Radiant · 1 month ago
Senior Tooling Engineer
El Segundo, California, United States
Full-time
Onsite
Mid, Senior Level
4+ years expRadiant is an El Segundo-based startup building portable nuclear microreactors. The Senior Tooling Engineer will work closely with design engineers and the manufacturing team to develop custom tooling for the production of their microreactor system.
Clean EnergyEnergyEnergy EfficiencyRenewable Energy
No H1B
U.S. Citizen Only
Responsibilities
Partner with design and manufacturing engineers to develop innovative production tooling for fabricating and assembling complex mechanisms and structures
Design, analyze, and fabricate tooling that enables semi-remote operations for fueling/defueling of the reactor
Identify and develop appropriate suppliers for tooling components, fabrication
Qualification
Required
Bachelor's degree from an accredited institution in mechanical, manufacturing, or other related engineering discipline
4+ years of experience in mechanical tooling design and fabrication of multi-component assemblies in CAD (NX or similar)
Solid understanding of Geometric Dimensioning & Tolerancing (GD&T) with experience applying it to fabrication drawings
Preferred
Master's degree from an accredited institution in mechanical, manufacturing, or other related engineering discipline
Proficiency with both “hand calc” analytical methods and higher fidelity finite element-based analysis methods
Self-motivated with strong organizational, written, and oral communication skills
Experience with custom machine design; electromechanical systems, motors, actuators, linear rails, bearings, lifting/rigging, etc
Strong problem-solving skills and attention to detail
Demonstrated ability to work collaboratively with design and operations teams
Benefits
Stock: Substantial incentive stock plan for all full-time employees.
Medical: 100% premium coverage for base Silver level plan for employee + 50% premium coverage for dependents. Platinum plans available.
One Medical: Sponsored memberships for eligible employees and their dependents.
Vision: 100% premium coverage for top tier plan + 50% for dependents.
Dental: 100% premium coverage for top tier plan (including orthodontia) + 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.
Company
Radiant
Radiant develops portable nuclear microreactors designed to generate electricity and heat in a compact, factory-built form.
51-200 employees
Funding
Current Stage
Late StageTotal Funding
$518.82MKey Investors
Andreessen HorowitzUnion Square Ventures
2025-12-17Series D· $300M
2024-11-14Series C· $165M
2023-04-18Series B· $40M
Leadership Team
Doug Bernauer
Chief Executive Officer
Recent News
2026-01-07
The Motley Fool
2026-01-04
Globe and Mail
2026-01-03
Company data provided by crunchbase