Nuclear Criticality Safety (NCS) Engineer

About the role

General Matter is enriching uranium in America. Our goal is to design, build, and operate the 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, our work 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 We are seeking a skilled Nuclear Criticality Safety Engineer to join our team and play a critical role in ensuring the safe and effective handling of nuclear materials. You will be part of the team responsible for developing, implementing, and maintaining a criticality safety program to ensure compliance with regulatory requirements and industry standards. You will conduct evaluations, perform risk assessments, and provide technical expertise to support safe operations within a nuclear fuel cycle facility.

Responsibilities

• Develop and maintain nuclear criticality safety evaluations (CSEs) for processes involving fissile materials.
• Perform criticality safety analyses, utilizing computational methods and tools (e.g., SCALE, MCNP) to assess system safety and compliance.
• Ensure compliance with NRC, DOE, and ANSI/ANS criticality safety standards and regulations.
• Conduct audits, inspections, and reviews of facility operations to identify and mitigate criticality safety risks.
• Collaborate with engineering, operations, and regulatory teams to implement effective safety measures.
• Provide technical guidance and training to personnel on criticality safety principles and procedures.
• Investigate criticality safety incidents and develop corrective actions as necessary.
• Maintain accurate documentation and records to support audits and regulatory reviews.

Requirements

• 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, Physics, or a related field.
• Strong knowledge of criticality safety regulations, standards, and methodologies (e.g., 10 CFR Part 70, ANSI/ANS-8 series).
• Proficiency in computational tools such as SCALE, MCNP, 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.
• Certification as a Nuclear Criticality Safety Engineer (e.g., ANSI/ANS-8.24).
• Advanced degrees.
• 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
• Compensation and Benefits
• The base salary range for this role is $80,000-$170,000 annually.

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