Senior Field Mechanical Engineer - Assembly (Fusion Energy)

Location: Devens, Massachusetts, United States; on-site five days per week during active assembly operations. Second-shift focus, generally 3:00 pm–1:00 am, with start times ranging from 3:00 pm to 7:00 pm.

Salary: $110,000–$185,000 per year, plus 10% shift differential, equity, and benefits.

Company

hirify.global is developing commercially viable fusion power plants and building the SPARC tokamak.

What you will do

• Own complex assembly work-stations and manage the assembly sequence for large magnets, plasma-facing components, and other tokamak structures.
• Provide engineering oversight and hands-on support during assembly, resolving fit, handling, method, and process issues.
• Define and implement solutions with Tokamak System design teams while maintaining functional requirements.
• Proactively procure or design and build tools, fixtures, and manipulation equipment for assembly operations.
• Test, implement, and hand off processes and tools to production technicians for repeatable use.
• Provide manufacturing and assembly feedback in design reviews and support non-conformance resolution and red-line updates.

Requirements

• Bachelor’s degree in Civil, Mechanical, or Aerospace Engineering.
• 7+ years of mechanical engineering experience.
• 4+ years overseeing an active construction, manufacturing, assembly, or integration process.
• 4+ years of experience using CAD software.
• Demonstrated project ownership and ability to collaborate with adjacent subsystem experts.
• Ability to work on-site five days per week and work in an industrial facility with heat, cold, noise, fumes, strong magnets, lead, high voltage, high current, pressure systems, and cryogenics. Ability to occasionally lift up to 50 lbs and perform extended standing, climbing, stooping, sitting, and typing.

Nice to have

• 3+ years of Siemens NX experience.
• Experience with lifting operations, welding, piping and tubing construction, or joining.
• Experience with complex or delicate assemblies, tightly packaged spaces, and fast-paced construction or integration builds.
• Experience designing sizeable alignment and positioning fixtures or manipulating and welding large structures.

Culture & Benefits

• Work in a fast-paced environment focused on integrity, execution, impact, and self-critique.
• 13 company-wide holidays, flexible vacation days, and 10 sick days.
• Generous parental leave and health, dental, and vision insurance.
• 401(k) with employer matching, equity, professional growth opportunities, and team-building activities.