Senior Data and Operations Software Engineer
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Before you apply
LocationDevens, MA
Work modehybrid
Typefull-time
SenioritySenior
Experience7+ yrs
DepartmentEngineering, Software Engineering
Company size501–1,000 people
PostedAug 20, 2026 · 2mo ago
Verified live3d ago
At a glanceSummarised by Seekless from the posting.
Bachelor's degree in a relevant engineering field (computer science, computer engineering, electrical engineering, industrial engineering, etc.)
7+ years relevant experience
Proven experience as a backend software engineer working on distributed systems and REST APIs
Strong problem-solving skills and attention to detail
Excellent communication and teamwork skills
Ability to work in a fast-paced, collaborative, and innovative environment
Proficiency with Python
Proficiency with Go (Golang) or similar language
Familiarity with Linux and development tools such as Git, GitHub, and Docker
Perform activities such as typing, standing, sitting, etc. for extended periods of time
Dedication to safety to mitigate industrial hazards
Experience in developing software for mission-critical applications
Experience with real-time data collection and visualization
Experience with very large volume data collection
Some familiarity with front-end frameworks such as React
Willingness to occasionally travel or work required nights/weekends/on-call
Compliance with U.S. export control laws
Skills
Go
Python
Git
GitHub
Docker
Linux
React
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 Data and Operations Software Engineer
The Software Engineering team is seeking an experienced and motivated backend software engineer to become a member of the Data and Operations Software group. The group is responsible for the company’s data services and as a backend software engineer you will play a crucial role in developing the APIs and distributed systems that facilitate data acquisition, access, and processing capabilities within the company. You will work closely with physicists and other software engineers to create robust and high-performance data systems tailored to the unique needs of our groundbreaking work in the field of fusion energy.
What you’ll do:
•
Develop the distributed systems and services that provide data acquisition, access, and processing capabilities within the company
•
Write clean, maintainable, and efficient code in Golang
•
Write a user-friendly Python client library
•
Collaborate with physicists, diagnosticians, and other engineers to gather user stories and translate the resulting requirements into code
•
Optimize backend performance to improve data ingestion, retrieval, and processing times
•
Help make fusion energy a reality by making it possible to collect, retrieve, and analyze data from simulations and experiments
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
•
Proven experience as a backend software engineer working on distributed systems and REST APIs
•
Strong problem-solving skills and attention to detail
•
Excellent communication and teamwork skills
•
Ability to work in a fast-paced, collaborative, and innovative environment
•
Proficiency with Python
•
Proficiency with Go (Golang) or similar language that is suitable for web services
•
Familiarity with Linux and development tools such as Git, GitHub, and Docker
Bonus points for:
•
Experience in developing software for mission-critical applications
•
Experience with real-time data collection and visualization
•
Experience with very large volume data collection
•
Some familiarity with front-end frameworks such as React
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
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.
Legal
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.