R&D Engineer - High-Voltage Vacuum Systems

Commonwealth Fusion Systems; Harvard (MA); On-site; USD 110,000 - 170,000; Full time

Job summary

Commonwealth Fusion Systems in Cambridge, MA is seeking an R&D Engineer to design, build, and commission high voltage systems for superconducting magnets, supporting SPARC/ARC projects. You will run tests, analyze data, and collaborate across manufacturing, R&D, procurement, and SPARC teams to achieve aggressive schedules.

A multidisciplinary background and strong communication skills are essential. Join a mission-driven team advancing fusion energy, with opportunities to tackle challenging

Qualifications

• Bachelor’s degree in engineering or science field required;Mechanical, electrical, or applied physics preferred.
• 2+ years’ experience as an R&D/test engineer for complex electromechanical systems.
• Experience selecting and using instrumentation such as thermocouples, sensors, oscilloscopes, transducers, strain gauges.
• Experience developing and executing test procedures.
• Proficiency with CAD design in Siemens NX or equivalent.
• Fundamental EM knowledge: voltage, current, resistance, Ohm’s law, AC/DC, solenoids.
• Strong troubleshooting and attention to detail.
• Ability to present trade studies comparing technical approaches.
• Data reduction/analysis skills for test results.

Responsibilities

• Develop new high voltage system designs and subsystems for R&D tests.
• Design, build, and commission high voltage test equipment for campaigns.
• Perform structural, electrical, and thermal analyses to predict test results.
• Build expertise in testing superconducting magnets under high voltage.
• Support production, test, integration, and commissioning of SPARC insulated coils.
• Maintain well-documented requirements and risks; align stakeholders on data needs.
• Collaborate with I&C engineers to develop instrumentation and data acquisition systems.
• Maintain documentation: wiring lists, schematics, CAD assemblies, BOMs, test logs, software.
• Develop data tools to analyze results; present trade studies and test data.
• Deliver presentations on trade studies, design reviews, and test readiness.

Skills

Engineering fundamentals

Instrument selection & testing

Test procedures

CAD design

Electromagnetics basics

Troubleshooting

Trade studies

Data analysis

Technical communication

Collaboration

Education

Bachelor's degree in engineering or science

Mechanical/Electrical engineering or applied physics preferred

Tools

Siemens NX

Oscilloscopes

Voltage/current sensors

Job description

Commonwealth Fusion Systems in Cambridge, MA is seeking an R&D Engineer to design, build, and commission high voltage systems for superconducting magnets, supporting SPARC/ARC projects. You will run tests, analyze data, and collaborate across manufacturing, R&D, procurement, and SPARC teams to achieve aggressive schedules.

A multidisciplinary background and strong communication skills are essential. Join a mission-driven team advancing fusion energy, with opportunities to tackle challenging