Nuclear Facility Project Mechanical Engineer

We have an opening for a Nuclear Facility Project Mechanical Engineer to provide engineering support for new construction upgrades to facility mechanical systems (i.e. ventilation fire suppression compressed gas piping and pipe supports) design review and modifications to conventional office and laboratory facilities. You will apply advanced technical knowledge in mechanical engineering to develop conceptual ideas into workable and costeffective solutions that maintain facilities supporting research and investigations of nuclear materials. This position is in the Strategic Deterrence Directorate.

This position requires fulltime onsite presence due to the nature of the work.

This position 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.

You will 

• Prepare and implement complex mechanical designs utilizing design criteria calculations schematics sketches construction documents procedures and specifications.
• Utilize advanced technical engineering skills to develop detailed designs drawings calculations bills of materials presentations and work planning documentation to support facility improvement projects including evaluating system capacities planning sequencing of work and ensuring constructability.
• Determine functional mechanical requirements for new or modified specialized equipment and support systems and perform advanced mechanical engineering calculations for ventilation fire protection cryogenic or gas systems chillers or boilers as needed.
• Provide engineering support during construction performed by outside contractors including reviewing submittals and shop drawings responding to contractor questions evaluating change order requests or resolving field problems.
• Lead complex internal mechanical system projects with responsibility for the development and compliance with technical criteria schedules and deliverables and direct the work of mechanical designers and drafters preparing drawings prepared in AutoCAD for projects.
• Participate in design reviews to obtain approvals of project scope and designs.
• Provide technical input to others on complex design requirements and identify and evaluate potential system impacts for projects affecting facility systems while complying with LLNL procedures work control system processes and DOE requirements.
• Perform other duties as assigned.

Additional job responsibilities at the TSS.4 level

• Lead highly complex internal multidisciplinary engineering projects as the Project Lead or Design Manager with overall responsibility for developing technical criteria budgets schedules and deliverables.

Qualifications :

• Ability to secure and maintain a U.S. DOE Qlevel security clearance which requires U.S. citizenship. 
• Bachelors Degree in Mechanical Engineering or equivalent combination of education and related technical experience.
• Significant experience and advanced knowledge in the design for facilityrelated mechanical systems and components such as ventilation systems and associated controls fire protection systems liquid nitrogen or argon systems chilled water systems or boiler systems.
• Significant experience developing mechanical project scope evaluating design options determining design criteria and preparing and reviewing design and construction specifications calculations and drawings that support efficient and successful job completion in industrial facility environments.
• Knowledge and use of applicable codes and industry standards i.e. ASME California Building Code Uniform Building Code ASHRAE.
• Significant experience generating correspondence reports calculations and presentations using Microsoft Word Excel PowerPoint and other applicable software.
• Advanced verbal and written communication skills necessary to effectively interact and collaborate in a team environment and present and explain technical or operational information and provide advice to management reviewers and stakeholders.
• Ability and flexibility to reprioritize and change programmatic direction depending on emergent requests.

Additional qualifications at the TSS.4 level

• Substantial experience and subject matter expertise in facility mechanical engineering and industry code compliance.
• 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 performing design work for mechanical systems in an architectural engineering (AE) consulting environment.
• Significant experience with systems and infrastructure for ventilation systems and the ability to read and develop control system schematics.

Additional Information :

#LIOnsite

Position Information

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

Why Lawrence Livermore National Laboratory

• Included in 2025 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  Clearance

  This position requires a Department of Energy (DOE) Qlevel 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.  Qlevel clearance requires U.S. citizenship. 

  PreEmployment Drug Test

  External applicant(s) selected for this position must pass a postoffer preemployment drug test. This includes testing for use of marijuana as Federal Law applies to us as a Federal Contractor.

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  Remote Work :

  No

  
  

  Employment Type :

  Fulltime