Full-Time

Senior Nuclear Materials Engineer

Updated on 3/13/2025

Helion Energy

Helion Energy

201-500 employees

Develops commercial fusion energy generators

Compensation Overview

$130k - $180kAnnually

+ Equity Grants

Senior, Expert

Everett, WA, USA

The job requires working in the Everett, WA office.

Category
Materials & Structures
Research & Development
Aerospace Engineering
Required Skills
Python
MATLAB
C/C++
Data Analysis
Requirements
  • A professional understanding of radiation effects on materials, typically demonstrated by a degree in nuclear engineering, materials science, physics, or related discipline and 6+ years of hands-on work
  • 4+ 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
Responsibilities
  • Advise engineering design decisions based on radiation effects (due to neutrons and photons) on materials used within the radiation shield vault, e.g., metals used in magnet coils, dielectrics used for structure, and polymers used for cable jacketing
  • 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
  • Perform literature reviews on radiation effects on materials of interest and distill the information into summaries for non-nuclear engineers, reactively. Maintain a database of radiation effects on materials
  • Operate in an environment with obstacles and changing requirements
  • 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

Helion Energy focuses on developing fusion generators to make fusion energy commercially viable. Their fusion generators are designed to be smaller, cheaper, and faster to produce compared to existing technologies. The company utilizes pulsed accelerator technology, which is essential for addressing the Helium-3 crisis, a critical element for clean fusion energy and advanced applications like medical imaging and computing. Helion's unique approach combines steady magnetic and inertial fusion, allowing them to create fusion engines that are significantly more efficient than competitors. Their goal is to have a commercial fusion plant operational within six years, aiming to lead the clean energy market.

Company Size

201-500

Company Stage

Series F

Total Funding

$980.9M

Headquarters

Everett, Washington

Founded

2013

Simplify Jobs

Simplify's Take

What believers are saying

  • Helion secured $425M Series F funding to accelerate commercialization efforts.
  • The planned fusion plant in Malaga positions Helion as a market leader.
  • Collaboration with Microsoft enhances Helion's technological and financial capabilities.

What critics are saying

  • Increased competition from Commonwealth Fusion Systems could impact Helion's market share.
  • The ITER project may overshadow Helion if it achieves breakthroughs first.
  • Achieving a net energy-positive fusion reaction remains a significant technical challenge.

What makes Helion Energy unique

  • Helion Energy's pulsed non-ignition technology offers low-cost, 24/7 power generation.
  • Their fusion engines are 1,000 times smaller and 500 times cheaper than competitors'.
  • Helion addresses the Helium-3 crisis, crucial for computing and medical imaging.

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Benefits

Medical, dental, & vision insurance

401k

Parental leave

Life & disability insurance

PTO

Equity

Social events

Growth & Insights and Company News

Headcount

6 month growth

4%

1 year growth

3%

2 year growth

6%
Securities.io
Mar 4th, 2025
Unraveling Safe And Practical Fusion – New Insights Into Trapped Fuel Shared

Fusion Fuel EfficiencyNuclear Fusion is potentially the ultimate green energy source, producing no dangerous byproducts, radioactivity (the only “waste” is helium), or greenhouse gases. And it could be powered by a fuel so abundant that it is a significant percentage of the entire Universe: deuterium, an isotope of hydrogen.But this is also a very difficult to achieve form of energy generation. It requires replicating on Earth the conditions in the core of the Sun, with tremendous pressures and tens or hundreds of millions of degrees.Nuclear fusion has been achieved in physics laboratories for decades, but a net energy-positive fusion reaction is still to be reached. This is what many are racing to accomplish, from the international megaproject ITER to commercial fusion projects like Commonwealth Fusion Systems and Proxima Fusion.Commercial viability will depend not only on achieving stable and energy-positive plasma generation, but also on the general efficiency of the process.One open question is the fuel efficiency. Deuterium is known to be partially absorbed by the walls of the tokamak fusion reactors. Researchers at Princeton University, University of California, University of Tennessee, Sandia National Laboratory, and General Atomics are figuring it out.They published their results in Nuclear Materials and Energy1, under the title “Deuterium retention behaviors of boronization films at DIII-D divertor surface”.Deuterium, Tritium FusionThe lighter an atom is, the more potential energy is released when it undergoes nuclear fusion

