Equipment Technician

Commonwealth Fusion Systems•Milpitas, CA

10d•Onsite

About The Position

Commonwealth Fusion Systems is seeking a skilled, hands-on Equipment Technician to support the build, maintenance, and continuous improvement of advanced semiconductor vacuum equipment. This role will focus on thin-film deposition systems—particularly sputtering and evaporation tools—as well as supporting related infrastructure in the HTS pilot line and characterization lab. You’ll work with complex vacuum systems, thermal processes, instrumentation, and large-scale assemblies in a fast-paced, R&D-driven environment.

Requirements

5+ years of hands-on experience supporting semiconductor, R&D, or manufacturing equipment
Strong background in vacuum systems (HV/UHV) including chamber assembly, component cleaning, and leak testing
Experience operating or maintaining thin-film deposition tools such as sputtering or evaporation systems
Skilled in servicing and refurbishing vacuum pumps (scroll, turbo, cryo)
Working knowledge of low- and high-voltage electrical systems, cable harness fabrication, and system wiring
Ability to troubleshoot electrical and instrumentation systems using bench tools and diagnostics equipment
Understanding of safety protocols including OSHA, LOTO, and PPE use in lab environments
Strong safety-first mindset and attention to detail in high-hazard environments
Ability to occasionally lift up to 50 lbs
Perform activities such as stooping, climbing, standing, or sitting for extended periods of time
Dedication to safety to mitigate industrial hazards that may include heat, cold, noise, fumes, strong magnets, lead (Pb), high voltage, and cryogenics
Willingness to travel or work required nights/weekends/on-call occasionally

Nice To Haves

Experience in pilot-line or production environments with thin-film deposition equipment
Knowledge of cryogenics, thermal control systems, and process gas delivery
Familiarity with SEMI equipment standards and maintenance tracking tools (CMMS, lab management software).
Basic CAD skills for reviewing and modifying mechanical and electrical designs

Responsibilities

Assemble, operate, and maintain custom equipment used in the HTS and characterization lab
Perform mechanical and electrical troubleshooting across vacuum, thermal, and instrumentation systems
Support equipment integration, testing, and commissioning efforts in collaboration with engineers and vendors
Conduct preventive maintenance and servicing of roughing pumps, turbo pumps, cryopumps, and deposition chambers
Perform helium leak detection and support vacuum system upgrades, chamber modifications, and process hardware installations
Fabricate and repair cable harnesses, sensors, and custom fixturing
Use diagnostic tools (multimeters, vacuum gauges, RGA) to troubleshoot systems and support data collection
Maintain infrastructure, documentation, and compliance with safety protocols, SOPs, and industry standards (SEMI, OSHA)
Contribute to lab cleanliness, organization, and continuous process improvements