Nuclear Safety Consequence Analyst

General Matter, Inc.; Los Angeles (CA); Hybrid; USD 150,000 - 210,000; Full time

Job summary

General Matter, Inc. in the United States seeks a Consequence Analyst to quantify radiological and chemical consequences across normal, off-normal, and accident conditions, supporting the ISA and safety license under 10 CFR Part 70.

You'll build source terms, model dispersion with HotSpot, RASCAL, MACCS, ARCON, ALOHA, and collaborate with safety, licensing, and engineering teams to drive safety controls and compliance.

Qualifications

• Bachelor's degree in Nuclear Engineering, Chemical Engineering, Health Physics, Physics, or a related field.
• Strong knowledge of consequence/accident analysis methods and radiological and/or chemical dispersion modeling.
• Proficiency in consequence modeling tools such as HotSpot, RASCAL, MACCS, ARCON, ALOHA, or similar software.

Responsibilities

• Develop consequence analyses for radiological and chemical release scenarios across normal, off-normal, and accident conditions.
• Develop and document source terms for postulated accident sequences.
• Model atmospheric dispersion and estimate downwind concentrations, doses, and exposures using codes such as HotSpot, RASCAL, MACCS, ARCON, ALOHA, or similar tools.
• Support the Integrated Safety Analysis (ISA) by characterizing consequence severity and informing the selection of safety controls under 10 CFR Part 70.
• Evaluate consequences against applicable performance requirements (e.g., 10 CFR 70.61) and dose/exposure criteria.
• Collaborate with criticality safety, fire protection, process, and licensing teams to ensure consistent accident scenario definition.
• Investigate consequence-related findings and support development of corrective actions as necessary.
• Maintain accurate analyses, assumptions, and documentation to support audits and regulatory reviews.

Skills

Engineering fundamentals

Trade studies

First principles

Analytical skills

Verbal and written communication

Team collaboration

Education

Bachelor's degree in Nuclear Engineering, Chemical Engineering, Health Physics, Physics, or related field

Tools

HotSpot

RASCAL

MACCS

ARCON

ALOHA

Job description

General Matter is enriching uranium in America.

Our goal is to design, build, andoperatethe world’s lowest-cost enrichment services in the United States.

Our mission is to restore America’s ability to produce nuclear fuel—fuel that will power AI, advanced manufacturing, critical industries, and the next generation of nuclear reactors.

Ultimately, ourwork will help power national ambitions and enable a high-energy society.

We were incubated by Founders Fund, like Anduril and Palantir before us, and are backed by top-tier investors. Our lean, world-class team of engineers and operators is applying a first-principles approach to solving the problem of nuclear fuel production.

We are a mission-driven company with a culture of urgency, accountability, and transparency.

Help us build a high-energy society by making the cleanest, safest form of baseload energy the most affordable.

About This Role

As a Nuclear Consequence Analysis Engineer at General Matter, you'll own the question at the heart of the facility's safety case: if something goes wrong, what actually happens? You'll quantify the radiological and chemical consequences of accident scenarios across the facility — building source terms, modeling dispersion, and estimating dose and exposure to workers, the public, and the environment. This is a systems-level role: your analyses define how severe each scenario is, directly driving which safety controls we credit and shaping the Integrated Safety Analysis (ISA) that underpins our 10 CFR Part 70 license. Many of the tools of this trade — MACCS and HotSpot among them — were built for DOE safety analysis under DOE-STD-3009, and the underlying consequence methodology carries over cleanly to the NRC's 10 CFR 70.61 performance requirements. If you've done this work at a DOE site or national lab, you're already speaking our language.

Responsibilities

• Develop consequence analyses for radiological and chemical release scenarios across normal, off-normal, and accident conditions.
• Develop and document source terms for postulated accident sequences.
• Model atmospheric dispersion and estimate downwind concentrations, doses, and exposures using codes such as HotSpot, RASCAL, MACCS, ARCON, ALOHA, or similar tools.
• Support the Integrated Safety Analysis (ISA) by characterizing consequence severity and informing the selection of safety controls under 10 CFR Part 70.
• Evaluate consequences against applicable performance requirements (e.g., 10 CFR 70.61) and dose/exposure criteria.
• Collaborate with criticality safety, fire protection, process, and licensing teams to ensure consistent accident scenario definition.
• Investigate consequence-related findings and support development of corrective actions as necessary.
• Maintain accurate analyses, assumptions, and documentation to support audits and regulatory reviews.

Basic Qualifications

• Strong understanding of engineering fundamentals.
• Ability to perform trade studies and make clear recommendations using first principles and engineering fundamentals even with partial information.
• Bachelor's degree in Nuclear Engineering, Chemical Engineering, Health Physics, Physics, or a related field.
• Strong knowledge of consequence/accident analysis methods and radiological and/or chemical dispersion modeling.
• Proficiency in consequence modeling tools such as HotSpot, RASCAL, MACCS, ARCON, ALOHA, or similar software.
• Excellent analytical and problem-solving skills.
• Strong verbal and written communication skills, with the ability to convey technical information to diverse audiences.
• Ability to work collaboratively in a team-oriented environment.

Preferred Skills and Experience

• Evidence of exceptional ability (prior projects, portfolio of work, completed products, etc).
• Experience in a fast-paced engineering environment or a highly technical role requiring a resourceful, entrepreneurial approach to complete tasks within tight timeframes or budget constraints.
• Experience supporting an Integrated Safety Analysis (ISA) or license application for a nuclear fuel cycle facility.
• Experience developing DOE-STD-3009 safety analysis reports or consequence analyses at a DOE facility or national lab — this experience, and familiarity with tools like MACCS and HotSpot, transfers directly to NRC consequence work under 10 CFR 70.61
• Experience with chemical process hazard analysis and toxicological consequence assessment.
• Advanced degrees.
• Certified Health Physicist (CHP) or Professional Engineer (PE) license is preferred or the ability to obtain one.

Additional Requirements

• Ability to work extended hours and weekends as necessary.

Equal Opportunity Employer

General Matter is an Equal Opportunity Employer; employment with General Matter is governed on the basis of merit, competence and qualifications and will not be influenced in any manner by race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability or any other legally protected status.

Compensation and Benefits

The base salary range for this role is $150,000–$210,000 annually.

Compensation bands are determined by role, level, location, and alignment with market data. Individual level and base pay is determined on a case-by-case basis and may vary based on job-related skills, education, experience, technical capabilities and internal equity. Please note that the stated salary range is an estimate and may be adjusted based on market conditions, business needs, or other factors. In addition to base salary, for full-time hires, you may also be eligible for long-term incentives, in the form of stock options, and access to medical, vision & dental coverage as well as access to a 401(k) retirement plan.

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