Core Design Engineer (Nuclear Engineering)

Location: Remote within the United States, with travel to the Santa Clara, CA headquarters twice per quarter and in-person onboarding for the first two weeks. Applicants must meet the definition of a U.S. person under applicable export control laws.

Salary: $130,000–$190,000 per year

Company

hirify.global is developing fast fission power plants, nuclear fuel recycling technologies, and domestic supply chains for critical radioisotopes.

What you will do

• Design performant and manufacturable reactor cores while balancing neutronic, thermal hydraulic, material, mechanical, and economic considerations.
• Model core performance over time using multiphysics simulations and first-principles approaches.
• Translate stakeholder requirements into clear system functional requirements.
• Perform analyses to validate and verify core requirements and provide technical feedback to methods development teams.
• Prepare technical reports and design documentation using modern tools and techniques.
• Collaborate with fabrication engineers and cross-functional teams to mature reactor core designs.

Requirements

• Bachelor’s, master’s, or PhD in nuclear engineering or a related field.
• Experience with multidisciplinary reactor core design.
• Experience with an object-oriented programming language such as Python or C++.
• Experience with neutronic, thermal hydraulic, and material analyses.
• Strong technical writing and verbal communication skills.
• Eligibility as a U.S. person may be required because of U.S. export control laws.

Nice to have

• Knowledge of fast reactor core design, fuel cycle optimization, ternary fuels, or ternary fuel cycles.
• Experience with CI/CD computing environments.
• Experience with Monte Carlo or deterministic neutronics tools.
• Experience with reactor systems codes, fuel analysis, or fuel performance software.
• Fluency in Python.

Culture & Benefits

• Startup environment focused on advanced fission and clean energy.
• Collaborative, ownership-oriented culture with an emphasis on creativity, humility, and pathfinding.
• Flexible time off, flexible work hours, wellness credits, and regular remote work.
• Equity, bonuses, competitive pay, 401(k), health insurance with employer contribution, HSA, and FSA.
• Remote employees travel to headquarters twice per quarter for meetings, off-sites, or other business gatherings.

Hiring process

• Employment may be contingent on successfully completing a drug screening.
• Employees may be subject to drug testing in accordance with company policy and applicable laws.