Senior Tooling Engineer

Location

El Segundo HQ

Full time

On-site

Engineering Production & Manufacturing

$133.5K - $207.9K
• Offers Equity

Radiant is seeking a highly motivated senior tooling engineer who will be working closely with design engineers and the manufacturing team to develop and innovate custom tooling to build and assemble our microreactor system. You will be part of the early team that develops production tooling for the factory that will mass produce, fuel, and refuel Kaleidos.

• 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 and fabrication.

• Bachelor’s degree from an accredited institution in mechanical, manufacturing, or a 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.

• Master’s degree from an accredited institution in mechanical, manufacturing, or a related engineering discipline.
• Proficiency with hand-calculation analytical methods and 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 and rigging.
• Strong problem‑solving skills and attention to detail.
• Demonstrated ability to work collaboratively with design and operations teams.

• Must be willing to work extended hours and weekends as necessary to achieve company goals.
• Must work 100% onsite at El Segundo HQ.

• Stock: substantial incentive stock plan for all full‑time employees.
• Medical: 100% up to base silver level plan for employee plus 50% for dependents, offering up to platinum plans.
• One Medical: sponsored memberships for employees and dependents.
• Vision: 100% top tier plan coverage plus 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.

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.

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.

Compensation Range: $133.5K - $207.9K