Jobs · Engineering · California

Fabrication Technician

Sesame · San Francisco, CA · 1 wk ago
Engineering$120k–$180k/yrFull-time

Responsibilities

  • Commission, set up, and bring online new fabrication equipment including 3D printers (FDM, SLA/DLP, SLS), desktop CNC mills, laser cutters, and other benchtop tools.
  • Own routine maintenance, calibration, and consumables management for all prototyping equipment; proactively prevent downtime.
  • Troubleshoot equipment issues, coordinate service calls, and maintain maintenance logs.
  • Evaluate and recommend new tools, materials, and processes to expand lab capability.
  • Fabricate mechanical parts using additive, subtractive, and manual methods to meet drawing specifications and tolerances.
  • Perform post-processing: support removal, sanding, bonding, tapping, heat-setting inserts, painting, and surface finishing.
  • Execute precision hand assembly of tiny and compact electro-mechanical prototypes—including sub-centimeter enclosures, press fits, threaded fasteners, and delicate component integration.
  • Build and maintain jigs, fixtures, and test rigs used in prototype assembly and validation.
  • Read and interpret mechanical drawings, GD&T callouts, and 3D CAD models to execute fabrication tasks with minimal supervision.

Requirements

  • 5+ years of hands-on experience in mechanical fabrication, prototyping, or a related role in consumer electronics, robotics, or hardware development.
  • Demonstrated skill in commissioning and maintaining benchtop fabrication equipment (3D printers, CNC, laser cutters).
  • Strong hand-tool proficiency and precision assembly skills—comfortable working with small parts, tight tolerances, and delicate components.
  • Ability to read and work from mechanical drawings, GD&T callouts, and 3D models.
  • Strong understanding of common engineering materials: plastics (ABS, PC, nylon), metals (aluminum, steel, brass), adhesives, and fasteners.
  • Highly organized with exceptional attention to detail and a commitment to a clean, well-maintained lab.
  • Dependable, safety-conscious, and able to prioritize and manage multiple concurrent tasks.
  • Strong verbal and written communication skills.

Preferred Qualifications

  • Previous experience at a startup or early-stage hardware company.
  • Familiarity with MCAD tools (SolidWorks, Fusion 360) for viewing and measuring models.
  • Experience with soft goods, textiles, or composite materials.
  • Comfort with basic electrical assembly: connectors, cable harnesses, simple soldering.
  • Exposure to metrology tools: calipers, micrometers, height gauges, optical comparators.

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