Multiphysics Simulation Engineer

helion· Mechanical Engineering
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📍 Everett, WAFullTime💰 USD 138K–182K/yr

About this role

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:

You will own hardware designs for Helion's fusion generator prototypes. You will solve multidisciplinary engineering problems that are necessary for deploying fusion energy to the world and act as a culture driver on a growing team. You will report directly to our Engineering Manager at our Everett, WA office.

You Will:

  • Enhancing Helion’s analysis workflow for critical structures (electromagnets)

  • Running transient multiphysics finite-element models to generate margins for critical designs

  • Collaborating with a multidisciplinary engineering team to improve critical hardware designs

  • Learning from in-house experts to expand your skillset into electrical and thermal analysis

  • Building software tools to automate the analysis workflow and allow Helion engineers and scientists to run their own analysis

Required Skills:

  • You have a bachelor’s degree in electrical engineering, applied mathematics, physics or related field with a minimum of 3 years of engineering experience.

  • Strong background in analytical, computational and numerical simulation methods

  • A foundation of understanding of electromagnetic and thermal finite element modeling

  • Experience in taking on analysis problems from formulation through testing and model correlation.

  • Proficiency with multiphysics finite-element analysis tools such as COSMOL, ANSYS, Opera or equivalent

  • Experience with programming environments (Matlab, Python, etc.) for scripting, tooling or data analysis

  • Desire to positively impact complex structural designs, rather than just execute on analysis

#LI-Onsite #LI-KL1

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.

Frequently Asked Questions

What is the salary for the Multiphysics Simulation Engineer role at helion?
The listed salary for this Multiphysics Simulation Engineer position at helion is USD 138K–182K/yr. This is an FullTime role.
Where is the Multiphysics Simulation Engineer position at helion located?
This Multiphysics Simulation Engineer role at helion is based in Everett, WA. The position is listed as on-site or hybrid. Check the full job description or apply directly to confirm the work arrangement.
Is the Multiphysics Simulation Engineer role at helion full-time or part-time?
This is listed as a FullTime position. It is posted as a Multiphysics Simulation Engineer role in the Mechanical Engineering department at helion.
Which team or department does the Multiphysics Simulation Engineer at helion belong to?
This Multiphysics Simulation Engineer position is part of the Mechanical Engineering department at helion. See the full job description for more information about the team structure and responsibilities.
How do I apply for the Multiphysics Simulation Engineer position at helion?
Click the "Apply Now" button on this page. You will be redirected to helion's official application portal hosted on ashby where you can submit your application directly.
When was the Multiphysics Simulation Engineer job at helion posted?
This Multiphysics Simulation Engineer position at helion was posted on Jun 3, 2026. Apply as soon as possible — early applications are often reviewed first.
Multiphysics Simulation Engineer
helion · 💰 USD 138K–182K/yr
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You'll be redirected to helion's official application page on Ashby ATS.