Field Mechanical Engineer — Assembly & Build Lead

Commonwealth Fusion; Harvard (MA); On-site; USD 110,000 - 185,000; Full time

Job summary

Commonwealth Fusion Systems seeks a Mechanical Engineer to own the assembly sequence for the Toroidal Field Coil (TF) semicircle sub-assemblies within the SPARC program. You will define work scope, resolve issues, and ensure the sequence aligns with the overall assembly.

This role requires 7+ years of mechanical engineering ownership, CAD experience, and close collaboration with design teams; onsite five days a week during active assembly, with exposure to high-load, vacuum and complex handling.

Qualifications

• Engineering bachelor’s degree in Civil, Mechanical, or Aerospace fields.
• 7+ years of mechanical engineering experience with project ownership.
• 4+ years overseeing construction, manufacturing, or assembly/integration processes.
• 4+ years using CAD software.

Responsibilities

• Own and optimize the assembly sequence for TF coil sub-assemblies.
• Define new work scope including manifolds and magnet sub-assemblies.
• Resolve assembly issues with design teams to meet functional requirements.
• Procure tools and fixtures for upcoming process ports.
• Test and hand off operations to production for repeat use.
• Provide design feedback to SPARC subsystems focusing on manufacturing.

Skills

Mechanical design

Project ownership

Manufacturing process

Problem solving

Education

B.S. Civil/Mechanical/Aerospace Engineering

Tools

Siemens NX

CAD software

Job description

Commonwealth Fusion Systems seeks a Mechanical Engineer to own the assembly sequence for the Toroidal Field Coil (TF) semicircle sub-assemblies within the SPARC program. You will define work scope, resolve issues, and ensure the sequence aligns with the overall assembly.

This role requires 7+ years of mechanical engineering ownership, CAD experience, and close collaboration with design teams; onsite five days a week during active assembly, with exposure to high-load, vacuum and complex handling.