Maintenance Mechanic

Basic skills, knowledge, and abilities in maintenance mechanic tasks including journey-level machine shop experience.

Basic knowledge and experience operating and maintaining a wide variety of mechanical and electrical equipment such as pumps, valves, and flow controls associated with heating, air conditioners, water supply, sewage treatment, and related operating systems and utilities.

Experience using hand tools and power tools of the trade such as grinders, torque wrenches, micrometers, pneumatic tools, presses, and shears. Working knowledge of related trades such as HVAC, plumbing, electrical, and millwright.

Effective customer service and communication skills to interact with personnel at all levels and across multidisciplinary teams.

#LI-Onsite

Position Information

This is a Career Indefinite position, open to Lab employees and external candidates.

Why Lawrence Livermore National Laboratory?

Included in 2026 Best Places to Work by Glassdoor!

Flexible

We have an opening for a Maintenance Mechanic.

You will operate and maintain a wide variety of mechanical and electrical equipment, such as pumps, valves, and flow controls associated with the heating, air conditioning, water supply, sewage treatment, and related operating systems and utilities of LLNL's plant and research facilities.

Operate and maintain a wide variety of site-wide mechanical and electrical equipment using materials, power tools, and hand tools applicable to the trade.

Maintain and operate equipment in conjunction with underground utilities distribution systems, which include natural gas systems, centralized compressed air system, sewer collection system, and water (city, low conductivity, and demineralized).

Maintain, operate, and repair water pumps, vacuum pumps, LN2 dewars, air compressors, valves, and other plant equipment.

Operate specialized mechanical systems and devices (e.g., operate high-pressure steam boiler), take corrective measures in the event of malfunctions within specified time according to State codes.

Join us and make YOUR mark on the World!

Lawrence Livermore National Laboratory (LLNL) has turned bold ideas into world-changing impact advancing science and technology to strengthen U.S. security and promote global stability.

Our mission spans four critical national security areas nuclear deterrence, threat preparedness, energy security, and multi-domain defense empowering teams to take on the toughest challenges of today and tomorrow. With a culture built on innovation and operational excellence, LLNL is a place where your expertise can make a real impact.