Mechanical Development Engineer II

Job Posting Start Date 07-23-2025 Job Posting End Date 07-28-2025

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 and 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.

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 of Science (B.S. in mechanical or aerospace engineering) and 0-3+ years work experience, or similar background, in thermal and / or fluids engineering
• 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)$80,400.00 USD - $110,600.00 USD Annual

Job CategoryDesign, 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 [email protected] 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).