Principal Nuclear Materials Engineer at Helion in Everett, WA | USD200,000-275,000 | Kablio

Role

Description

radiation modeling

lit review

design advisory

testing oversight

risk management

technical collaboration

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
Operate in an environment with obstacles and changing requirements. Balance risks without compromising the delivery
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
Lead strategic projects to expand capabilities
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
Oversee testing campaigns to quantify impact of radiation on material properties

Requirements

python

matlab

c++

nuclear eng

neutron

corrosion

Data presentation should include rigorous consideration of uncertainty and statistics
A professional understanding of radiation effects on materials, typically demonstrated by a degree in nuclear engineering, materials science, physics, or related discipline and 15+ years of hands-on work
8+ years of experience performing data analysis with a common coding language (Python, MATLAB, C++), data presentation, technical communication, and writing
8+ years of experience working on neutron interactions leading to e.g., material transmutation or helium bubble generation
8+ years of experience working on non-aqueous corrosion and environmentally assisted degradation mechanisms (e.g., stress corrosion cracking, creep, accelerated fatigue)
15+ years of experience handling radioactive material

Benefits

Paid parental leave and support (up to 16 weeks)
31 Days of PTO (21 vacation days and 10 sick days)
Short term disability, long term disability, and life insurance
Medical, Dental, and Vision plans for employees and their families
10 Paid holidays, plus company-wide winter break
Up to 5% employer 401(k) match
Annual wellness stipend

Training + Development

Information not given or found

Interview process

Information not given or found

Visa Sponsorship

Information not given or found

Security clearance

Information not given or found

Company

Overview

100M °C

Plasma Temperature

Achieved a plasma temperature of 100 million degrees Celsius, a critical milestone in fusion energy.

$1B

VC Funding

Received over $1 billion in venture capital funding to support their fusion energy research and development.

$5B

Valuation

Valued at over $5 billion in their Series F funding round, reflecting strong investor confidence in their fusion technology.

50 MW

Power Plant

Aiming to deliver a 50 MW fusion-generated electricity plant by 2028, marking a significant step toward commercial fusion energy.

Pursues a bold vision: taming the power of stars on Earth through fusion energy.
Develops magneto-inertial fusion technology, merging plasma at extreme speeds and capturing energy directly.
Pioneers in aneutronic fusion, recycling byproducts to generate helium-3, a sustainable fuel source.
Shifts from lab-scale to industrial-scale fusion with the Polaris device, supported by legal agreements.
Aims for rapid iteration with reactor designs capable of one pulse per second, enabling modular fusion systems.

Culture + Values

Build with urgency
Take ownership
Execute rigorously
Deliver hard truths

Environment + Sustainability

$500M in 2021

Investment Figure

Raised $500 million in 2021 to accelerate the development of their net-electricity target device, Polaris.

100M°C

Plasma Temperature Achievement

Achieved a milestone by heating plasma to 100 million degrees Celsius in June 2021.

500 MWe

Fusion Plant Capacity

Partnered with Nucor to deploy a 500 MWe fusion plant, enabling zero-carbon baseload power for steelmaking.

Committed to generating zero‑carbon electricity from fusion
Pulsed non‑ignition fusion approach avoids steam turbines and cooling towers by direct electricity capture
Supporting right‑sized regulation to enable safe and rapid fusion deployment
Applied for nitrogen‑based fire suppression and borated‑polyethylene shielding for safety and environmental protection

Inclusion & Diversity

3.4/5 Rating

Glassdoor Employee Reviews

Reveals the company's inclusion and diversity initiatives based on employee feedback on Glassdoor.

4.4/5 for Men

Employee Inclusion Score

Indicates the level of inclusivity experienced by male employees.

4.7/5 for Non-disabled

Employee Inclusion Score

Reflects the high level of inclusivity experienced by non-disabled employees.

4.7/5 for Non-veterans

Employee Inclusion Score

Showcases the inclusive environment for employees who are not veterans.

