• Overview:

  • Radiant is seeking a highly skilled senior engineering test technician to support development, operation, and production ramp of our proprietary production systems. In this role, you will work closely with engineering to execute complex, multi-day production runs on one-of-a-kind systems and transition those processes into reliable production operations.

  • This position requires deep hands-on experience with hydrogen, vacuum, thermal, and automated process equipment. You will independently operate and troubleshoot safety-critical systems, interpret real-time process data, and make informed adjustments to ensure safe, repeatable, and high quality outcomes. You will be expected to understand system behavior at a fundamental level and actively drive the process.

• Responsibilities and Duties:

  • Independently operate and monitor complex fluid systems during extended runs, including off-shift and overnight coverage as required.

  • Execute detailed test and production profiles involving hydrogen gas, vacuum systems, furnaces, and automated controls

  • Monitor, interpret, and respond to real-time process data, making adjustments as needed to maintain safety, quality, and process objectives

  • Troubleshoot complex system issues spanning fluid systems, vacuum hardware, electrical components, sensors, control loops, and automation

  • Support development, validation, and refinement of advanced processes in close collaboration with engineering.

  • transition validated processes into production operations and execute production work orders

  • Perform precision measurements using hand tools and metrology equipment to verify conformance to specifications

  • Operate and set up automated and semi-automated production equipment including laser welding systems

  • Document process results, deviations, and corrective actions to support traceability and continuous improvement

  • Support equipment maintenance, calibration, and upgrades as needed

  • Maintain strict adherence to safety, quality, and operational procedures when working with hydrogen and high temperature systems

  • Support additional technician duties or cross functional activities as needed to meet company priorities

• Required Skills/Qualifications:

  • 5+ years of hands-on experience in an engineering technician, test technician, or advanced manufacturing role

  • Demonstrated experience working with complex fluid systems involving vacuum and hazardous gasses

  • Experience operating thermal processing equipment such as furnaces or high temperature reactors

  • Strong ability to troubleshoot across multiple disciplines including mechanical, electrical, controls, and fluid systems

  • Hands on experience with precision assembly, cleanliness controlled processes, and careful material handling

  • Proficiency with precision measurement tools (calipers, micrometers, etc)

  • Comfortable operating and setting up automated and semi-automated production equipment.

  • Ability to follow detailed work instructions while exercising independent judgement when conditions deviate

  • Strong problem solving skills and attention to detail

  • Willingness to work non-standard hours including overnight shifts during extended runs

• Desired Skills/Qualifications:

  • Experience with laser welding, brazing, or similar advanced manufacturing processes

  • Familiarity with hydrogen safety standards and best practices

  • Experience supporting production operations and executing work orders in a manufacturing environment

  • Background in materials processing, metallurgy, or thermal treatment processes

  • Experience working with one-of-a-kind or first-of-its-kind equipment

  • Familiarity with data acquisition systems, PLC-controlled equipment, or automated process tooling

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.