Senior Mechanical Engineer – Cable Magnets

Location: Devens, Massachusetts, United States; hybrid. The role requires occasional travel, nights, weekends, and on-call support, as well as work in a facility with industrial hazards including heat, cold, noise, fumes, strong magnets, lead, high voltage, high current, pressure systems, and cryogenics.

Salary: $110,000–$185,000 per year, plus equity and benefits. The range applies to new hires across US locations.

Company

hirify.global develops commercially viable fusion power plants and technologies for the fusion energy industry.

What you will do

• Own cable magnet hardware for SPARC, ARC, and other projects from concept through validation, procurement, manufacturing, assembly, and installation.
• Develop and iterate mechanical designs using physics, structural mechanics, and analysis techniques for metallic and composite components.
• Perform thermal, structural, and electromagnetic analysis to validate hardware against requirements.
• Collaborate with R&D, analysis, manufacturing, and procurement teams to deliver program milestones.
• Diagnose production and assembly issues, determine root causes, and implement design solutions.
• Prepare technical specifications, design notes, reports, presentations, and validation documentation while mentoring junior engineers.

Requirements

• Bachelor’s degree in mechanical engineering, aerospace engineering, or a relevant field.
• At least 7 years of engineering design and analysis experience, including 2 or more years supporting production hardware and implementing design-for-manufacturing or assembly changes.
• Hands-on experience designing parts for high loads or extreme environments.
• Strong knowledge of static structures and heat transfer, plus familiarity with the full mechanical design process.
• Required: CAD proficiency and FEA experience. NX, ANSYS, and COMSOL are preferred.
• Self-motivated, committed to professional growth, and capable of solving complex engineering problems.

Nice to have

• Experience designing components beyond desktop scale, including high-power, high-mass, or high-force systems.
• Production or heavy-equipment assembly experience.
• Experience with electromagnets, vacuum systems, welding, composite materials, radiation environments, or cryogenic environments.
• Expertise in ASME Y14 GD&T principles.

Culture & Benefits

• Equity and competitive compensation.
• 13 company-wide holidays, flexible vacation days, and 10 sick days.
• Generous parental leave policy.
• Health, dental, and vision insurance, plus a 401(k) with employer matching.
• Professional growth opportunities and team-building activities.
• Values include integrity, execution, impact, self-critique, and diverse perspectives.