Criticality Safety Engineer, Fuel

Location: Bellevue, Washington, United States

Salary: $131,828–$171,205 per year

Company

hirify.global is a nuclear technology company developing advanced nuclear reactors, nuclear fuel systems, and medical isotope applications.

What you will do

• Develop nuclear criticality safety evaluations for Natrium fuel fabrication, fresh fuel receipt, storage, handling, inspection, and transportation.
• Perform criticality safety calculations using Monte Carlo neutron transport tools such as SCALE/KENO and MCNP.
• Establish engineered and administrative controls for normal, abnormal, and credible accident conditions.
• Develop Criticality Safety Evaluations, Criticality Safety Limits, technical reports, regulatory responses, and supporting documentation.
• Support facility and process design reviews, engineering change evaluations, licensing activities, operating procedures, training materials, and readiness reviews.
• Coordinate with fuel vendors and transportation organizations and participate in hazard analyses, audits, and technical assessments.

Requirements

• Bachelor’s degree in Nuclear Engineering or a closely related engineering discipline.
• At least 5 years of experience in nuclear criticality safety, reactor physics, fuel cycle engineering, or a related nuclear engineering field.
• Experience performing criticality safety analyses with Monte Carlo neutron transport methods, including knowledge of nuclear cross-section libraries and uncertainty methodologies.
• Knowledge of NRC regulations applicable to criticality safety and fuel handling, plus experience preparing technical reports and engineering calculations.
• Strong written and verbal communication skills, attention to detail, ability to work independently, and ability to manage multiple concurrent tasks.
• Applicants are subject to U.S. Government export-control review; foreign nationals may require export authorization.

Nice to have

• Experience with advanced reactors, sodium-cooled fast reactors, fuel cycle facilities, HALEU fuel systems, or fast-spectrum criticality methodology.
• Proficiency with SCALE, MCNP, Serpent, or comparable neutron transport software.
• Familiarity with ANSI/ANS-8, NQA-1, QL-1, DOE, and NRC standards and regulations.
• Experience with nuclear industry manufacturing and operations and a strong understanding of nuclear safety culture.

Culture & Benefits

• Full-time employment with competitive compensation and eligibility for discretionary short-term incentive payments.
• Medical, vision, dental, life, disability, and wellness benefits.
• Parental leave, 21 accrued PTO days annually, and 10 paid holidays.
• 401(k) plan and professional and educational support opportunities.
• Relocation assistance is available.
• Travel requirement is 0–10%; the role involves extended sitting, prolonged repetitive work, stairs, typing, and the ability to safely lift up to 25 pounds.