Senior Algorithms and Simulation Software Engineer

EngineeringSeniorhybridDevens, MA

Full-timePosted Aug 20, 2026

About this role

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 Senior Algorithms and Simulation Software Engineer

In this role you will be responsible for the design and implementation of state estimation and control algorithms, plus models and simulation frameworks necessary to verify those algorithms. Your algorithms will be used in critical real-time applications in the SPARC project, as well as related projects.

As a member of the Software Engineering team, you will be a hands-on technical contributor. You will be a champion of writing excellent quality, production-ready code for mission-critical real-time systems. You will collect functional requirements from customers and produce software solutions to meet these requirements.

You will work with a variety of engineers to integrate your software into software testbeds, hardware testbeds, and the production tools. You will also contribute to the broader software ecosystem to improve tooling and processes used across the company.

About Cfsenergy

All their roles ↗LinkedIn ↗Crunchbase ↗

Interested?

Find the right person, then reach out. Trying more than one channel only helps your odds.

Find who to reach

Pick the person worth a direct note. Reveal a real email (one credit) or find a likely one.

New accounts start with 3 free reveals.

Reach out

Pick someone above, then draft an email or a LinkedIn note to them.

Or apply on their site

The front-door route, plus TRECQ drafts your application answers to paste.

Apply on Cfsenergy ↗

TRECQ writes your "why this company / why you" to paste into the form.