Let’s get started
By clicking ‘Next’, I agree to the Terms of Service
and Privacy Policy, and consent to receive emails from Rise
Jobs / Job page
Lead Nuclear Engineer image - Rise Careers
Job details

Lead Nuclear Engineer

Lead Nuclear Engineer

Radiant is seeking a technical and people-oriented leader for our nuclear design and analysis group focused in areas such as core physics, shielding, instrumentation & controls, and reactor operations. You will lead a high-performing team through the design, development, and test stages of the Kaleidos microreactor. You will own the schedule, budget, hiring, and execution of nuclear-related milestones with a key focus on safety, reliability, portability, and performance. The ideal candidate is comfortable in interdisciplinary environments working cross-functionally with engineers and leadership, is fluent in engineering first principles, has tenacious creative problem-solving abilities and keen to get to the solution of a problem, and loves to mentor and motivate engineers to deliver their best work. You will play a critical role in driving the first portable nuclear microreactor to market.

Responsibilities and Duties:

  • Manage an interdisciplinary team of nuclear engineers focused in areas such as safety analyses, core performance, shielding – including operational dose, activation, shutdown dose – I&C, operations, thermal-hydraulics and more.

  • Hire, lead, and grow a high performing team of nuclear engineers.

  • Own nuclear engineering projects end to end including requirement capture, multi-disciplinary design iteration, simulation pipeline development, analysis post-processing, and summarization for regulatory deliverables.

  • Collaborate with regulatory team on nuclear industry standards and requirements.

  • Mentor engineers through actionable feedback and coaching.

Required Qualifications and Skills:

  • Bachelor’s degree in nuclear engineering or equivalent degree from accredited institution.

  • 5+ years nuclear engineering industry experience with relevant software use, including MCNP and/or OpenMC.

  • Deep knowledge of neutron transport and Monte Carlo simulation theory.

  • 1+ year managing direct reports.

Desired Qualifications and Skills:

  • Master’s or PhD in nuclear engineering or equivalent degree from accredited institution.

  • Subject matter expert in one of following areas: safety analysis, shielding, instrumentation and controls, reactor operations, and/or radioactive material transportation.

  • Hands-on experience designing hardware and/or performing tests.

  • Experience with High-Performance Computing.

  • High-level understanding of government regulatory requirements and engineering practices required to build a safe, reliable reactor.

  • Self-starter and autonomous in planning, scheduling, and leading teams to execute on milestones on time.

  • Experienced leading teams in fast-paced environments, complex technical environment.

  • Expert communicator up and down the chain and effectively acts as a technical advisor.

  • Ability to make sound judgement calls based on company priorities and resources.

  • Tenacious in finding creative solutions to complex problems.

Benefits and Perks

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

  • Medical: 100% up to base silver level plan for employee + 50% dependents, offers up to Platinum plans.

  • One Medical: Sponsored memberships for employees and their dependents.

  • Vision: 100% top tier plan coverage + 50% for dependents.

  • Dental: 100% top tier plan coverage, orthodontia extra, 50% for dependents.

  • Voluntary life, accident, hospital, critical illness, commuter and FSA/HSA are offered as employee contributed benefits.

  • 8-weeks of paid parental leave for all parents. Additional paid pregnancy leave for CA employees.

  • Daily catered lunch. Free snacks and drinks.

  • Flexible PTO policy. Remote workday allocation.

  • Company and team-bonding events, happy hours and in-person camaraderie.

  • Beautiful El Segundo headquarters close to the Pacific Ocean.

Total Compensation and Benefits
Radiant compensates people for impact and invests in those who continue to raise the bar. Radiant’s new hire compensation package includes base salary, substantial equity grants, and comprehensive health benefits. Total compensation and level are determined through a rigorous evaluation of interview performance, experience, education, and qualifications, and are designed to support continued growth as scope, responsibility, and impact expand at Radiant.

The best of today’s advanced reactor builders don’t wait for job postings. They join the winning team. If that’s you, contact us directly for immediate opportunities: recruiting@radiantnuclear.com.

