R&D Engineer II

Commonwealth Fusion Systems

Join Commonwealth Fusion Systems as an R&D Engineer II for HTS magnet technology. Design and test innovative solutions to advance fusion energy systems with a collaborative R&D team.

Posted 6/12/2026full-timeDevens • Massachusetts • 🇺🇸 United StatesMid-LevelSenior💰 $90,000 - $145,000 per yearWebsite

About the role

Key responsibilities & impact

Develop new HTS magnet designs and their associated subsystems, which includes the designing and building R&D test samples, and developing their manufacturing processes and test operations
Design, build, and commission test equipment required to accomplish R&D test campaign objectives
Perform structural, electrical, and/or thermal analyses in support of R&D sample design and to predict test results
Build expertise in testing HTS magnets as well as how to design and build R&D HTS magnets and their associated subsystems, including power delivery, cryogenic cooling, and structures
Support the production, integration, and commissioning of SPARC NINT coils as issues requiring HTS magnet build and test expertise arise
Understand, challenge, and maintain well documented requirements and risks for the system or component under test, and align stakeholders on why the planned test is required and what data is deemed essential for the desired outcome to be achieved
Collaborate with I&C engineers to develop necessary instrumentation and data acquisition systems.
Maintain documentation, schedules, and budgets for test campaigns. Documentation includes: design reviews, wiring lists, P&IDs, schematics, CAD assemblies, drawings, BOMs, data acquisition systems, and operations software
Develop custom tools to analyze generated data. Compile test results in presentations for review
Prepare and deliver presentations containing trade studies, design reviews, test readiness reviews, and test data reviews to teams of engineers and physicists

Requirements

What you’ll need

Bachelor’s degree in engineering or science field is required; mechanical engineering, electrical engineering or similar, or applied physics degree preferred
3+ years’ experience as an R&D engineer or test engineer designing, building, commissioning complex electromechanical systems
Experience with selecting and utilizing instrumentation and control components such as thermocouples, voltage and current sensors, oscilloscopes, pressure transducers, strain gauges, heaters, flow meters, fittings and valves
Experience with developing and executing test procedures
Proficiency with CAD design in Siemens NX or equivalent CAD software
Familiarity with electromagnetic fundamentals - voltage, current, resistance, Ohm’s law, AC/DC, right-hand rule, solenoids, etc
Excellent troubleshooting / problem-solving skills with great attention to detail
Experience developing and effectively presenting comprehensive trade studies comparing the pros & cons of various technical approaches
Data reduction and analysis skills that can be used in generating anticipated results and processing generated data
Effective at communicating technical topics to both technical and non-technical audiences
High self-motivation and drive to execute quickly
Collaboration skills including active listening and facilitating production discourse on problems
Willingness to challenge the status quo in search of better, more efficient methods****

Benefits

Comp & perks

Competitive compensation with equity
13 Company-wide Holidays
Flexible vacation days
10 sick days
Generous parental leave policy
Health, dental, and vision insurance
401(k) with employer matching
Professional growth opportunities
Team-building activities

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

R&D engineeringtest engineeringelectromechanical systemsinstrumentation and controltest proceduresCAD designdata reductiondata analysisthermal analysisstructural analysis

Soft Skills

troubleshootingproblem-solvingattention to detaileffective communicationcollaborationactive listeningpresentation skillsself-motivationdrive to executewillingness to challenge