Lead Nuclear Reactor Operations Engineer (Onsite)

Radiant; El Segundo (CA); Hybrid; USD 180,000 - 240,000; Full time

Benefits offered by this job

Stock options

Medical benefits

One Medical

Vision coverage

Dental coverage

Flexible PTO

Onsite lunch

Team events

Job summary

Radiant, an El Segundo, CA-based startup building portable nuclear microreactors, seeks a Lead Reactor Operations Engineer to direct a team and qualify as Kaleidos Reactor Operator. You will oversee reactor operating interfaces, conduct of operations, and procedures to ensure safe, efficient, and reliable reactor operations in line with safety standards.

You will also stay hands-on, lead design reviews from an operations perspective, and recruit and mentor engineers to scale Radiant's

Qualifications

• 6+ years of full-time engineering experience with system design, analysis, or testing.
• 2+ years in a formal or informal technical leadership role.
• Familiarity with nuclear, mechanical, I&C and electrical systems as an integrated plant.
• Licensed as Senior Reactor Operator or Naval equivalent.
• Strong written and verbal communication skills.
• Background in highly regulated industries (e.g., nuclear, aerospace, aviation, maritime).
• Willingness to lead, develop teams, and stay hands-on while making risk-based decisions.

Responsibilities

• Lead and mentor a team of Reactor Operations Engineers, aligning priorities with test, commissioning, and operating milestones.
• Qualify as an operator to gain firsthand experience and ensure real-world alignment.
• Establish conduct of operations and fleet monitoring processes for Kaleidos reactors.
• Support development of control algorithms for semi-autonomous or manual operations.
• Evaluate plant response to events, accidents, and malfunctions.
• Participate in design reviews from an operations standpoint.
• Ensure all deliverables meet DOE/NRC standards and are clearly documented.
• Recruit, hire, and develop engineering talent to scale the team.

Skills

Reactor operations leadership

Nuclear plant systems knowledge

First principles thinking

Strong communication

Regulatory compliance

Hands-on leadership

Job description

Radiant, an El Segundo, CA-based startup building portable nuclear microreactors, seeks a Lead Reactor Operations Engineer to direct a team and qualify as Kaleidos Reactor Operator. You will oversee reactor operating interfaces, conduct of operations, and procedures to ensure safe, efficient, and reliable reactor operations in line with safety standards.

You will also stay hands-on, lead design reviews from an operations perspective, and recruit and mentor engineers to scale Radiant's