# Software Engineer Intern at Commonwealth Fusion Systems

- Company: [Commonwealth Fusion Systems](https://cfs.energy)
- Location: Devens, MA
- Type: Internship · Internship
- Posted: 2026-11-03
- Apply: https://jobs.lever.co/cfsenergy/f71bb176-75b9-4a30-8b2a-e3078b45505d/apply
- Page: https://newgrad.ai/jobs/software-engineer-intern-3095dc51

## Summary by newgrad.ai

What you'll do:

- Build simulation models and infrastructure for real-time and offline systems.
- Create control software for Linux, microcontrollers, FPGAs, and PLCs.
- Develop full-stack tools for data storage, analysis, and operator interfaces.

What they're looking for:

- Students pursuing engineering degrees with a Computer Science focus.
- Proficiency in Python, C++, or Golang.
- Experience with control systems or real-time software development.
- Ability to work on-site in Devens, MA.

Pay and perks:

- 13-18 week internship duration.
- 40-50 hours per week.
- Hourly salary determined by current year in school.

## Posting

### 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.

### Program Details:

- 13-18 week internship
- 40-50 hours per week with set hourly salary based on year in school
- Opportunities on site in Devens, MA. If an intern is going to be on site, you will be responsible for your own transportation and housing
- Specific project assignments and required technical skillset will vary based on the team’s existing need.
- Opportunities available for currently enrolled college students in all levels of schooling from bachelor’s degree to PhD
- Interns must be authorized to work in the United States for any employer

### 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

### Must-have Requirements:

- Willingness to travel or work required nights/weekends/on-call occasionally
- Perform activities such as typing, standing, or sitting for extended periods of time
- Dedication to safety to mitigate industrial hazards that may include heat, cold, noise, fumes, strong magnets, lead (Pb), high voltage, and cryogenics

#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.

From Commonwealth Fusion Systems's public posting, laid out for reading by newgrad.ai with the wording unchanged. Check the original before you apply.

---

More new-grad and intern roles: https://newgrad.ai/llms.txt