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Fusion Systems Engineer Jobs (NOW HIRING)

Commonwealth Fusion Systems

Diagnostician

Devens, MA

$110K - $185K/yr

Commonwealth Fusion Systems is on a mission to deliver the urgent transition to fusion energy ... Bachelor's degree in a relevant engineering field (mechanical, aerospace, civil or nuclear)

Commonwealth Fusion Systems

Diagnostician

Devens, MA

$110K - $185K/yr

Commonwealth Fusion Systems is on a mission to deliver the urgent transition to fusion energy ... Bachelor's degree in a relevant engineering field (mechanical, aerospace, civil or nuclear)

Commonwealth Fusion Systems

Diagnostician

Devens, MA · On-site

$110K - $185K/yr

Commonwealth Fusion Systems is on a mission to deliver the urgent transition to fusion energy ... Bachelor's degree in a relevant engineering field (mechanical, aerospace, civil or nuclear)

Commonwealth Fusion Systems

R&D Engineer

Devens, MA · On-site

Commonwealth Fusion Systems is on a mission to deliver the urgent transition to fusion energy ... Join the power movement as a R&D Engineer The NINT Magnet R&D team is responsible for testing and ...

Commonwealth Fusion Systems

R&D Engineer

Devens, MA · On-site

Commonwealth Fusion Systems is on a mission to deliver the urgent transition to fusion energy ... Join the power movement as a R&D Engineer The NINT Magnet R&D team is responsible for testing and ...

Commonwealth Fusion Systems

R&D Engineer

Devens, MA · On-site

Commonwealth Fusion Systems is on a mission to deliver the urgent transition to fusion energy ... Join the power movement as a R&D Engineer The NINT Magnet R&D team is responsible for testing and ...

Xcimer Energy

Systems Engineer

Denver, CO · On-site

Our mission is to deploy fusion power plants to meet global decarbonization goals as fast as ... As a Systems Engineer , you will apply your skills to define requirements, execute architectural ...

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Fusion Systems Engineer information

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$53.5K

$127.2K

$167K

How much do fusion systems engineer jobs pay per year?

As of Jun 23, 2026, the average yearly pay for fusion systems engineer in the United States is $127,215.00, according to ZipRecruiter salary data. Most workers in this role earn between $98,000.00 and $157,000.00 per year, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as a Fusion Systems Engineer, and why are they important?

To excel as a Fusion Systems Engineer, you need a robust background in physics or engineering, with experience in plasma physics, thermodynamics, and nuclear systems, often supported by an advanced degree. Familiarity with simulation software (such as COMSOL, ANSYS), control systems, and safety protocols, as well as knowledge of relevant certifications, are commonly required. Strong analytical thinking, problem-solving abilities, and effective teamwork enhance performance in multidisciplinary project environments. These skills are crucial for ensuring the safe, efficient, and innovative development of fusion energy systems.

What is a Fusion Systems Engineer?

A Fusion Systems Engineer is a specialized engineer who designs, develops, and maintains the complex systems required for nuclear fusion energy production. They work on integrating various subsystems such as plasma containment, heating, diagnostics, and safety controls in fusion reactors. Their role often includes collaboration with physicists, material scientists, and other engineers to ensure the fusion system operates efficiently and safely. Fusion Systems Engineers are crucial to advancing fusion energy as a viable and sustainable power source.

What are some common challenges faced by Fusion Systems Engineers when working on multidisciplinary teams?

Fusion Systems Engineers often collaborate with specialists in areas like plasma physics, materials science, and control systems. A common challenge is bridging the communication gap between different disciplines to ensure all technical requirements are understood and integrated. Additionally, managing complex project timelines and coordinating experiments or simulations can be demanding due to the evolving nature of fusion technology. Effective teamwork, adaptability, and strong problem-solving skills are key to overcoming these challenges and driving project success.
Infographic showing various Fusion Systems Engineer job openings in the United States as of June 2026, with employment types broken down into 8% Full Time, 84% Part Time, and 8% Contract. Highlights an 87% Physical, 5% Hybrid, and 8% Remote job distribution, with an average salary of $127,215 per year, or $61.2 per hour.
Knowledge Systems Engineer - Fusion Systems

Knowledge Systems Engineer - Fusion Systems

Helion Energy

Everett, WA • On-site

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

This job post has expired today. Applications are no longer accepted.

Job description

About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
We're looking for someone to build Helion's internal knowledge foundation from the ground up-capturing operational procedures, experimental insights, and machine behavior-and turning that into a structured, scalable system that can support AI-assisted workflows and future automation.
This role spans documentation, data structuring, and applied AI. You'll work directly with engineers and operators to turn fragmented, implicit, and fast-changing knowledge into something durable, searchable, and actionable. This is a hands-on, applied role focused on building systems around LLMs and operational data-not training models from scratch. This is an onsite role that reports directly to the Research and Development Manager at our Everett, WA office.
You Will:
  • Capture & document procedures, experiments, and workflows by partnering with engineers and operators to turn fragmented knowledge into clear runbooks
  • Structure & standardize documentation through docs-as-code practices, including versioning, formatting, reviews, and defined schemas
  • Integrate & organize data by linking documentation with logs, configs, and analysis outputs to improve consistency and clarity
  • Develop AI-assisted tools by partnering with software engineers to inform LLM-powered solutions
  • Prototype automation through lightweight agents and workflows (e.g., run summaries, anomaly investigation) while laying the foundation for more advanced systems

Required Skills:
  • Experience with data or knowledge modeling (schemas, metadata, ontologies)
  • Experience with technical documentation systems (e.g., Confluence/Jira or similar)
  • Strong software engineering skills (Python or similar)
  • Ability to structure ambiguous information into structured systems
  • Experience working with domain experts to extract knowledge

Preferred Skills:
  • Experience building internal tools for engineering teams
  • Exposure to CAD or engineering design tools
  • Experience using LLM APIs (e.g., OpenAI, Claude) in production systems
  • Experience building LLM-powered tools (RAG, search, etc.)
  • Exposure to large scale hardware environment

#LI-Onsite #LI-IB1
Benefits
Our total compensation package includes benefits, including but not limited to:
• Medical, Dental, and Vision plans for employees and their families
• 31 Days of PTO (21 vacation days and 10 sick days)
• 10 Paid holidays, plus company-wide winter break
• Up to 5% employer 401(k) match
• Short term disability, long term disability, and life insurance
• Paid parental leave and support (up to 16 weeks)
• Annual wellness stipend
Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.

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