Senior Mechanical Design Engineer

Inertia
Livermore$150k – $180kPosted 13 March 2026

Job Description

Senior Mechanical Design Engineer Overview: We are seeking a Senior Mechanical Design Engineer within the laser division, to play a key role in developing the next generation of ultra-high energy pulsed laser systems for fusion energy. Typical design projects would include the design and development of solid-state laser hardware and systems, large-aperture opto-mechanical mounts and positioning systems, support structures, vacuum chambers and systems, thermal management systems, and test stands and diagnostics. PRIMARY RESPONSIBILITIES: - Gather and develop requirements for systems with stakeholders across all disciplines - Conceptualize system architectures and concepts based on high-level requirements - Lead small teams in the design of precision mechanical and opto-mechanical equipment and systems for IFE facilities - Design mechanical, opto-mechanical, and electro-mechanical equipment and systems - Validate design work with appropriate analysis (static and modal FEA, hand calculations, etc.) - Present at design reviews to science and management stakeholders - Work closely with other disciplines in the design and coordination of activities - Integrate precision opto-mechanical, fluidic, and electrical hardware, designed both in-house and by subcontractors, into large-scale CAD assemblies that include facility BIM data - Perform detailed component materials and finish specifications, manage technical data transfer to suppliers, inspect and qualify hardware following procurement - Assemble prototype hardware; develop and execute test plans for subsystem performance validation - Utilize large-scale CAD assemblies to provide assembly documentation and installation schedules for opto-mechanical and electrical systems - Guide and mentor other engineers REQUIRED QUALIFICATIONS: - 10+ years of experience as a mechanical design engineer - Proven history of delivering novel and innovative solutions to challenging problems - Proficiency with 3D CAD packages; SolidWorks (preferred), CREO, Autodesk Inventor, etc. - Thorough knowledge of drafting, tolerance analysis, and Geometric Dimensioning and Tolerancing (GD&T) - Demonstrated experience with FEA - Structural, Modal, Random Vibration with empirical validation - Experience with CFD analysis with empirical validation (preferred) - Practical knowledge of manufacturing processes (machining, sheet metal, welding) and design for manufacturability (DFM) - Experience specifying components for precision design: linear stages, rotary motors, encoders, optical sensors, pneumatic components, vacuum components, etc. - Full design lifecycle experience including design, procurement, assembly, and test of mechanical systems - Experience with cleanroom procedures, high-voltage, and high-vacuum environments - Experience designing laser systems or optical instruments - Experience with Product Data Management Systems; SolidWorks PDM (preferred) - Applicants should be able to work both autonomously as well as collaboratively to execute tasks in support of various teams within the company - Due to the nature of this position, applicants must be U.S. citizens or permanent residents. SALARY & BENEFITS: - The base salary range for this role is $150,000 - $180,000 per year; The pay range provided is an estimated base range for this role. Exact compensation may vary based on skills, experience, and education. - We offer market-competitive compensation and an excellent benefits program, including Medical, Dental, and Vision plans, company-paid holidays, matching 401k, and more! About Inertia: Inertia is taking the most direct, scientifically-proven path to commercializing fusion, leveraging the only successful achievement of fusion ignition, using a process that was pioneered at the U.S. Department of Energy’s (DOE) Lawrence Livermore National Laboratory (LLNL). With groundbreaking innovation, transformative technology, and multi-year investment, Inertia is committed to commer ... (truncated, view full listing at source)
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