Log inSign up free
  • Home
  • Jobs
    • Applications
    • Career
    • Resume
    • Cover letters
  • Content
    • Posts
    • Media
  • Messages
  • Analytics
    • Overview
    • Pages
  • Builder
    • Templates
  • More tools
    • Profile
    • Hiring
  • Settings
All jobs
CFCommonwealth Fusion Systems logo

Commonwealth Fusion Systems

Devens, MA

Senior Algorithms and Simulation Software Engineer.

FULL TIMESENIOR LEVELENGINEERING
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.

What you'll do:

  • Develop mission-critical state estimation and control algorithms
  • Develop software infrastructure to operate Hardware-in-the-Loop (HITL) and software-only testbeds
  • Develop simulation models and model infrastructure for both real-time and offline (high fidelity) simulations
  • Develop offline data analysis tools
  • Help define and execute end-to-end and other integrated test cases and test plans to validate SPARC control software

What we’re looking for:

  • Bachelor's degree in a relevant engineering field (computer science, computer engineering, electrical engineering, industrial engineering, etc.)
  • 7+ years relevant experience
  • Professional experience writing real-time state estimation and control algorithms
  • Experience with 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++, Rust, etc)

Bonus points for:

    • Experience with Hardware-in-the-Loop testbeds and software-only testbeds for validating control software
    • Experience writing models to validate software
    • Familiarity with Linux
    • Familiarity with general networking (IP/UDP)

Must-have Requirements:

  • Perform activities such as 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
#LI-Hybrid
 
 

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.
Pay
Not stated
Where
Devens, MA
Work
Not stated
Type
Full time
Posted
20 Aug, 2026
Apply on the original postingSign in to apply

Verified board

more at Commonwealth Fusion Systems.

5 Oct, 2026

Commonwealth Fusion Systems

Welder - Differential Pay for Weekend & Night Shifts

CFCommonwealth Fusion Systems logo
  • Full time
  • People & Ops

Devens, MA

Full time

Details
22 Oct, 2026

Commonwealth Fusion Systems

Treasury and Tax Analyst

CFCommonwealth Fusion Systems logo
  • Full time
  • Finance & Legal

Devens, MA

Full time

Details
14 Oct, 2026

Commonwealth Fusion Systems

Techno-Economic Analyst

CFCommonwealth Fusion Systems logo
  • Full time
  • People & Ops

Devens, MA

Full time

Details

similar roles.

26 Oct, 2026

1Kosmos

Senior Solutions Engineer - Public Sector

1K1Kosmos logo
  • Full time
  • Senior level
  • Remote
  • Engineering

$160k–200k/yr

United States

Details
27 Oct, 2026

1Kosmos

Senior Implementation Engineer

1K1Kosmos logo
  • Full time
  • Senior level
  • Remote
  • Engineering

United States

Remote

Details
30 Oct, 2026

lemlist.com

Staff Engineer - Fullstack JS/TS

LClemlist.com logo
  • Full time
  • Staff level
  • Remote
  • Engineering

Paris

Remote

Details
29 Oct, 2026

unr.edu

Senior Systems and Applications Developer, Research and Innovation

UEunr.edu logo
  • Senior level
  • Engineering

University of Nevada +2

Salary not listed

Details
28 Oct, 2026

BILL

Senior Software Engineer

BIBILL logo
  • Senior level
  • Engineering

United States

Salary not listed

Details
29 Oct, 2026

Compeer Financial

Software Engineer

CFCompeer Financial logo
  • Hybrid
  • Engineering

IL-Bloomington, WI-Sun Prairie +1

Hybrid

Details