Lead, Nuclear Criticality Safety (Nuclear Engineering)

Location: Los Angeles, California, United States

Base salary: $160,000–$230,000 annually

Company

hirify.global is developing uranium enrichment services in the United States to support nuclear fuel production for advanced reactors and critical industries.

What you will do

• Build and lead the criticality safety program for a Part 70 fuel cycle facility.
• Set the methodology, double-contingency strategy, and technical direction for the site.
• Develop criticality safety evaluations for fissile-material processes and integrate their outputs into the Integrated Safety Analysis.
• Perform analyses with computational tools such as SCALE and MCNP to assess safety and regulatory compliance.
• Act as the primary technical contact during NRC licensing interactions, license amendments, and inspections.
• Lead technical reviews, audits, inspections, training, incident investigations, and corrective actions while collaborating with engineering, operations, and regulatory teams.

Requirements

• 8+ years of nuclear criticality safety experience, including direct authorship of criticality safety evaluations at a DOE or NRC-licensed facility.
• Bachelor’s degree in Nuclear Engineering, Physics, or a related field.
• Strong knowledge of 10 CFR Part 70, the ANSI/ANS-8 series, and criticality safety methodologies.
• Proficiency with SCALE, MCNP, or similar computational tools.
• Ability to perform trade studies, make recommendations from first principles, and communicate technical information to regulators, operators, and leadership.
• Ability to obtain and maintain required security clearance and access authorization.

Nice to have

• Experience establishing or substantially revising a criticality safety program at an NRC-licensed Part 70 facility.
• DOE weapons complex or national laboratory experience, with the ability to apply it in an NRC licensing context.
• Nuclear Criticality Safety Engineer certification, PE license, or an advanced degree in Nuclear Engineering, Physics, or a related field.
• Experience working in a fast-paced, highly technical, and resource-constrained engineering environment.

Culture & Benefits

• Mission-driven work focused on nuclear fuel production and enrichment services.
• Culture of urgency, accountability, transparency, and first-principles engineering.
• Extended hours and weekends may be required when necessary.
• Full-time hires may be eligible for stock options, medical, vision, and dental coverage.
• Access to a 401(k) retirement plan.