Mechanical Engineer

Job Posting Start Date 02-26-2026 Job Posting End Date 03-04-2026

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

To support our extraordinary teams who build great products and contribute to our growth, we are looking to add a Mechanical / Materials Science Engineer located in US California Milpitas.

Reporting to the Director, Engineering Services, the Mechanical / Materials Science Engineer is responsible for designing, validating, and implementing innovative testing solutions of complex scope to support the Customer and organization during process development, validation, reliability, and failure analysis testing during prototype and through full-scale production.

What a typical day looks like:

• Designing and implementing Lab automation equipment.
• Developing test methods for project specifications by studying product design, customer requirements, and performance standards.
• Know and understand the project scope, specifications, and any regulatory requirements that are applicable to the machine being developed.
• Performing detailed mathematical calculations to establish manufacturing and installation standards and specifications.
• Coordinate with and consult automation engineers to design, lay out, detail components on new and existing equipment.
• Work with Process or Customer engineers to help debug interactions between mechanical, electrical, and software systems.
• Attend meetings, present Analytical Lab Reports including project status and review meetings, and acceptance meetings.
• Assessing project requirements and researching to meet those requirements.
• Ensuring a product can be made reliably and will perform consistently in specified operating environments.
• Design of mechanical fixtures, adapters, and custom equipment.
• Testing, evaluating reliability and failure modes for defect analysis. modifying and re-testing the designed hardware.
• Drafting technical reports, in reference to PCBA drawings and technical documentation.
• Communicate and interface with customers, engineers, designers, and operations managers.
• Deploying Lab testing methods based on the systems at customer Products, facilities and gathering requirements.

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

• Bachelor's degree in Mechanical Engineering or Material science background
• Became lab expert on many tools in the lab in less than 2 years: CMM equipment (Zeiss and OGP), Strain Gauge using Site tester, X-Ray and Micro CT analysis, shadow moir, and reliability chambers (Halt/Hass chamber, Temp/Humidity chamber, IPX).
• Maintained great collaboration with customers from requests to report discussion.
• Draft technical reports independently.
• Execute reliability and failure analysis tests.
• Use CAD software to create useful fixturing for the lab or for customer.
• 3D printing parts
• Lead ISO/IEC 17025 2017 certification in the lab.
• Maintaining now ISO/IEC 17025 2017 per quality manual
• Create procedures for the Lab Quality Manual for the ISO 17025 certification.
• Participate Lab Gemba walks with the team.
• Takes care of maintenance and PM of the tools
• Execute Lab Roadmap, Capex equipment acquisition.
• Support section for Site Monthly newsletter.
• Utilize Six sigma methodologies.

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 California)

$72,400.00 USD - $99,500.00 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 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).