Heavy Equipment Mechanic

Lawrence Livermore National Laboratory; Livermore (CA); On-site; USD 63,000 - 77,000; Full time

Benefits offered by this job

Relocation Assistance

Education Reimbursement Program

401(k)

Flexible schedules

Job summary

Lawrence Livermore National Laboratory in California seeks a Heavy Equipment Mechanic to repair and maintain engines, hydraulics, HVAC systems, generators, and construction equipment across plant support operations. The role primarily stays on-site and may include work at Site 300 in Tracy.

Applicants must be U.S. citizens with a DOE Q-level clearance, a high school diploma or GED, and journey-level heavy equipment experience or completion of an apprenticeship.

Qualifications

• Security clearance required (DOE Q) and U.S. citizenship.
• High School Diploma or GED or equivalent.
• Completion of an apprenticeship or journey-level heavy equipment experience.
• Knowledge of safety policies and regulations.
• Experience with loaders, backhoes, cranes, generators and compressors.

Responsibilities

• Operate and maintain a wide range of mechanical and electrical equipment.
• Repair air ventilation, hydraulics, generators, compressors, engines and construction gear.
• Maintain knowledge of plant equipment and safety procedures.
• Complete reports, work orders and timekeeping using computer/mobile devices.
• Occasional travel to Site 300 as required.

Skills

Security clearance

Journeyman heavy equipment mechanic

Hydraulic & pneumatic systems

Troubleshooting & repair

Report writing & forms

Valid driver's license

Education

High School Diploma / GED

Job description

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

Relisted position. Originally listed on 3/12/2026. Previous candidates need not reapply.

We have openings for a Heavy Equipment Mechanic. You will perform journey-level duties to repair and maintain a wide variety of mechanical/electrical plant support equipment such as engines, motors, pneumatics, hydraulic systems, air ventilation equipment, emergency generators, power gates, construction equipment, e.g. loaders, backhoes, aerial lifts, mobile cranes, and compressors.This position is in the Infrastructure Maintenance and Utilities Department and may require work at Site 300 in Tracy, California.

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

You will

• Be responsible for site-wide operation and maintenance of a wide variety of mechanical and electrical equipment using standard tools of heavy equipment mechanic trade.
• Repair and maintain air ventilation systems, power gates, hydraulics systems, stationary and portable generators, compressors, engines, and construction equipment.
• Maintain good working knowledge of all plant and programmatic equipment in assigned work areas.
• Perform tasks in accordance with ES&H regulations and procedures, fulfill all integrated safety, security, and property management responsibilities as appropriate.
• Complete maintenance tasks and make decisions that involve techniques and procedures that are well defined.
• Interact with supervisors, building coordinators, ES&H technicians, inspectors, and other craft personnel.
• Prepare standard reports and complete safety forms, work orders, training, and timekeeping utilizing a computer and mobile devices.
• 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/or experience.
• Completion of apprentice training program and/or equivalent journey-level work experience as a heavy equipment mechanic.
• Journey level, skills, knowledge, and abilities in the heavy equipment mechanic trade including knowledge of codes, laws and regulations including basic skills in the application of Safety policies and regulations.
• Experience troubleshooting, repairing, and maintaining loaders, backhoes, aerial lifts, mobile cranes, stationary and portable generators, and compressors.
• Experience with hydraulic and pneumatic systems and industrial ventilation (HVAC) maintenance and repair.
• Demonstrated effective customer service, interpersonal, and communication skills necessary to interact effectively with personnel of all levels.
• Demonstrated ability to effectively write reports and complete forms.Basic knowledge of computers and mobile devices for preparing reports, work orders and completing forms, training, and timekeeping.
• Ability to work scheduled as well as emergency overtime work and weekends, travel to Site 300.
• Valid California Driver's License and ability to obtain and maintain a Commercial Driver's License.

Qualifications We Desire

• Experience with modern predictive and preventive maintenance techniques.
• Experience and knowledge of vibration analysis.

Pay Range

$45.82 - $55.70 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.

#LI-Onsite

Position Information

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

Why Lawrence Livermore National Laboratory?

• Included in 2026Best Places to Work by Glassdoor!
• FlexibleBenefits Package
• 401(k)
• Relocation Assistance
• Education Reimbursement Program
• Flexible schedules (*depending on project needs)
• Our values - visithttps://www.llnl.gov/inclusion/our-values

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, wewill initiate a Federal background investigation to determine if youmeet 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 useand/or possession ofmobile devices in Limited Areas. Depending on your job duties, you may be required to work in a Limited Area whereyou are not permitted to have a personal and/or laboratory mobile devicein your possession. This includes, but not limited to cell phones, tablets, fitness devices, wireless headphones, and other Bluetooth/wireless enabled devices.

Ifyou useamedical device, whichpairs with a mobile device,you must still follow the rules concerningthe mobile device in individual sections within Limited Areas.

Sensitive Compartmented Information Facilities requireseparate 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:https://www.llnl.gov/sites/www/files/2023-05/LLNL-Job-Fraud-Statement-Updated-4.26.23.pdf

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.

CaliforniaPrivacy Notice

The California Consumer Privacy Act (CCPA) grants privacy rights to all California residents. The law also entitlesjob 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.