Staff Controls & Software Engineer – Industrial Automation

Commonwealth Fusion Systems; Milpitas (CA); On-site; USD 160,000 - 220,000; Full time

Benefits offered by this job

Equity

Health insurance

401(k) matching

Professional growth opportunities

Flexible vacation

Job summary

Commonwealth Fusion Systems is seeking a Staff Controls and Software Engineer in Milpitas to design and implement machine and operational concepts with R&D and engineering peers. You will craft robust system architecture to support PLCs, safety devices, HMIs, and more, from design through commissioning and validation.

You will collaborate with cross-functional teams, integrate into testbeds, and ensure reliable operation across the equipment lifecycle, with opportunities to work with simulation

Qualifications

• Bachelor’s degree in electrical, mechatronics or software engineering.
• 10+ years of controls engineering experience on complex mechanical systems.
• Experience with industrial control panel design, 480VAC power systems, fieldbus configurations.
• Experience with AutoCAD Electrical for schematic/cable designs.
• Proficiency in structured text programming and TwinCAT IDE; familiarity with TwinSAFE.

Responsibilities

• Outline interfaces and requirements for equipment and software operation.
• Participate in initial equipment concept development balancing specs, control requirements and costs.
• Design and approve electrical schematics per NFPA79/NEC/UL508A.
• Create machine interactions with SCADA for status and acceptability.
• Develop PLC code with clear structure, documentation, and reusability.
• Ensure safe operation with ANSI/RIA15.06/OSHA compliant controls.
• Develop simple but effective HMI screens for troubleshooting.
• Coordinate with external software contractors on control system development.

Skills

Industrial control systems

PLC programming

HMI design

IEC 611:31-3 languages

TwinSAFE safety PLC

TwinCAT IDE

AutoCAD Electrical

Python

GitHub & CI/CD

Education

Bachelor’s degree in EE / Mechatronics / Software

Tools

AutoCAD Electrical

TwinCAT IDE

TwinSAFE safety PLC

IEC programming languages

GitHub

CI/CD tooling

Ignition (Inductive Automation)

Job description

Commonwealth Fusion Systems is seeking a Staff Controls and Software Engineer in Milpitas to design and implement machine and operational concepts with R&D and engineering peers. You will craft robust system architecture to support PLCs, safety devices, HMIs, and more, from design through commissioning and validation.

You will collaborate with cross-functional teams, integrate into testbeds, and ensure reliable operation across the equipment lifecycle, with opportunities to work with simulation