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Facility System Engineer

Mid-Senior Level | Full-time
Engineering | livermore, CA | 04/30/2024

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Company Description

Join us and make YOUR mark on the World!

Are you interested in joining some of the brightest talent in the world to strengthen the United States’ security? Come join Lawrence Livermore National Laboratory (LLNL) where our employees apply their expertise to create solutions for BIG ideas that make our world a better place.

We are committed to a diverse and equitable workforce with an inclusive culture that values and celebrates the diversity of our people, talents, ideas, experiences, and perspectives. This is important for continued success of the Laboratory’s mission.

Pay Range

$142,050 - $182,388 Annually


$142,050 - $182,388 Annually for the TSS.3 level

$170,430 - $218,868 Annually for the TSS.4 level

Please note that the pay range information is a general guideline only. Many factors are taken into consideration when setting starting pay including education, experience, the external labor market, and internal equity.

Job Description

We have multiple openings for Facility System Engineers to apply advanced knowledge in support of ongoing operations and modifications in DOE Hazard Category 2 and 3 nuclear facilities. You will apply advanced technical knowledge in the mechanical engineering area to maintain the assigned mechanical systems. These systems include containment ventilation, cryogenic liquids and compressed gases, gloveboxes, and fire suppression systems. These positions are in the Strategic Deterrence (SD) Directorate.

These positions will be filled at either level based on knowledge and related experience as assessed by the hiring team. Additional job responsibilities (outlined below) will be assigned if hired at the higher level.

In this role you will

  • Monitor the operational status of assigned systems to anticipate the need for maintenance, repair, or replacement of structures, systems, and components (SSCs) due to aging.
  • Provide engineering technical support for the troubleshooting, repair, modification, and operation of assigned systems.
  • Apply engineering experience, knowledge, and judgment to successfully resolve complex mechanical system problems and issues.
  • Apply the principles of configuration control, revise and develop design and other documentation for proposed solutions.
  • Identify, monitor, and provide recommendations for the timely procurement and assurance of adequate inventory of spare parts for assigned systems.
  • Develop and review of facility/system related procedures and work instructions to ensure technical adequacy and ease of implementation.
  • Conduct reviews and provide advice to mid-level internal management, customers, and colleagues on system-related design, operation, and maintenance issues.
  • Prepare detailed assessment reports for facility management on the results.
  • Recognize and support plans to promote and foster a culture of inclusion, diversity, equity, and accountability within the workplace.
  • Perform other duties as assigned.

Additional job responsibilities at the TSS.4 level

  • Lead others in the development of solutions and approaches to maintain the operability of assigned systems, including troubleshooting, repair, modification, and operation.
  • Develop and deliver technical presentations to programmatic clients, SD senior management, and DOE/NNSA Livermore Field Office / Headquarters, plus be able to field any associated questions.
  • Represent the organization as a technical resource and provide subject matter expertise in the design, maintenance, and operation of ventilation, compressed gas, gloveboxes, and fire suppression systems.
  • Provide mentorship for early career engineers to facilitate knowledge transfer and to foster a collaborative environment.


  • Ability to secure and maintain a U.S. DOE Q-level security clearance which requires U.S. citizenship.
  • Bachelor’s degree in Mechanical Engineering or equivalent level of education, and related technical experience.
  • In-depth knowledge of engineering standards, codes, and practices related to facility-related mechanical systems.
  • Significant experience in the design, operation, troubleshooting, or maintenance of facility mechanical systems, that may include ventilation, filtration, compressed gas, fire suppression, or piping systems.
  • In depth knowledge of and significant experience in developing or reviewing calculations and specifications, drawings, and sketches, and determining design criteria for facility mechanical systems, modifications, renovations, and upgrades on small projects and on occasional larger projects.
  • Ability to identify, develop and effectively communicate recommendations to facility and senior management regarding facility and safety equipment modifications with proven record of ability to implement recommendations.
  • Significant experience developing work process and troubleshooting documents and safety documentation.
  • Experience working in a multi-disciplinary team environment which includes scientists, engineers, and technicians.
  • Advanced verbal and written communication skills necessary to effectively collaborate in a team environment.
  • A positive attitude, work well in teams with colleagues from a variety of professional backgrounds and a willingness to ask questions in uncertain circumstances with a demonstrated ability/commitment to valuing diversity, equity, and inclusion principles in the workplace.

Additional qualifications at the TSS.4 level

  • Independent thinking and the ability to understand technical documentation needed for solving problems are essential.
  • Substantial experience and subject matter expertise in facility mechanical engineering and nuclear industry code compliance.
  • Experience in developing and coaching entry level engineers.
  • Expert communication, facilitation, and collaboration skills necessary to effectively present, explain, and advise senior management, reviewers, and stakeholders.

Qualifications We Desire

  • Professional Engineering Registration in Mechanical Engineering in California or reciprocity from another state within twelve months.
  • Significant experience working with facility mechanical systems in a nuclear facility.
  • Demonstrated ability/commitment to promote and value inclusion, diversity, equity, and accountability principles in the workplace.

Additional Information

All your information will be kept confidential according to EEO guidelines.

Position Information

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

Why Lawrence Livermore National Laboratory?

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. 

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.

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.

We invite you to review the Equal Employment Opportunity posters which include EEO is the Law and Pay Transparency Nondiscrimination Provision.

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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