We are an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity or expression, pregnancy, age, national origin, disability status, genetic information, protected veteran status, or any other characteristic protected by law.

Unfortunately, we are unable to provide visa sponsorship at this time.

This position involves access to technology that is subject to U.S. export controls. Any job offer made will be contingent upon the applicant’s capacity to serve in compliance with U.S. export controls.

Average salary estimate

$195000 / YEARLY (est.)
min
max
$160000K
$230000K

If an employer mentions a salary or salary range on their job, we display it as an "Employer Estimate". If a job has no salary data, Rise displays an estimate if available.

Similar Jobs
Photo of the Rise User

Working Families Party is hiring a hands-on Director of Engineering to lead a small team, maintain reliable data infrastructure, and build staff-facing features that support organizing and campaigns.

Photo of the Rise User
AbbVie Hybrid Tempe, AZ, USA
Posted 14 hours ago

An engineering role at AbbVie responsible for independently designing, testing, and improving products and processes while coordinating resources and mentoring technicians within a regulated healthcare environment.

Launch your engineering career at Rolls‑Royce as an entry-level Control Systems Engineer working on power and propulsion control systems in Indianapolis.

Mach Industries is hiring a Propulsion Performance Engineer to analyze and design rotating and stationary turbine components, guiding structural capability, testing, and rapid iteration for production-grade small turbine engines.

Posted 11 hours ago

Applied Research Associate Engineer to conduct field-based erosion, sediment and stormwater research, perform water-quality sampling and analysis, and support HEC-RAS modeling and engineering design at OSU's Wooster facility.

Photo of the Rise User
Posted 11 hours ago
Inclusive & Diverse
Rise from Within
Mission Driven
Diversity of Opinions
Work/Life Harmony
Growth & Learning
Transparent & Candid
Customer-Centric
Snacks
Onsite Gym
Family Coverage (Insurance)
Medical Insurance
Dental Insurance
Vision Insurance
Mental Health Resources
Life insurance
Disability Insurance
Health Savings Account (HSA)
Flexible Spending Account (FSA)
Learning & Development
Paid Time-Off
401K Matching
Maternity Leave
Paternity Leave

Drive process integration and technology transfer at Intel Foundry to turn development innovations into reliable, high-volume semiconductor manufacturing solutions.

Photo of the Rise User

ACCIONA seeks a Construction Engineering Coordinator to coordinate temporary and permanent works engineering, manage RFIs/submittals, and support field constructability for the SR400 Express Lanes Project in Georgia.

Project Engineer needed to support large-engine electrical systems as a manufacturing liaison focused on build issue resolution, quality improvements, and traceability enhancements.

Experienced or entry-level field engineer for Western outage projects responsible for project execution oversight, client communication, safety compliance, and hands-on field support while traveling most of the year.

Photo of the Rise User
City and County of San Francisco Hybrid 1 Dr Carlton B Goodlett Pl, San Francisco, CA 94102, USA
Posted 14 hours ago

City and County of San Francisco seeks an Assistant Engineer (Mechanical) to perform field and office engineering duties supporting municipal design, inspection, and project documentation.

Photo of the Rise User
Posted 3 hours ago

Crusoe is hiring a Senior Manager, Controls Deployment to lead engineering teams deploying high-density EPMS and BMS infrastructure across multi-region construction sites.

Photo of the Rise User
Posted 10 hours ago

IAV Automotive Engineering is hiring a Junior Test Engineer to support emissions testing, vehicle prep, and data validation for powertrain and OBD calibration projects.

Posted 17 hours ago

SeaWorld San Diego is hiring a Design & Engineering Summer Intern to assist with drafting, document control, project coordination, and procurement while gaining practical engineering and construction-related experience.

MATCH
Calculating your matching score...
FUNDING
DEPARTMENTS
SENIORITY LEVEL REQUIREMENT
TEAM SIZE
No info
HQ LOCATION
No info
EMPLOYMENT TYPE
Full-time, hybrid
DATE POSTED
April 4, 2026
Risa star 🔮 Hi, I'm Risa! Your AI
Career Copilot
Want to see a list of jobs tailored to
you, just ask me below!