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Mechanical Product Engineer

Lumilens· Operations
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SingaporeFull-timePosted 2mo ago

About the role

Hands-on mechanical product engineer serving as the primary mechanical interface between hardware design teams and contract manufacturers/suppliers, owning from early development through NPI, volume production, and continuous improvement of Lumilens’ optical and AI infrastructure.

Responsibilities

  • 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 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 MRB.
  • Author and manage ECOs through Arena PLM; coordinate 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 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 Reliability Engineering to support HALT/HASS, vibration, shock, and thermal cycling qualifications per NEBS GR-63 and internal standards.
  • Drive mechanical cost reduction projects including part consolidation, DFM-driven redesigns, tooling amortization strategies, and regional sourcing optimization.
  • Develop and maintain 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.

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

Skills

Required:NPI executionDFM/DFATolerance analysis (GD&T)PFMEA & Control Plans

Benefits

  • Competitive salary and meaningful equity in a high-growth company
  • 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
Last updated Aug 8, 2026. Interested? Apply on the company site.

About Lumilens

Connectivity Platform for AI

Lumilens provides next-gen photonic interconnects for massively scaling out – and scaling up – AI compute infrastructure.

Photonic InterconnectsNext-Gen ManufacturingSystem-level knowledgeLumicore platformCPO/SiPh manufacturing
Company profileWebsite

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