Senior Mechanical Engineer, High-Temp Process Equipment

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

Benefits offered by this job

Health, dental & vision insurance

13 Company-wide Holidays

Flexible vacation days

10 sick days

Generous parental leave policy

401(k) with employer matching

Professional growth opportunities

Team-building activities

Job summary

Commonwealth Fusion Systems in Devens, MA, is seeking a Senior Mechanical Engineer, Process Equipment, to lead the design of fluid process systems and molten salt equipment for test facilities and pilot plants. You will interface with suppliers and construction teams, develop equipment specifications, and drive safe, reliable design at scale.

Required: 8+ years in process equipment, strong ASME BPVC/B31.3 knowledge, experience with fixed equipment and high-temperature systems, and proven

Qualifications

• Bachelor’s degree in Chemical or Mechanical Engineering.
• 8+ years of mechanical engineering experience in process equipment.
• Strong knowledge of ASME BPVC and B31.3 and related codes.
• Experience designing industrial-scale fixed equipment and high-temperature systems.
• Experience managing external partners and suppliers.

Responsibilities

• Lead the design of fluid process systems for testing at varying scales.
• Develop specifications and designs for high-temperature molten salt equipment.
• Interface with suppliers and construction teams to procure, install and commission equipment.
• Support fixed equipment mechanical reliability in later project stages.
• Collaborate across teams to incorporate R&D learnings into designs.
• Prioritize safety and track progress against milestones.

Skills

ASME BPVC

ASME B31.3

Fixed equipment design

High-temperature design

Supplier management

Hazardous fluids design

Refinery/chemical plant experience

P&IDs, CAD, process diagrams

Safety-focused

Team collaboration

Education

Bachelor's degree in Chemical or Mechanical Engineering

Tools

CAD

Process flow software

P&ID drafting

Job description

Commonwealth Fusion Systems in Devens, MA, is seeking a Senior Mechanical Engineer, Process Equipment, to lead the design of fluid process systems and molten salt equipment for test facilities and pilot plants. You will interface with suppliers and construction teams, develop equipment specifications, and drive safe, reliable design at scale.

Required: 8+ years in process equipment, strong ASME BPVC/B31.3 knowledge, experience with fixed equipment and high-temperature systems, and proven