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Senior Control Software Engineer

About Commonwealth Fusion Systems: 

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Cfsenergy Source published Sep 20, 2026 Verified 7 hours ago
✓ 100% verification score · Source: cfsenergy (lever) · Always confirm final requirements on the original source.
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EmploymentFull-time

Overview

About Commonwealth Fusion Systems: 

Full job description

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 Control Software Engineer

As a Control Software Engineer, you will be responsible for the design, implementation, and verification of software and controls for advanced R&D equipment and complex machinery.

As a member of the Software Engineering team you will be a hands-on technical contributor, 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.

Develop control software across multiple platforms, including PLCs and real-time Linux

Develop operator interfaces and workflows

Improve software tooling to increase developer velocity and enable new capabilities

Bachelor's degree in a relevant engineering field (computer science, computer engineering, electrical engineering, industrial engineering, etc.)

Several years of experience with industrial control systems and/or embedded control systems

Several years of experience in producing production quality control software

Working knowledge of modern software development lifecycle practices (CI/CD, git version control, unit testing, integration testing, etc)

Proficiency with python

Proficiency with at least one real-time control language (c++, SCL/ST, rust, etc)

Familiarity with industrial control platforms (e.g. Beckhoff TwinCat)

Familiarity with Linux

Experience with industrial protocols (e.g. EtherCat, Profinet, Modbus, etc)

Familiarity with general networking (IP/UDP)

Ability to occasionally lift up to 50 lbs

Perform activities such as stooping, climbing, typing, standing, sitting, etc. 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, high current, pressure systems, and cryogenics

Willingness to occasionally travel or work required nights/weekends/on-call

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