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About the Role

This role is end-to-end, involving problem identification, failure analysis, design, validation, and production implementation for the Gen 1 product. The engineer will focus on ongoing quality and process health, working with manufacturing partners in China and owning sustaining changes, vendor process improvements, and production tooling.

Responsibilities

• Own the full sustaining change lifecycle: problem identification → failure analysis → corrective action → design → validation → production implementation
• Design mechanical components, including injection molded plastics and sheet metal, to resolve field failures or address process gaps
• Drive process improvements at FATP and Tier 2 vendors by designing, reviewing, and implementing testers, fixtures, and jigs for IQC, IPQC, and OQC stations
• Use production yield data, field return rates, and process metrics to build data-driven justifications for design and process changes
• Set up and run workbench experiments and DOEs for evaluating corrective actions, including thermal, mechanical, and process-level characterizations
• Work directly with manufacturing vendors in China to root cause failures, improve process consistency, and qualify changes
• Own part lifecycle and change management, defining rollout timelines, coordinating across the supply chain, and ensuring clean production implementation
• Analyze customer returns and field data to drive prioritization

Requirements

• 3+ years of mechanical engineering experience with meaningful time in a manufacturing or sustaining role
• Strong mechanical design skills across injection molded plastics, sheet metal, and production tooling including test fixtures, jigs, and functional testers
• Demonstrated ability to use data to drive decisions (yield trends, SPC, field return analysis)
• Hands-on experience working with FATP and Tier 2 contract manufacturers, ideally in Asia
• Comfortable building quick experiments: setting up test rigs, instrumenting assemblies, running DOEs, interpreting results
• Strong failure analysis instincts
• Experienced in ECO and change management processes
• Willingness to travel to China regularly (estimated 30–40% of time)
• Proficient in CAD (Onshape)
• Fluent in English
• Mandarin fluency is a significant advantage and strongly preferred

Skills

• Mechanical design
• Injection molded plastics
• Sheet metal design
• Production tooling design
• Test fixture design
• Jig design
• Functional tester design
• Data analysis
• Statistical Process Control (SPC)
• Field return analysis
• Experiment design (DOE)
• Failure analysis
• ECO (Engineering Change Order)
• Change management
• CAD (Onshape)
• English fluency
• Mandarin fluency

Location

• San Francisco
• China

Work Type

• Full-time
• Hybrid

Experience Level

• 3+ years of mechanical engineering experience
• Manufacturing or sustaining role experience

About the Company

• Manufacturing Design Engineering is a critical role to achieving scale at speed.
• This role bridges the gap between NPI and Operations.
• The engineer will have direct impact on yield improvements, field return reductions, and manufacturing industrialization.