lumilens - Mechanical Product Engineer

• Proto / Engineering Validation Test - Build readiness, BOM validation, mechanical fit checks, first-article inspection at CM. • Design Validation Test - DFM/DFA reviews, tolerance audit, tooling buyoff, GD&T deviations, PFMEA launch. • Process Validation Test - Process capability studies (Cpk), yield ramp, packaging qualification, and cosmetic defect standards. • Mass Production / Sustaining - ECO execution, supplier change management, cost reduction, long-term supply continuity. • Failure Analysis - Drive root‑cause analysis for prototype, production, and field‑reported mechanical issues, delivering containment actions and long‑term corrective solutions • Collaboration - Work closely with product owners, optics, test, electronics, and manufacturing teams to resolve technical tradeoffs, maintain execution timelines, and ramp to high volume production. • Nice to have – Design manufacturing tools, jigs, and fixtures. Work directly with fabrication vendors and suppliers to communicate requirements, validate prototypes, and prove-in tools, jigs, and fixtures for production. • Own end-to-end mechanical NPI execution at CMs and Key Suppliers/Partners from proto builds through mass production release and yield stabilization. • Collaborate in material selections, interfaces, and finishes suitable for precision, optical, ESD‑sensitive, and clean manufacturing environments • Lead mechanical DFM/DFA reviews on housing, sheet metal, die-cast, injection-molded, and extruded components — translating design intent into manufacturable specifications. • Ensure clear engineering specifications, drawings, and documentation that communicate design intent across internal teams and suppliers • Develop and own Process FMEAs (PFMEA) and Control Plans for mechanical assembly lines; define inspection criteria, torque specs, and cosmetic acceptance standards (IPC-A-610, Lumilens internal). • Drive tolerance stack-up analysis reviews with CMs and Key Suppliers/Partners to ensure fit, form, and function across multi-vendor supply chains; disposition non-conformances via the MRB process. • Author and manage Engineering Change Orders (ECOs) through Lumilens' PLM system (Arena), coordinating with supply chain, CM, and design engineering for zero-impact transitions. • Conduct CM and Key Supplier/Partner site audits and process capability assessments; track and improve Cpk values for critical mechanical dimensions and sub-assembly operations. • Partner with commodity management and strategic sourcing to qualify alternate mechanical suppliers; conduct supplier technical reviews and first-article qualifications (FAI/PPAP). • Manage mechanical tooling asset lifecycle — injection mold, stamping die, and die-cast tool maintenance, repair, revision, and capacity planning across CM sites. • Collaborate with Lumilens’ Reliability Engineering team to support HALT/HASS, vibration, shock, and thermal cycling qualifications per NEBS GR-63 and Lumilens internal standards. • Drive mechanical cost reduction projects including part consolidation, DFM-driven redesigns, tooling amortization strategies, and regional sourcing optimization. • Develop and maintain Lumilens’ mechanical manufacturing standards, best-practice documents, and CM-facing work instructions. • Mentor junior mechanical product and manufacturing engineers and provide technical guidance on process escalations during high-volume ramp events. • Nice‑to‑Have Alignment • Experience owning system calculations or platform‑level mechanical architectures • Background designing automation equipment, test fixtures, or thermo‑mechanical systems • Strong root‑cause problem‑solving mindset (5 Whys, Fishbone, structured RCA) • Experience building internal tools, configuration logic, or design frameworks to scale engineering output