Engineer I–III, Thermal-Hydraulic Safety Analysis & V&V (Nuclear)

Location: Gaithersburg, Maryland, United States; 4 days onsite per week

Salary: $85,000–$135,000 annually, depending on level and qualifications.

Company

hirify.global develops nuclear reactor technology, including the Xe-100 high-temperature gas-cooled reactor and its TRISO fuel safety case.

What you will do

• Perform thermo-hydraulic transient and accident analyses for AOOs, DBEs, DBAs, and BDBEs using approved system codes and methodologies.
• Evaluate core heat removal, coolant flow, heat transfer, temperature distributions, cooling capability, and defense-in-depth.
• Support SSC safety classifications, safety functions, thermal-hydraulic safety limits, margins, and acceptance criteria.
• Develop PIRTs and scaling analyses and assess the applicability of experimental data and analytical methods to the Xe-100 design.
• Support V&V and software validation activities for thermo-hydraulic analysis codes.
• Prepare technical documentation for regulatory submittals, topical reports, safety analysis reports, code applicability reports, and NRC requests for additional information.

Requirements

• Bachelor’s degree in nuclear, chemical, mechanical, or another relevant engineering discipline from an accredited institution.
• Level I: typically 0–2 years of engineering experience; Level II: typically 3 years; Level III: typically 5 years.
• Academic or professional exposure to thermo-hydraulics, heat transfer, fluid mechanics, or reactor systems analysis.
• Ability to apply NRC regulatory guidance, including RG 1.203, and follow hirify.global procedures for safety-related calculations.
• Ability to collaborate with neutronics, structural, materials, and reactor systems engineering teams.
• Availability to work onsite four days per week in Gaithersburg, Maryland, during 8:00 a.m.–5:00 p.m. Monday–Friday hours.

Nice to have

• Familiarity with RELAP, TRACE, GOTHIC, Flownex, or similar thermal-hydraulic system codes.
• Experience with V&V or Commercial Grade Dedication activities.
• Master’s or Ph.D. in engineering or a related field.

Culture & Benefits

• Full-time, exempt employment with approximately 10% travel.
• Work governed by NQA-1 quality assurance requirements and hirify.global procedures.
• 401(k) plan with employer match.
• Medical, dental, vision, life, and disability insurance.
• Paid time off, tuition reimbursement, and professional development support.