Senior Test Engineer, Radiant Nuclear

• 5+ years of full-time professional experience in engineering problem-solving, including system design, analysis, or testing
• Bachelor’s degree from an accredited institution in mechanical, manufacturing, or other related engineering discipline
• Ability to apply first principles thinking to solve problems and make decisions in uncertain or ambiguous situations
• Background in highly regulated industries (e.g., nuclear, aerospace, aviation, maritime)
• Demonstrated ability to lead projects and work independently
• Strong technical fundamentals in fluids and thermodynamics
• Strong written and verbal communication skills
• Flexible and adaptable mindset - self-driven with the ability to seek out requirements with minimal direction
• Must be willing to work extended hours and weekends as necessary to accomplish our mission
• Must work 100% onsite at El Segundo HQ

Desirable

• We are seeking a Senior Test Engineer to drive mission-critical test operations for the development, qualification, and acceptance our groundbreaking nuclear microreactor technology
• This role offers a rare opportunity to bridge engineering, operations, and human factors in a highly technical and fast-paced environment
• You will collaborate with a multidisciplinary team to translate complex hardware and software designs into clear, executable test operations, with encompassing test procedures that will efficiently and safely execute test, commissioning, and operational activities
• As part of a small, passionate, and accomplished team of test engineers, you will help drive test operations to meet Radiant’s requirements in a fast-paced production environment
• You will directly contribute to test operations by assisting with test planning and execution, risk identification and mitigation, hardware integration for test campaigns, post-test inspections, data review, and hardware performance analysis
• This position goes beyond traditional systems engineering - you will also gain hands-on experience as a test conductor and test director, directly influencing the development of operational software, procedures, and test ground support equipment
• Perform testing as a Test Conductor/Test Director to gain firsthand experience, ensuring procedures align with real-world execution
• Partner with design engineers to develop innovative test methods for complex mechanisms and structures
• Support testing and iterative improvements of fluid, electrical, and structural hardware of the Kaleidos reactor through development, qualification, and acceptance testing
• Identify and develop appropriate suppliers for component sourcing and fabrication
• Drive initiatives for continuous improvement in test processes and data delivery quality
• Support one-off test campaigns in a fast paced, minimum-requirements environment to drive hardware risk reduction
• Ensure compliance with DOE and NRC standards, maintaining strict formatting, clarity, and usability in procedural documentation