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Lead Reactor Operations Engineer

Lead a team of Reactor Operations Engineers to ensure safe and efficient operations of portable nuclear microreactors.

Location
El Segundo, CA
Compensation
Not disclosed
Level
lead
Type
full time · On-site

Posted by employer 1 month ago

First seen on Joblaze 1 month ago

Last verified on the company career page 16 hours ago

Apply at Radiant → Save job Scanned from radiantnuclear.com

What you'll build

  • Lead a team of Reactor Operations Engineers
  • Establish conduct of operations for Kaleidos reactors
  • Support development of control algorithms
  • Participate in design reviews
  • Ensure team deliverables meet DOE and NRC standards

Must have

  • 6+ years of full-time professional engineering experience
  • 2+ years in a technical leadership role
  • Licensed as Senior Reactor Operator or Naval equivalent
  • Excellent written and verbal communication skills
  • Background in highly regulated industries

Nice to have

  • 3+ years of full-time nuclear operations experience
  • Prior experience working as an operator in nuclear environments
  • Hands-on experience in developing technical procedures
  • Prior operations background such as mission control room operator

Practical constraints

  • Must work 100% onsite at El Segundo HQ
  • Willingness to travel 50% - 60% of the time

Requirements

Experience
6+ years

Not disclosed in this posting: compensation, visa sponsorship.

Benefits

Flexible PTO Equity/Stock Options Remote Work Health Insurance Parental Leave

Joblaze insights

  • Listed about a month ago — first seen on Joblaze September 17, 2026. Last confirmed on Radiant's careers page November 6, 2026.

Quick facts

Is the Lead Reactor Operations Engineer role remote?
No — this is an on-site role in El Segundo, CA.
How much experience is required?
At least 6 years of relevant experience for this Lead Reactor Operations Engineer role.
Where is the role based?
Radiant is hiring for this position in El Segundo, CA.
What seniority level is this role?
Radiant targets lead candidates for this position.
Is this full-time or contract?
Full-time for this Lead Reactor Operations Engineer role at Radiant.

From the original posting

As the Lead Reactor Operations Engineer, you will direct the team providing operational insights to ensure the development of Kaleidos and its functionality meet the requirements for safe, efficient, and reliable reactor operations and commissioning. This position will oversee and approve the development of reactor operating interfaces, conduct of operations, and procedures. You will also go one step further and qualify as a Kaleidos Reactor Operator yourself – always remaining technically hands on.

Responsibilities & Duties:

  • Lead, mentor, and grow a team of Reactor Operations Engineers, setting technical priorities aligned with test, commissioning, and operational milestones.

  • Qualify as an operator to gain firsthand experience and ensure the team's work aligns with real-world execution.

  • Establish the conduct of operations and fleet monitoring processes for Kaleidos reactors.

  • Support development of control algorithms for semi-autonomous and/or manual operations.

  • Support the evaluation of integrated plant response to various events, accidents, and malfunctions.

  • Participate in design reviews and provide feedback from an operations and maintenance perspective.

  • Ensure all team deliverables meet DOE and NRC standards, maintaining strict formatting, clarity, and usability in procedural documentation.

  • Recruit, hire, and develop engineering talent to scale the team with Radiant's growth.

Required Qualifications & Skills:

  • 6+ years of full-time professional engineering experience, including system design, analysis, or testing, with 2+ years in a formal or informal technical leadership role.

  • Familiarity with the interrelationships and dependencies of reactor systems, encompassing nuclear, mechanical, I&C and electrical systems - and their response as an integrated power plant system.

  • Licensed as Senior Reactor Operator or Naval equivalent.

  • Ability to apply first principles thinking to solve problems and make decisions in uncertain or ambiguous situations.

  • Excellent written and verbal communication skills.

  • Background in highly regulated industries (e.g., nuclear, aerospace, aviation, maritime).

  • Demonstrated ability to lead and develop technical teams, managing and making decisions on risk, while remaining hands-on.

Desired Qualifications & Skills:

  • Prior experience working as an operator in nuclear environments (e.g., nuclear energy, naval reactors, or radiation-controlled facilities), with familiarity in safety protocols, regulatory compliance, and high-reliability operations.

  • 3+ years of full-time nuclear operations experience.

  • Licensed as Senior Reactor Operator or Naval equivalent.

  • Hands-on experience in developing technical procedures, human factors engineering, or operational interface design.

  • Prior operations background such as mission control room operator.

Additional Requirements:

  • Must be willing to work extended hours and weekends as necessary to accomplish our mission.

  • Willingness to travel 50% - 60% of the time, as needed for projects.

Benefits and Perks

  • Stock: Substantial incentive stock plan for all full-time employees.

  • Daily catered lunch. Free snacks and drinks.

  • Flexible PTO policy. Remote workday allocation.

Standard company text repeated across Radiant's postings is omitted here.

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