Lead Mechanical Engineer

Lumicity; California (MO); On-site; USD 140,000 - 190,000; Full time

Job summary

Lumicity is seeking a Principal Mechanical Engineer to lead development of advanced hardware, focusing on vacuum systems and precision assemblies. You will translate concepts into prototypes and manage integration across CAD, analysis, and fabrication teams.

The role requires hands-on design work, strong CAD/FEA skills, and experience with high-precision hardware in engineering environments. On-site work and secure facilities experience are advantageous.

Qualifications

• 7+ years of mechanical engineering experience.
• Hands-on experience with vacuum systems or precision mechanical hardware.
• Strong 3D CAD skills using SolidWorks, Creo, NX, or similar.
• Experience with FEA, structural, or thermal analysis.

Responsibilities

• Develop complex, high-precision hardware from concept through prototype and testing.
• Interpret existing engineering documentation and update CAD models/drawings.
• Collaborate with fabrication partners and suppliers for assembly and testing.
• Turn designs into functional prototype hardware and drive design improvements.

Skills

Vacuum systems

Precision hardware

3D CAD

FEA/analysis

Team collaboration

Tools

SolidWorks

Creo

NX

Job description

An advanced technology company is seeking a Principal Mechanical Engineer to develop complex, high-precision hardware from early concepts through prototype and testing. This position will focus heavily on vacuum systems, precision mechanical assemblies, and hardware integration.

This engineer will work with an experienced technical team to interpret existing engineering documentation, develop updated CAD models and drawings, perform structural and thermal analysis, and turn designs into functional prototype hardware. You'll also work directly with fabrication partners and suppliers while supporting assembly, testing, and design improvements.

What You'll Bring:

• 7+ years of mechanical engineering experience
• Hands-on experience with vacuum systems and/or precision mechanical hardware
• Strong 3D CAD skills using SolidWorks, Creo, NX, or similar
• Experience with FEA, structural, or thermal analysis
• Background in aerospace, defense, nuclear, semiconductor, scientific equipment, fusion, or other highly engineered hardware is a plus
• Familiarity with specialized materials, fabrication processes, or high-temperature environments is beneficial
• Active or recently held DOE Q or DOD Top Secret clearance
• U.S. Person
• Ability to work on-site

This is a hands-on design role suited for an engineer who enjoys working at the intersection of CAD, analysis, fabrication, and physical hardware. Experience designing vacuum equipment, semiconductor tools, accelerator hardware, aerospace systems, or other precision mechanical equipment would translate particularly well.