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Director, Nuclear Engineering

Lead a team of nuclear engineers in designing and analyzing portable nuclear microreactors at a startup focused on innovative energy solutions.

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

Posted by employer 2 months ago

First seen on Joblaze 1 month ago

Last verified on the company career page 1 day ago

Apply at Radiant → Save job Scanned from radiantnuclear.com

Requirements

Experience
10+ years
Education
Bachelor's degree

Not disclosed in this posting: compensation, visa sponsorship.

Benefits

Catered Lunch Flexible PTO Snacks and Drinks Equity/Stock Options Remote Work Health Insurance Parental Leave

Joblaze summary

The Director of Nuclear Engineering at Radiant leads a team focused on the design and analysis of portable nuclear microreactors, ensuring efficient execution of projects while navigating technical and regulatory challenges. This role requires a deep understanding of nuclear engineering principles and experience with reactor design, particularly in managing multidisciplinary teams. Ideal candidates will have over a decade of relevant experience and a strong background in safety regulations. Radiant, a startup in the nuclear sector, emphasizes innovation and collaboration as it prepares for its first reactor tests.

Joblaze insights

  • Listed about a month ago — first seen on Joblaze September 3, 2026. Last confirmed on Radiant's careers page October 31, 2026.
  • MCNP appears in 0.7% of 151 comparable director other roles in United States; OpenMC appears in 0.7% of 151 comparable director other roles in United States.

Quick facts

Is the Director, Nuclear Engineering role remote?
No — this is an on-site role in El Segundo, CA.
How much experience is required?
At least 10 years of relevant experience for this Director, Nuclear Engineering role.
Where is the role based?
Radiant is hiring for this position in El Segundo, CA.
What's the tech stack?
Joblaze extracted these technologies from the posting: MCNP, Monte Carlo neutron transport, Nuclear Engineering, OpenMC, Serpent.
What seniority level is this role?
Radiant targets director candidates for this position.
Is this full-time or contract?
Full-time for this Director, Nuclear Engineering role at Radiant.

From the original posting

Radiant is seeking a highly motivated Director, Nuclear Engineering to organize nuclear design and analysis strategy spanning the design, operation, and iteration of our microreactor fleet.

Responsibilities & Duties:

  • Lead and grow a team of nuclear engineers spanning core physics, shielding performance, dose and consequence analysis, and nuclear instrumentation domains

  • Manage team execution to efficiently deliver against the strategy, remove roadblocks, and adapt to shifting priorities

  • Identify, manage, and effectively communicate technical, schedule, and regulatory risks

  • Develop and standardize analysis roadmaps to enable fast iteration across multiple reactor programs

  • Foster an attitude of ownership and mentorship within the team

  • Define the approach to nuclear engineering design margins and methodical peer reviews

  • Interact with universities, national labs, and other outside entities as necessary to accomplish key objectives

Required Qualifications & Skills:

  • Hold a degree in nuclear engineering, physics, or engineering physics from an accredited institution

  • Minimum 10 years of experience managing a team in reactor design and analysis

  • Fluency in engineering first principles across nuclear, thermal, electrical, and mechanical domains

  • Excellence in communicating nuclear engineering concepts to a multidisciplinary audience

  • Familiarity with DOE authorization and/or NRC requirements and processes, and demonstrated experience with the development of nuclear facility safety bases

  • Must be willing to relocate to Radiant’s El Segundo office

  • Experience with Monte Carlo neutron transport codes, including OpenMC, Serpent, or MCNP

Desired Qualifications & Skills:

  • Hands-on experience designing products, hardware, or tests

Additional Requirements:

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

  • Must work 100% onsite at El Segundo HQ

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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