Mechanical Product Engineer

The role

The Mechanical Product Engineer serves as the primary mechanical engineering interface between hardware design teams and worldwide contract manufacturers and suppliers. This role owns the full arc from early development and NPI build planning through volume production release for optical and AI infrastructure.

What you will do

• Own end-to-end mechanical NPI execution at CMs and Key Suppliers/Partners
• Lead mechanical DFM/DFA reviews on various component types
• Ensure clear engineering specifications, drawings, and documentation
• Develop and own Process FMEAs and Control Plans
• Drive tolerance stack-up analysis reviews with CMs and Key Suppliers/Partners
• Author and manage Engineering Change Orders through Arena PLM
• Conduct CM and Key Supplier/Partner site audits and process capability assessments
• Partner with commodity management to qualify alternate mechanical suppliers
• Manage mechanical tooling asset lifecycle
• Collaborate with Reliability Engineering for qualification testing

Required qualifications

• B.S. or M.S. in Mechanical Engineering or Manufacturing Engineering
• 8+ years in product/manufacturing engineering for networking, servers, telecom, or consumer electronics hardware
• Deep DFM/DFA expertise: sheet metal, die cast, plastic injection molding, extrusions
• GD&T proficiency per ASME Y14.5; tolerance stack-up methods (RSS, worst-case)
• Hands-on CM/ODM management at Tier 1 EMS providers in Asia
• Process capability analysis: Cpk, SPC, control charting
• PLM/ECO management (Agile, Arena, Windchill, or equivalent)
• PFMEA and Control Plan development experience
• IPC-A-610 or equivalent mechanical/cosmetic inspection standards
• Strong written/verbal communication for multi-site, cross-functional teams

Nice to have

• M.S. in Mechanical or Manufacturing Engineering
• NEBS GR-63 / GR-1089 qualification test execution
• APQP / PPAP process knowledge
• Six Sigma Green Belt or Black Belt; Lean / Kaizen facilitation experience
• Familiarity with liquid cooling and advanced thermal assembly manufacturing
• NX, CREO, or SolidWorks 3D CAD proficiency
• Mandarin Chinese language skills
• PMP certification
• Design manufacturing tools, jigs, and fixtures
• Experience owning system calculations or platform-level mechanical architectures

Benefits

• Competitive salary
• Meaningful equity
• Comprehensive health, dental, and vision coverage
• Flexible time off policy
• Opportunity to work on cutting-edge technology shaping AI infrastructure
• Collaborative, high-caliber engineering environment

About the company

Lumilens is building photonics infrastructure to power AI supercomputing. They are a well-funded startup backed by Mayfield.