Intern - Software Engineer - Summer 2027
Devens, MAInternshipPosted Nov 3, 2026
Requirements at a glance
Intern - Software Engineer - Summer 2027 at Commonwealth Fusion Systems is an internship role based in Devens, MA. The posting mentions a doctorate. It requires existing authorization to work, so sponsorship should not be expected. Key skills include Python, C++, Go, and Linux. Applications are submitted through Lever.
- Education
- Doctorate (PhD) (mentioned)
- Visa sponsorship
- Existing work authorization required
- Application platform
- Lever
Skills in this posting
- Python
- C++
- Go
- Linux
- Excel
From the employer
- Eligibility:
Opportunities available for currently enrolled college students in all levels of schooling from bachelor’s degree to PhD
Extracted automatically from the job description. Confirm details in the full posting below.
About Commonwealth Fusion Systems:
Commonwealth Fusion Systems is on a mission to deliver the urgent transition to fusion energy.
Combining decades of research, top talent, and new technologies, we’re designing and building commercially viable fusion power plants. And we're working with policymakers, suppliers, and many others to build the energy industry of the future.
We’re in the best position to make it happen. Since 2018, we’ve raised $4 billion of capital, making us the largest and leading fusion company in the world.
Now we’re looking for more thinkers, doers, builders, and makers to join us. People who’ll bring new perspectives, solve tough problems, and thrive as part of a team.
If that’s you and this role fits, we want to hear from you.
Join the power movement as a Software Engineering Intern
We are looking for a talented Software Engineering Intern to join our team! CFS interns are highly valued within the organization and placed into meaningful and challenging roles.
#LI-Onsite
At CFS, we excel in fast-paced environments, driven by our values of integrity, execution, impact, and self-critique. As we grow, we’re eager to bring on mission-driven folks who offer diverse perspectives and fresh ways to tackle challenges.
We value diversity deeply and are proud to be an equal opportunity employer by choice. We consider all qualified applicants equally, regardless of race, color, national origin, ancestry, citizenship status, protected veteran status, religion, physical or mental disability, marital status, sex, sexual orientation, gender identity or expression, age, or any other basis protected by law.
This role requires compliance with U.S. laws concerning the export of controlled or protected technologies or information (collectively, “Export Control Laws"). Any offer of employment will be contingent on the need for compliance with such Export Control Laws.
Program Details:
What you'll do:
- Develop simulation models and model infrastructure for both real-time and off-line (high fidelity) simulations
- Develop control software across multiple platforms, including real-time Linux, microcontrollers, FPGAs, or PLCs
- Full-stack software development for internal data storage & analysis tools
- Develop operator interfaces, workflows, and data analysis tools
What we’re looking for:
- Pursuing an engineering degree with focus in the field of Computer Science
- Familiar with programming languages such as C++, Python, and Golang
- Experience with control or real time software
- Hands-on experience through academic research, project teams, machine shops, hackathons, or industry internships
- Demonstration of exceptional results through a range of different pursuits
- High self-motivation and drive to execute quickly with excellent troubleshooting/problem-solving skills Strong communication skills and a willingness to learn