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Senior Mechanical Engineer; OCS

Job in San Francisco, San Francisco County, California, 94199, USA
Listing for: PsiQuantum
Full Time position
Listed on 2026-06-19
Job specializations:
  • Engineering
    Mechanical Engineer, Systems Engineer, Manufacturing Engineer, Electronics Engineer
Salary/Wage Range or Industry Benchmark: 100000 - 125000 USD Yearly USD 100000.00 125000.00 YEAR
Job Description & How to Apply Below
Position: Senior Mechanical Engineer (OCS)

Requirements

  • Strong communication & interpersonal skills across engineering, operations, quality, and supplier teams
  • Willingness to support colleagues and external partners to achieve OCS schedule, quality, and build-readiness objectives
  • Exercises independent judgement in resolving design, interface, and manufacturability tradeoffs
  • Continuous learning mindset with interest in photonics packaging, process development, and production scale-up
  • Execution of deliverables against schedule & quality targets in a fast-moving productization environment
  • Experience with subcontractor management, supplier technical coordination, and manufacturing partner support
  • Master’s Degree or above in Mechanical Engineering, Optomechanical Engineering, Packaging Engineering, or a relevant discipline
  • 5 years of experience, with a focus on optomechanical design, optoelectronic packaging, photonics packaging, or precision mechanical systems
What the job involves
  • The Senior Mechanical Design Engineer is responsible for designing highly complex optomechanical and optoelectronic packages for the Optical Circuit Switch (OCS) program
  • You will work closely with photonics, packaging, process, test, quality, supply chain, and external manufacturing partners to translate OCS architecture and requirements into buildable, manufacturable, and verifiable package designs
  • Strong design skills incorporating mechanics of materials, thermodynamics, electronics integration, optical alignment, and precision design principles are a must
  • Ownership of OCS package and subassembly designs from prototype through production readiness
  • Expertise in Design for Manufacturability, Design for Assembly, and supplier-ready build documentation
  • Expertise with GD&T for precision optomechanical interfaces, datums, fixtures, and inspection plans
  • Expertise with tolerance analysis methods for optical alignment, mechanical stack-up, FAU attach, and package interfaces
  • Generate and maintain OCS process flow documentation, build travelers, and assembly sequence definition
  • Conduct DFMEA, PFMEA, CTQ mapping, and risk analysis heat maps for OCS package and process development
  • Fixture design & fabrication for alignment, attach, metrology, handling, and production build support
  • Test set-up design & fabrication for optical, mechanical, thermal, and process verification activities
  • Generate & maintain BOM’s, build standards, material callouts, and configuration-controlled package documentation
  • Generate & maintain Specification & Drawing Trees for OCS package, subassembly, fixture, and supplier documentation
  • Ability to execute basic structural, thermal, warpage, and tolerance analyses to down-select designs and reduce build risk
  • Comfortable with PDM / Arena, ECO discipline, drawing release, supplier documentation packages, and revision control
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Position Requirements
10+ Years work experience
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