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Mechanical Design Engineer

Mid-Senior Level | Full-time
Engineering | livermore, CA | 05/16/2023

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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

  • $ $94,770 - $121,716 Annual (TSS.1)
  • $ $113,730 - $146,076 Annual (TSS.2)

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 an opening for a Mechanical Design & Controls Engineer. You will provide mechanical engineering analysis and design support for buildings and high-performance computing systems.  This position is within the Project Management Office (PMO) and may be matrixed to the Livermore Computing Directorate.

This position will be filled at either the TSS.1 or TSS.2 level depending on your qualifications. Additional job responsibilities (outlined below) will be assigned if you are selected at the higher level.

In this role, you will

  • Provide engineering analysis and design in support of projects being performed to improve mechanical systems in High Performance Computing and Data Center buildings.
  • Provide engineering support to other design team members by collecting and organizing data required during the design process.
  • Prepare mechanical construction drawings and specifications.
  • Review and approve construction submittals and observe construction field activities and installations.
  • Coordinating critical systems outages in a 24/7 operating data center.
  • Assist with mechanical equipment and systems retro-commissioning/commissioning.
  • Perform other duties as assigned.

In Addition at the TSS.2 Level

  • Contribute to the development of detailed mechanical engineering designs and construction packages.
  • Provide mechanical engineering solutions for a diverse range of moderately complex data center systems.
  • Develop approaches to solve moderately complex technical issues using independent judgement and analysis.


  • Ability to secure and maintain a U.S. DOE Q-level security clearance which requires U.S. citizenship.
  • Bachelors degree in Mechanical Engineering or other relevant engineering discipline, or the equivalent combination of education and previous relevant experience.
  • Knowledge of fundamental concepts, techniques, practices, and procedures for completing tasks or projects in mechanical engineering; knowledge is expected to be largely based on academic background.
  • Knowledge of water cooling and distribution for data centers.
  • Sufficient computer skills, including word processing and programs such as Microsoft Word, Excel, and PowerPoint.
  • Knowledge of operating and managing Building Management Systems (BMS).
  • Demonstrated interpersonal skills and the ability to provide high level customer service.
  • Sufficient verbal and written communication skills necessary to collaborate effectively in a team environment and present and explain technical information.

In Addition at the TSS.2 Level

  • Comprehensive knowledge of concepts, techniques, practices, and procedures for completing tasks or projects in mechanical engineering.
  • Demonstrated proficient verbal and written communication skills necessary to effectively collaborate in a team environment and present and explain technical information.
  • Registration as a Professional Mechanical Engineer in the State of California or reciprocity from another state within 24 months, and relevant previous experience performing independent work.

Qualifications We Desire

  • Membership in professional organizations such as American Society of Mechanical Engineers (ASME).
  • Knowledge of the California Building Codes.
  • Ability to use AutoCAD or Revit to prepare design drawings.
  • Ability to use Computational Fluid Dynamics software to model data center airflow.

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.

Beware of Fraudulent Job Postings. LLNL’s hiring practices:

  • Never requires job applicants to pay an application/training fee or submit personal documents like bank account details, passport number, Social Security number, tax forms or credit card information as part of the application process. 
  • For interviews and to be granted access to a Federal facility, a LLNL employee will contact you directly to collect visa, passport number, and/or Social Security number.  To vet the authenticity of the employee please have them provide you their name and phone number and verify at
  • Involves at least one interview (virtual or in-person) and never interviews job applicants through chat platforms such as Google Hangouts, or via correspondence through text and instant messaging systems.
  • Only sends email communications to job applicants from domain “” or via their applicant tracking system, [email protected]. Occasionally LLNL uses third-party vendors that will contact you about job opportunities.  If a recruiter contacts you to apply, you will always be directed to our career page to apply through our career site.
  • Encourages all applicants to visit LLNL’s careers page at if they saw the job posting on another site prior to applying to ensure the job posting is accurate and valid.

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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