Senior Optomechanical Engineer

Mid-Senior Level | Full-time
Engineering | Livermore, CA | 06/25/2026
Reference #: REF
8508H
Job Code: SES.
3 Science & Engineering MTS 3 / SES.
4 Science & Engineering MTS 4
Organization: Engineering
Position Type: Career Indefinite
Security Clearance: Anticipated DOE Q clearance (requires U.S. citizenship and a federal background investigation)
Drug Test: Required for external applicant(s) selected for this position (includes testing for use of marijuana)
Medical Exam: Not applicable Apply Now

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.

We have an opening for a Senior Optomechanical Engineer for space applications. You will contribute to the development of next-generation large-aperture space telescopes, optical payloads, and precision optical systems supporting U.S. national security and scientific missions. This role focuses on optomechanical design, precision mechanisms, structural and thermal performance, and integration of optical systems into spacecraft environments. You will collaborate with engineers, scientists, physicists, and external partners to develop innovative optical systems for challenging operational environments.

This position is in the Optomechanical Systems Engineering Group within the National Security Engineering Division (NSED), Engineering Directorate.

This position offers a hybrid schedule, blending in-person and virtual presence. You will have the flexibility to work from home one or more days per week.

This position will be filled at either level based on the candidate's knowledge, skills, 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

• Design and analyze complex precision optomechanical assemblies, structures, mounts, and mechanisms for space-based optical systems.
• Perform optomechanical design of telescope and payload subsystems including mirrors, lenses, mounts, alignment features, and supporting structures.
• Develop analytical and numerical models to evaluate structural, thermal, dynamic, and stability performance.
• Apply precision engineering methodologies including tolerance analysis, error budgeting, thermal stability assessment, kinematic design, and metrology planning.
• Evaluate system performance through integrated optical and mechanical analyses and collaborate with optical engineers to assess design sensitivities.
• Support integration and testing activities including alignment planning, test fixture development, verification planning, and performance assessment.
• Serve as a technical point of contact and communicate technical results through reports, presentations, design reviews, and sponsor interactions.
• Contribute to proposal development, technical planning, and risk reduction activities.
• Perform other duties as assigned.

Additional job responsibilities, at the SES.
4 level

• Lead the development of optomechanical architectures and technical solutions for highly complex optical and spaceflight systems.
• Direct environmental verification and qualification activities including vibration, thermal-vacuum, and performance testing of precision optical hardware.
• Establish technical approaches, influence project direction, and provide technical leadership during design reviews and sponsor engagements.

• Ability to obtain and maintain a U.S. DOE Q-level security clearance, which requires U.S. citizenship.
• Bachelor’s degree in Mechanical Engineering, Optical Engineering, Aerospace Engineering, Applied Physics, or a related field, or the equivalent combination of education and related experience.
• Advanced knowledge of optomechanical engineering…