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← Hexium

Senior Mechanical Engineer

Hexium
Location
Livermore, CA
Posted
9 days ago
Department
Technology
What they actually want (must-haves)
  • 6+ years of mechanical engineering experience, including vacuum system design and/or precision mechanical hardware
  • Bachelor's degree in Mechanical Engineering or closely related field
  • Proficiency in 3D CAD (SolidWorks, Creo, or similar)
  • Must currently hold an active DOE Q clearance or active DOD Top Secret clearance, or have held DOE Q / DOD Top Secret clearance within the past 18 months
  • Must be a U.S. Person (required for access to export-controlled technical data)
  • Willingness to work on-site full-time at Lawrence Livermore National Laboratory initially, with required relocation to Hexium's production facility as the program progresses
Nice to have
  • Experience with specialty alloys and refractory metal fabrication
  • Experience with high-temperature vacuum processes
  • FEA/thermal simulation experience
  • Background in safety-critical hardware (aerospace, nuclear, defense)
What the job really is

As a Senior Mechanical Engineer at Hexium, you will lead the modernization of mechanical designs for Atomic Vapor Laser Isotope Separation (AVLIS) technology. Your responsibilities include reviewing legacy designs, creating modern 3D CAD assemblies, and collaborating with scientists to resolve technical challenges. This role will initially be based at Lawrence Livermore National Laboratory and will transition to a Hexium production facility as the program progresses.

Benefits
  • Stock Options
  • Paid Time Off
  • 401(k) Matching
  • Medical, Dental, Vision insurance
  • HSA & FSAs
Things to weigh
  • Role requires relocation to a production facility that is not yet determined
  • On-site work at a DOE national laboratory involves standard security and classified-handling protocols
  • Physical requirements include extended periods of close visual focus and working in confined spaces
Job score3.2/5
Benefits3/5
Freshness5/5
Career value4/5
Role clarity4/5
Pay transparency0/5

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