Mechanical Engineer - Electronics Packaging

The role

You will serve as the Responsible Engineer for the mechanical design and development of hardware supporting reactor electronic systems. This includes designing enclosures, equipment racks, mounting hardware, and structural supports.

What you will do

• Design and develop mechanical hardware for reactor electronic systems.
• Create and maintain 3D CAD models, manufacturing drawings, and bills of materials.
• Perform engineering calculations and analyses to validate structural, thermal, and environmental performance.
• Collaborate with electrical, controls, manufacturing, and test engineers.
• Support prototype fabrication, testing, design verification, and supplier engagement.
• Maintain engineering configuration within the Product Data Management (PDM) system.
• Participate in design reviews throughout the product development lifecycle.

Required qualifications

• Bachelor's degree in Mechanical Engineering, Aerospace Engineering, Nuclear Engineering, or a related engineering discipline.
• 2+ years of professional experience designing and developing mechanical hardware for electronic systems.
• Experience creating 3D CAD models, detailed engineering drawings, and bills of materials (BOMs) for production hardware.
• Ability to perform engineering calculations to size and validate mechanical components and support structures.
• Familiarity with geometric dimensioning and tolerancing (GD&T) and standard manufacturing processes.
• Experience managing engineering documentation, revisions, and product structures within a PDM or PLM system.
• Ability to collaborate effectively with multidisciplinary engineering teams.
• Ability to work long hours and weekends as necessary to support critical milestones.

Nice to have

• Master's degree in Mechanical Engineering, Aerospace Engineering, Nuclear Engineering, or a related engineering discipline.
• Experience designing electronic enclosures, equipment racks, mounting hardware, and structural support assemblies for demanding operating environments.
• Knowledge of electronic packaging principles, including thermal management, vibration isolation, EMI/EMC considerations, nuclear radiation shielding, cable management, and environmental sealing.
• Experience performing structural and thermal analysis using engineering tools such as ANSYS, Femap, COMSOL Multiphysics, or equivalent FEA software.
• Experience designing for manufacturing and assembly (DFMA), including sheet metal, machined, welded, and fabricated components.
• Experience managing CAD models, engineering drawings, and product structures within a PDM or PLM system.
• Experience in the nuclear, aerospace, defense, robotics, or other highly regulated or high-reliability industries.

Before you apply

• Applicant must be a U.S. citizen or national, U.S. lawful permanent resident, Refugee, or Asylee, or be eligible to obtain required authorizations from the U.S. Department of State.

About the company

Antares is building mass-producible, inherently safe, deployable microreactors for terrestrial, underwater, and space use. The team hails from organizations including SpaceX, the White House, the Pentagon, and various National Laboratories.