Helion · 3 months ago
Senior Nuclear Materials Engineer
Everett, WA
Full-time
Onsite
Senior Level, Lead/Staff
$160K/yr - $200K/yr
8+ years expHelion Energy is a fusion power company based in Everett, WA, dedicated to building the world's first fusion power plant for unlimited clean electricity. The Senior Nuclear Materials Engineer will develop materials designs for high-radiation environments, providing analysis and guidance on material performance under radiation exposure while collaborating with cross-functional teams.
EnergyEnvironmental EngineeringRenewable Energy
Responsibilities
Advise engineering design decisions based on radiation effects (due to neutrons) on materials used within the radiation shield vault, e.g., metals used in magnet coils, dielectrics used for structure, and ceramics
Partner with neutronics engineers to predict dpa, analyze, model, and predict macroscopic effects on material properties including thermal conductivity, electrical resistivity, and mechanical strength. Assess system-level radiation risk
Lead testing campaigns to quantify impact of radiation on material properties
Perform literature reviews on radiation effects on materials of interest and distill the information into summaries for non-nuclear engineers
Operate in an environment with obstacles and changing requirements. Balance risks without compromising the delivery
Partner with other internal Helion teams, external vendors, national laboratories, and universities to gather the required capabilities
Develop your network and represent Helion at technical meetings and conferences
Qualification
Required
A professional understanding of radiation effects on materials, typically demonstrated by a degree in nuclear engineering, materials science, physics, or related discipline and 8+ years of hands-on work
8+ years of experience handling radioactive material
4+ years of experience working on non-aqueous corrosion and environmentally assisted degradation mechanisms (e.g., stress corrosion cracking, creep, accelerated fatigue)
4+ years of experience working on neutron interactions leading to e.g., material transmutation or helium bubble generation
4+ years of experience performing data analysis with a common coding language (Python, MATLAB, C++), data presentation, technical communication, and writing. Data presentation should include rigorous consideration of uncertainty and statistics
Benefits
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
Company
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.
201-500 employees
H1B Sponsorship
Helion has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2024 (1)
2023 (2)
2022 (1)
2021 (1)
Funding
Current Stage
Late StageTotal Funding
$1.04BKey Investors
Nucor CorporationSam AltmanDustin Moskovitz
2025-01-28Series F· $425M
2023-09-27Corporate Round· $35M
2021-11-05Series E· $500M
Leadership Team
David Kirtley
Founder and CEO
Chris Pihl
Co-Founder, CTO
Recent News
2025-12-24
Crunchbase News
2025-12-18
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2025-12-17
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