer

Job Posting Start Date 08-27-2025 Job Posting End Date 10-31-2025

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 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.

Job Summary

The Mechanical Engineer will be based in Littleton, MA reporting to the Technical Product Manager. In this role, you will be responsible for the development of hardware systems starting with the development of concepts and taking these concepts through their tollgates all the way to a potential hand-off for production.

JetCool, a Flex company, has a mission to continuously innovate next-generation cooling solutions to enable the devices that fuel a more sustainable tomorrow. JetCool designs and delivers microconvective cooling® technology for high-power electronics, enabling our customers to achieve unprecedented performance and unrivaled sustainability improvements. Our technology creates a ripple effect, enabling the businesses we serve to become more sustainable, profitable, and efficient. Join us to be part of some of today's fastest growing industries, while having a positive impact on society through technology.

What a typical day look like:

• Develop manufacturable mechanical designs to achieve system interface and structural requirements using SOLIDWORKS CAD
• Apply first principles in fluid dynamics, thermodynamics, and heat transfer to analyze design concept thermal performance
• Apply analysis and simulation tools (e.g. thermal and structural FEA, CFD) for product development and refinement
• Implement in-house prototyping tools to generate, evaluate and select concepts
• Assemble engineering drawings and engage with external vendors to procure parts and hardware

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

• Bachelor's degree in Mechanical/Aerospace/Biomedical engineering
• 2+ years of engineering experience
• Ability to balance and prioritize multiple simultaneous projects
• Excellent first principles knowledge in fluid dynamics, thermodynamics and heat transfer
• Comfortable interfacing with fabrication partners and suppliers to deliver high quality parts on time
• Demonstrated ability with hands-on builds/projects
• Ability to work independently and on small teams
• Proficiency in SOLIDWORKS CAD and drawing packages

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)

$68,400.00 USD - $94,100.00 USD Annual

Job Category
Design, Process & Technology Engineering

Is Sponsorship Available?
No

Flex 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 Flex, you must complete the application process first).

Client-provided location(s): Boxborough, MA

Job ID: Flex-WD207084

Employment Type: FULL_TIME

Posted: 2025-08-29T00:32:21