Senior Controls Engineer — Advanced Automation & Equity

Commonwealth-Fusion-Systems-5; Harvard (MA); On-site; USD 134,000 - 205,000; Full time

Benefits offered by this job

Equity options

13 company-wide holidays

Flexible vacation days

Health, dental, vision insurance

401(k) with employer matching

Professional growth opportunities

Job summary

Commonwealth Fusion Systems seeks a Senior Controls Engineer to own complex machine and process control strategies, lead equipment development, and mentor junior staff. You will design system architectures, write PLC logic, and collaborate across functions to deliver reliable, scalable control solutions for fusion-related equipment.

You will lead ROOT CAUSE analyses, ensure safety-compliant enclosure designs, and drive data-driven improvements while coordinating with external vendors and

Qualifications

• Bachelor's degree in engineering (required).
• 7+ years' experience as a controls engineer on complex electro-mechanical systems.
• Mastery of IEC 61131-3 designated languages for programming and troubleshooting automation controllers.
• Experience with control reliable safety systems (ANSI/RIA R15.06/OSHA compliant).
• Enclosure design compliant with NFPA79/NEC/UL508A standards.
• Ability to lift up to 50 lbs occasionally; willingness to travel and work nights/weekends/on-call.

Responsibilities

• Lead initial equipment conceptual development balancing product specs, process control, layout complexity, and lead time.
• Serve as Responsible Engineer for complex assets or SCADA modules, manage deployment through commissioning and stabilization.
• Diagnose complex equipment failures and lead formal root cause analyses for long-term solutions.
• Provide technical leadership on long-term problems and mentor junior staff.
• Create and approve robust system architectures and electrical schematics for manufacturing equipment.
• Write and debug PLC structured text with maintainable, reusable code.
• Define requirements and packages for external vendors and integrators.
• Contribute to department policies and data-driven tool development.

Skills

Automation troubleshooting

Electrical control systems

Technical leadership

Root cause analysis (RCA)

Cross-functional collaboration

Education

Bachelor's degree in engineering

Tools

Beckhoff

Siemens controls

Ignition SCADA

AutoCAD Electrical

IO-Link / MQTT

Job description

Commonwealth Fusion Systems seeks a Senior Controls Engineer to own complex machine and process control strategies, lead equipment development, and mentor junior staff. You will design system architectures, write PLC logic, and collaborate across functions to deliver reliable, scalable control solutions for fusion-related equipment.

You will lead ROOT CAUSE analyses, ensure safety-compliant enclosure designs, and drive data-driven improvements while coordinating with external vendors and