KPQ
Mar 4th, 2025
Chelan County's Role in Fusion Energy Plant

That's the hope, anyways, as Everett-based Helion Energy announced their plans to place the world's first fusion energy plant in Malaga with ground breaking expected to start this summer.

KPQ
Feb 27th, 2025
World's First Ever Fusion Power Plant Planned in Malaga

Director of Communications Jessie Barton says Helion will host a Community Event at 5:30 p.m. Tuesday, March 11 at Mission View Elementary School.

GeekWire
Feb 20th, 2025
Geekwire 200 Update: Here Are The Hot Tech Startups Moving Up Our List For Q1 2025

The latest update to the GeekWire 200 reveals which companies are growing quickly and making moves up our list of top-ranked Pacific Northwest tech startups.Sales software company Highspot (No. 1) retains the top spot on the GeekWire 200 after reaching the pinnacle last quarter.But there’s a new No. 2, with Helion jumping six spots thanks to a massive $425 million funding round announced last month. The Everett, Wash.-based fusion company is backed by OpenAI CEO Sam Altman and has a deal with Microsoft as it chases the “Holy Grail” of clean energy.Other companies rising in the top 10 include:Health data startup Truveta (No. 7), which just raised $320 million.Developer testing platform Statsig (No. 9), which had an “epic Q4,” according to its CEO.(No

Securities.io
Jan 31st, 2025
Iter: Building A Miniature Sun On Earth

ITER, The Way To Nuclear FusionITER, an acronym for International Thermonuclear Experimental Reactor, also standing for “The Way” in Latin, is the world’s largest effort toward mastering nuclear fusion-based energy generation.ITER is funded and run by seven parties: the European Union (27 countries), China, India, Japan, Russia, South Korea, and the United States. It also has cooperation agreements with Australia, Canada, Kazakhstan and Thailand.The UK used to be part of the program when it was in the EU and discontinued its participation in 2023.In theory, ITER could be the prototype and experimental demonstrator for commercial fusion, opening mankind to virtually unlimited cheap energy.This would make tasks like greening deserts, fighting CO2 emissions, or becoming a space-faring civilization almost trivial.So, while it might take a while to bear fruit, the potential is so colossal that it might be remembered as one of the most important megaprojects ever created.Nuclear FusionUnlimited PowerNuclear fusion is different from classical nuclear energy (fission) in that it uses very light elements. Instead of splitting heavy atoms like uranium, it merges together very light atoms, generally hydrogen.This theoretically makes nuclear fusion a source of unlimited power, as hydrogen is the most common form of matter in the Universe.This process produces massive amounts of energy, resulting in 3-10x more energy than nuclear fission and the energy source powering the stars.One gram of deuterium-tritium fuel mixture in the process of nuclear fusion is equivalent to 11 tonnes of coal. Someone’s entire lifetime energy consumption could be covered by little more than a bottle of fuel held in their hand.Advantages of Nuclear FusionNot only does nuclear fusion provide a lot of energy, but it has a few key benefits that no other power source can claim:Deuterium is so abundant in the Earth’s oceans and surface waters that it is essentially unlimited and equally accessible to every nation on Earth.The nuclear reaction produces no radioactive waste, only chemically harmless helium. No CO2 or other environmentally harmful products are created by the reaction either.As it produces no enriched uranium, plutonium, or other radioactive materials, nuclear fusion does not carry a risk of nuclear proliferation (nuclear weapon-grade material). This would make the adoption of nuclear fusion a neutral technology without the restrictions imposed on fission nuclear technology.No risk of meltdown or out-of-control chain reaction