Plumber/Pipefitter

Company Description

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.

Job Description

We're looking for a Plumber/Pipefitter to perform a wide variety of journey-level plumber/pipefitter activities including layout, fabrication, installation, and repair of plant piping systems designed to transport a variety of liquid and gaseous substances. You will provide minor modifications, alterations, and maintenance services including service plumbing to all Superblock facilities and utilities. This position is in the Maintenance Production Division within the Infrastructure Maintenance and Utilities Department and may require work at Site 300 which is located in Tracy, California.

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

You will

• Layout, fabricate, install, repair, and troubleshoot commercial and industrial piping and equipment; leak detection; line locating, and testing of piping systems. Experience reading and working from system drawings and using tools and equipment of the plumber/pipefitter trade.
• Assemble and secure pipes, tubes, fittings, and related equipment, according to specifications, by welding, brazing, cementing, soldering, and threading joints.
• Repair and install underground mechanical utilities (city water, sewer, etc.).
• Make decisions jointly with coworkers that involve techniques, guidelines, and procedures that are well defined.
• Provide effective customer service, interacting with administrative, supervisory, and craft personnel.
• Prepare standard reports including permits, deficiency forms, and preventative maintenance work requests.
• Perform work planning and control activities including job planning, hazard reviews, lockout/tag out, and use of required personal protective equipment, respiratory protection, and radiation protection.
• Use motor vehicles in the transport of materials throughout the facility.
• Perform other duties as assigned.

Qualifications

• Ability to secure and maintain a U.S. DOE Q-level security clearance which requires U.S. citizenship.
• High school diploma, GED, or equivalent combination of education and experience, and completion of an apprenticeship training program and/or basic journey level skills, knowledge and experience in the field of service repair rough-in, top out and finish plumbing utilizing tools and equipment of the trade.
• Basic journey-level skills, knowledge and experience installing, maintaining, diagnosing, and repairing plumbing systems, piping, fixtures, valves, drains, pumps, and related components within a commercial, industrial, high hazard, or nuclear facility.
• Knowledge and experience using measuring instruments, glue, solvents, and adhesives. and installation and repair of underground sanitary sewer systems.
• Ability to use independent judgment and decision-making to provide best method to complete the task within well-defined guidelines.
• Effective customer service and interpersonal skills necessary to interact effectively in writing and verbally with technical, administrative, and management personnel and work effectively independently or as a part of a team.
• Basic knowledge of computers and associated software to complete timekeeping, emails, computer-based training logs reports, maintenance records, and project closeout documentation, including the ability to interpret related technical documents.
• Ability to apply Environmental, Safety, & Health laws and regulations; and complete required training, including hazard reviews and lockout/tagout procedures.
• Ability to wear required respiratory protection and perform work within a nuclear environment while following radiation protection and contamination control procedural requirements.
• Prepare standard reports including permits, equipment inventory reports, deficiency forms, and preventative maintenance work requests.
• Valid California driver's license.

Qualifications We Desire

• Experience supporting facility systems in operational and construction environments, including installation, modifications, and upgrade activities.
• Current certification in pipe welding.
• Current certification in high-pressure installation.
• In-depth understanding and knowledge of the Uniform Plumbing Code Book.
• Ability to interpret drawings and technical documents, including plans, isometrics, specifications, and equipment manuals.

Pay Range
$45.74 - $55.60 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.

Additional Information

#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 Benefits Package
• 401(k)
• Relocation Assistance
• Education Reimbursement Program
• Flexible schedules (*depending on project needs)
• Our values - visit

Site 300

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).

Security Clearance

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.


Davis Bacon Act

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.

Pre-Employment Drug Test

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.

Wireless and Medical Devices

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.

Pre-Placement Medical Exam

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

How to identify fake job advertisements

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:

Equal Employment Opportunity

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.

Reasonable Accommodation

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.


California Privacy Notice

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.

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