Commonwealth Fusion Systems

Develops high-temperature superconducting fusion magnets

Equipment Technician

Equipment MaintenanceConfirmed live in the last 24 hours

Full-timeMilpitas, CA, USA

About the Job

Requirements

At least 5 years of hands-on experience supporting semiconductor, research and development, or manufacturing equipment.
Strong background in high-vacuum or ultra-high-vacuum systems, including chamber assembly, component cleaning, and leak testing.
Experience operating or maintaining thin-film deposition tools such as sputtering or evaporation systems.
Skill in servicing and refurbishing scroll, turbo, or cryogenic vacuum pumps.
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 diagnostic equipment.
Understanding of safety protocols, including Occupational Safety and Health Administration requirements, lockout/tagout, and personal protective equipment, in laboratory environments.
Ability to occasionally lift up to 50 pounds.
Ability to stoop, climb, stand, or sit for extended periods.
Willingness to travel or work nights, weekends, or on-call occasionally.
Dedication to mitigating industrial hazards that may include heat, cold, noise, fumes, strong magnets, lead, high voltage, and cryogenics.

Responsibilities

Assemble, operate, and maintain custom equipment used in the high-temperature superconducting and characterization laboratory.
Perform mechanical and electrical troubleshooting across vacuum, thermal, and instrumentation systems.
Support equipment integration, testing, and commissioning 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 multimeters, vacuum gauges, residual gas analyzers, and other diagnostic tools to troubleshoot systems and support data collection.
Maintain infrastructure and documentation, and comply with safety protocols, standard operating procedures, and industry standards including SEMI and OSHA.
Contribute to laboratory cleanliness, organization, and continuous process improvements.

Desired Qualifications

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, including computerized maintenance management systems and laboratory management software.
Basic computer-aided design skills for reviewing and modifying mechanical and electrical designs.

Salary Range: 35 to 63 (Currency: USD) (Pay period: per-hour-wage)

About Commonwealth Fusion Systems:

Commonwealth Fusion Systems is on a mission to deliver the urgent transition to fusion energy.

Combining decades of research, top talent, and new technologies, we’re designing and building commercially viable fusion power plants. And we're working with policymakers, suppliers, and many others to build the energy industry of the future.

We’re in the best position to make it happen. Since 2018, we’ve raised $4 billion of capital, making us the largest and leading fusion company in the world.

Now we’re looking for more thinkers, doers, builders, and makers to join us. People who’ll bring new perspectives, solve tough problems, and thrive as part of a team.

If that’s you and this role fits, we want to hear from you.

Join the power movement as an Equipment Technician

We are 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.

Work: Sun, Mon, Tues + every other Wed OR every other Wed + Thu, Fri, Sat

First shift hours - 6:30 am - 6:45 pm

Second shift hours - 6:30 pm - 6:45 am

Rate of pay: $35 - $65

**Second Shift Differential - 15%

What you'll do:

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

What we’re looking for:

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

Bonus points for:

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

Must-have Requirements:

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

#LI-Onsite

#CFS-NE

At CFS, we excel in fast-paced environments, driven by our values of integrity, execution, impact, and self-critique. As we grow, we’re eager to bring on mission-driven folks who offer diverse perspectives and fresh ways to tackle challenges.

We value diversity deeply and are proud to be an equal opportunity employer by choice. We consider all qualified applicants equally, regardless of race, color, national origin, ancestry, citizenship status, protected veteran status, religion, physical or mental disability, marital status, sex, sexual orientation, gender identity or expression, age, or any other basis protected by law.

This role requires compliance with U.S. laws concerning the export of controlled or protected technologies or information (collectively, “Export Control Laws"). Any offer of employment will be contingent on the need for compliance with such Export Control Laws.

About the Company

Commonwealth Fusion Systems

Develops high-temperature superconducting fusion magnets

Commonwealth Fusion Systems builds fusion energy systems that aim to provide clean, affordable power. It designs tokamaks using high-temperature superconducting magnets to make smaller, less expensive machines. Its flagship SPARC is intended to produce net energy, with ARC envisioned as the first commercial fusion power plant. The company collaborates with MIT and focuses on a data-driven, mission-focused path to scalable fusion energy for large energy users.

Company size: 1,001-5,000
Company stage: Grant
Total funding: $4B
Headquarters: Harvard, MA
Founded: 2018

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