Senior Reactor Systems Engineer (Nuclear)

TL;DR

Senior Reactor Systems Engineer (Nuclear): Designing and implementing mission-critical operational procedures for portable nuclear microreactors with an accent on bridging engineering, operations, and human factors. Focus on translating complex hardware and software designs into DOE/NRC compliant procedures and optimizing operator interfaces.

Location: Must work 100% onsite in El Segundo, CA. No visa sponsorship provided; must be compliant with U.S. export controls.

Salary: $133.5K – $184.8K + Equity

Company

A startup building the world’s first mass-produced, portable nuclear microreactors for critical asset support.

What you will do

• Design and implement mission-critical procedures for reactor operators managing nuclear microreactor technology.
• Qualify as an operator to gain firsthand experience and ensure procedures align with real-world execution.
• Collaborate with engineers to improve operator interfaces, procedural workflows, and software tools.
• Support the testing and iterative improvement of digital twin scenarios and human-machine interfaces.
• Ensure strict compliance with DOE and NRC standards regarding formatting and usability of documentation.
• Develop operational procedures integrating software and hardware-in-the-loop testing.

Requirements

• 4+ years of professional engineering experience in system design, analysis, or testing.
• Background in highly regulated industries such as nuclear, aerospace, aviation, or maritime.
• Proficiency in managing or optimizing complex hardware and software processes for testing and operations.
• Ability to apply first principles thinking to solve problems in ambiguous situations.
• Must be based in the US and able to work 100% onsite in El Segundo, CA.
• Must be eligible to work under U.S. export controls (no visa sponsorship).

Nice to have

• Prior experience as a licensed Senior Reactor Operator (SRO) or Naval equivalent.
• 2+ years of full-time nuclear operations experience.
• Proficiency in Python and UNIX for procedure testing within simulator environments.
• Experience with human factors engineering and user-centered instructions for operational workflows.

Culture & Benefits

• Substantial incentive stock plan for all full-time employees.
• Comprehensive health, vision, and dental insurance with significant company coverage.
• Daily catered lunch, free snacks, and drinks.
• Flexible PTO policy and 8 weeks of paid parental leave.
• Sponsored One Medical memberships for employees and dependents.