Boiler & Pressure System Mechanic II

Boiler & Pressure System Mechanic II

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.

We have multiple openings for a Boiler & Pressure Systems Mechanic II. You will install, operate, maintain, and repair a combination of packaged boilers and pressure systems associated with building heating HVAC (heating hot water and low-pressure steam), process steam, related operating systems, and utilities of LLNL plant and research facilities. You will work independently and interact as a member of a multi-disciplinary team. This position is in the Infrastructure Maintenance and Utilities Department.

This position requires full-time on-site presence due to the nature of the work.

You will:

• Perform journey-level boiler technician work including troubleshooting, installation, operations/operator, and maintenance and repair of hot water boilers, low-pressure steam boilers, thermal fluid systems, medium pressure steam generating equipment (including ASME Section l steam boilers), Low NOx burners, and related systems and components; to include combustion tuning, Burner Management System programming, and steam boiler water treatment testing.
• Install, operate, maintain, and repair a wide variety of mechanical and electrical equipment using materials, power tools, hand tools, and specialty tools applicable to the trade.
• Provide effective customer service and communication necessary to interact effectively with a multi-disciplinary team, including peers, supervisors, customers, ES&H (Environmental, Safety, and Health) technicians, and other crafts personnel.
• Analyze complex data and prepare logs (boiler and water treatment), standard reports, permit requirements, deficiency forms, and preventive maintenance work requests.
• Use a computer and hand-held electronic device for completing daily work orders, time reporting and web-based training.
• Work scheduled and emergency overtime.
• Perform all assignments in accordance with ES&H, security, and business practice requirements and policies.
• Perform other duties as assigned.

Pay Range $50.47 - $61.34 Hourly This position is under a Collective Bargaining Agreement and step structure. Step placement will be determined after your qualifications are fully assessed during the interview process.

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

Included in 2026 Best Places to Work by Glassdoor!

Flexible Benefits Package

401(k)

Relocation Assistance

Education Reimbursement Program

Flexible schedules (*depending on project needs)

Our values - visit

Site 300 is an experimental test site operated by LLNL. Situated on 7,000 acres in rural foothills approximately six miles southwest of downtown Tracy and 15 miles southeast of Livermore, Site 300 hosts approximately 200 employees with expertise in such fields as engineering, chemistry, biology, and environmental restoration. Employees assigned to work at Site 300 may be exposed to the organism that causes San Joaquin Valley Fever (coccidioidomycosis).

This position requires a Department of Energy (DOE) Q-level clearance. If you are selected, we will initiate a Federal background investigation to determine if you meet eligibility requirements for access to classified information or matter. Also, all L or Q cleared employees are subject to random drug testing. Q-level clearance requires U.S. citizenship.

The Laboratory performs a variety of work, including some that may fall under Davis Bacon Act requirements. When work scope falls under this Act, the Laboratory complies with the prevailing wage requirements.

External applicant(s) selected for this position must pass a post-offer, pre-employment drug test. This includes testing for use of marijuana as Federal Law applies to us as a Federal Contractor.

Per the Department of Energy (DOE), Lawrence Livermore National Laboratory must meet certain restrictions with the use and/or possession of mobile devices in Limited Areas. Depending on your job duties, you may be required to work in a Limited Area where you are not permitted to have a personal and/or laboratory mobile device in your possession. This includes, but not limited to cell phones, tablets, fitness devices, wireless headphones, and other Bluetooth/wireless enabled devices.

If you use a medical device, which pairs with a mobile device, you must still follow the rules concerning the mobile device in individual sections within Limited Areas. Sensitive Compartmented Information Facilities require separate approval. Hearing aids without wireless capabilities or wireless that has been disabled are allowed in Limited Areas, Secure Space and Transit/Buffer Space within buildings.

A job related pre-placement medical examination may be required.

Please be aware of recruitment scams where people or entities are misusing the name of Lawrence Livermore National Laboratory (LLNL) to post fake job advertisements. LLNL never extends an offer without a personal interview and will never charge a fee for joining our company. All current job openings are displayed on the Career Page under "Find Your Job" of our website. If you have encountered a job posting or have been approached with a job offer that you suspect may be fraudulent, we strongly recommend you do not respond.

To learn more about recruitment scams:

We are an equal opportunity employer that is committed to providing all with a work environment free of discrimination and harassment. All qualified applicants will receive consideration for employment without regard to race, color, religion, marital status, national origin, ancestry, sex, sexual orientation, gender identity, disability, medical condition, pregnancy, protected veteran status, age, citizenship, or any other characteristic protected by applicable laws.

Our goal is to create an accessible and inclusive experience for all candidates applying and interviewing at the Laboratory. If you need a reasonable accommodation during the application or the recruiting process, please use our online form to submit a request.

The California Consumer Privacy Act (CCPA) grants privacy rights to all California residents. The law also entitles job applicants, employees, and non-employee workers to be notified of what personal information LLNL collects and for what purpose. The Employee Privacy Notice can be accessed here.