Articles

Helion announces world’s first fusion energy purchase agreement with Microsoft

Helion Energy Breaks Ground on Site of Its Next‑Generation Fusion Facility in Everett, Washington

Helion | Building the world's first fusion power plant

Role

Description

radiation modeling

lit review

design advisory

testing oversight

risk management

technical collaboration

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
Operate in an environment with obstacles and changing requirements. Balance risks without compromising the delivery
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
Lead strategic projects to expand capabilities
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
Oversee testing campaigns to quantify impact of radiation on material properties

Requirements

python

matlab

c++

nuclear eng

neutron

corrosion

Data presentation should include rigorous consideration of uncertainty and statistics
A professional understanding of radiation effects on materials, typically demonstrated by a degree in nuclear engineering, materials science, physics, or related discipline and 15+ years of hands-on work
8+ years of experience performing data analysis with a common coding language (Python, MATLAB, C++), data presentation, technical communication, and writing
8+ years of experience working on neutron interactions leading to e.g., material transmutation or helium bubble generation
8+ years of experience working on non-aqueous corrosion and environmentally assisted degradation mechanisms (e.g., stress corrosion cracking, creep, accelerated fatigue)
15+ years of experience handling radioactive material

Benefits

Paid parental leave and support (up to 16 weeks)
31 Days of PTO (21 vacation days and 10 sick days)
Short term disability, long term disability, and life insurance
Medical, Dental, and Vision plans for employees and their families
10 Paid holidays, plus company-wide winter break
Up to 5% employer 401(k) match
Annual wellness stipend

Training + Development

Information not given or found

Interview process

Information not given or found

Visa Sponsorship

Information not given or found

Security clearance

Information not given or found

Company

Overview

100M °C

Plasma Temperature

Achieved a plasma temperature of 100 million degrees Celsius, a critical milestone in fusion energy.

$1B

VC Funding

Received over $1 billion in venture capital funding to support their fusion energy research and development.

$5B

Valuation

Valued at over $5 billion in their Series F funding round, reflecting strong investor confidence in their fusion technology.

50 MW

Power Plant

Aiming to deliver a 50 MW fusion-generated electricity plant by 2028, marking a significant step toward commercial fusion energy.

Pursues a bold vision: taming the power of stars on Earth through fusion energy.
Develops magneto-inertial fusion technology, merging plasma at extreme speeds and capturing energy directly.
Pioneers in aneutronic fusion, recycling byproducts to generate helium-3, a sustainable fuel source.
Shifts from lab-scale to industrial-scale fusion with the Polaris device, supported by legal agreements.
Aims for rapid iteration with reactor designs capable of one pulse per second, enabling modular fusion systems.

Culture + Values

Build with urgency
Take ownership
Execute rigorously
Deliver hard truths

Environment + Sustainability

$500M in 2021

Investment Figure

Raised $500 million in 2021 to accelerate the development of their net-electricity target device, Polaris.

100M°C

Plasma Temperature Achievement

Achieved a milestone by heating plasma to 100 million degrees Celsius in June 2021.

500 MWe

Fusion Plant Capacity

Partnered with Nucor to deploy a 500 MWe fusion plant, enabling zero-carbon baseload power for steelmaking.

Committed to generating zero‑carbon electricity from fusion
Pulsed non‑ignition fusion approach avoids steam turbines and cooling towers by direct electricity capture
Supporting right‑sized regulation to enable safe and rapid fusion deployment
Applied for nitrogen‑based fire suppression and borated‑polyethylene shielding for safety and environmental protection

Inclusion & Diversity

3.4/5 Rating

Glassdoor Employee Reviews

Reveals the company's inclusion and diversity initiatives based on employee feedback on Glassdoor.

4.4/5 for Men

Employee Inclusion Score

Indicates the level of inclusivity experienced by male employees.

4.7/5 for Non-disabled

Employee Inclusion Score

Reflects the high level of inclusivity experienced by non-disabled employees.

4.7/5 for Non-veterans

Employee Inclusion Score

Showcases the inclusive environment for employees who are not veterans.

Articles

Helion announces world’s first fusion energy purchase agreement with Microsoft

Helion Energy Breaks Ground on Site of Its Next‑Generation Fusion Facility in Everett, Washington

Helion | Building the world's first fusion power plant