Senior Manufacturing Engineer

Full-time - Mid Level

El Segundo, CA

About the position

Radiant is seeking a highly motivated senior manufacturing engineer who will be working closely with design engineers to innovate on the production of complex mechanisms and structures critical to our microreactor technology. You will ensure reliable, safe, quality, and delivery of the Kaleidos demonstration unit that will test in 2026 at the Idaho National Lab and be instrumental to testing the first new reactor design in over 50 years.

Responsibilities

• Responsible for the manufacturing and inspection process for critical components and assemblies within the Kaleidos microreactor.
• Partner with design engineers to develop innovative production methods for complex mechanisms and structures.
• Develop, qualify, and refine manufacturing processes to meet all design and business requirements including safety, quality, efficiency, and delivery.
• Develop and execute manufacturing specifications and fabrication instructions.
• Manage manufacturing bill-of-materials (mBOM) for components and assemblies.
• Identify and develop appropriate suppliers for component sourcing and fabrication.
• Identify, plan, and execute capital equipment, machine, and layout upgrades to meet evolving production requirements.
• Drive initiatives for continuous improvement in manufacturing processes and product quality.

Requirements

• Bachelor’s degree from an accredited institution in mechanical, manufacturing, or other related engineering discipline.
• 4+ years of experience with manufacturing of mechanical products in a production environment, preferably in high-tech or energy sectors.

Nice-to-haves

• Master’s degree from an accredited institution in mechanical, manufacturing, or other related engineering discipline.
• Experience with machining and ancillary operations such as milling, turning, grinding, EDM of materials.
• Experience with interpreting engineering drawings and models, Geometric Dimensioning & Tolerancing (GD&T).
• Experience with inspection systems including manual gauges and coordinate-measuring machine (CMM).
• Experience with non-destructive testing/non-destructive evaluation (e.g. fluorescent penetrant inspection, radiography, eddy current).
• Experience with custom machine design; electromechanical systems, motors, actuators, linear rails, bearings, lifting/rigging, etc.
• Experience with design of multi-component assemblies in CAD (NX or similar).
• Strong problem-solving skills and attention to detail.
• Self-motivated with strong organizational, written, and oral communication skills.
• Demonstrated ability to work collaboratively with design and operations teams.

Benefits

• Substantial incentive stock plan for all full time, salaried employees.
• 100% up to base silver level plan for employee + 50% dependents, offers up to Platinum plans.
• Sponsored memberships for employees and their dependents through One Medical.
• 100% top tier plan coverage + 50% for dependents for vision.
• 100% top tier plan coverage, orthodontia extra, 50% for dependents for dental.
• Voluntary Life, Accident, Hospital, Critical Illness, Commuter and FSA are offered as employee contributed benefits.
• Free snacks and drinks onsite.
• Flexible PTO policy.