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Systems Engineer - Regulatory

Radiant

Radiant

Software Engineering, Legal
El Segundo, CA, USA
Posted on Jul 3, 2025

Radiant is an El-Segundo, CA-based clean energy startup building a nuclear microreactor. A climate-friendly alternative to diesel generators, Radiant's Kaleidos 1MW microreactor will be the world's first portable, zero-emissions power source that works anywhere. We plan to test our development reactor by 2026 and if successful, it will be the first new commercial reactor design to achieve a fueled test in over 50 years. Radiant's goal is to bring one of the world's first factory-constructed microreactors to market. Our microreactor can bring power to remote parts of the world and provide backup power for life-saving applications in hospitals or disaster-relief scenarios.

Systems Integration Engineer

Radiant is seeking a driven, organized Systems Engineer or Reliability Engineer to manage the integration of hardware systems with customer requirements and regulation. This role is critical to bringing the world’s first portable nuclear microreactor to commercialization in a timely manner. You will work directly with all engineering disciplines to and influence the full hardware lifecycle by providing critical feedback in design reviews, build reviews, and test campaigns. This is an exciting opportunity for systems engineers who enjoy both technical work and operational execution. You will have a direct impact on bringing the safest microreactor to market the fastest.

As a Systems Engineer, you will be responsible for working across all engineering disciplines to tackle the most challenging issues throughout design, build, test, and operations. You will be responsible for identifying technical deficiencies across the program and implementing solutions to mitigate excess risk incurred during design, build, and test

Responsibilities:

  • Establish and implement practices across the company to ensure that hardware is designed, built, and operated with the highest level of engineering rigor.
  • Perform independent assessments of subsystem and system designs to develop understanding of vulnerabilities and associated risk.
  • Drive architectural decision making across engineering functions to improve reliability of both the design and build of hardware.
  • Develop processes and tools to assess manufacturing issues, manage technical risk, and evaluate changes to reactor configuration.
  • Collaborate in technical team's work including design reviews and regulatory and quality documentation; organize data inputs into technical papers and deliverable reports.

Required Skills and Qualifications:

  • Undergraduate degree in engineering.
  • 2+ years of full-time experience with engineering problem solving in design, analysis, or test of systems.
  • Experience with complex hardware and processes related to manufacturing, integration, testing or operations.
  • Applied understanding of requirement derivation, negotiation and verification or experience with the product design process especially as it relates to defining systems, interfaces and specifications.

Desired Skills and Qualifications:

  • Experience with Mission Assurance, Quality Assurance, Reliability Analysis, or Systems Engineering.
  • Full product life cycle experience with hardware that has seen production.
  • Ability to apply fundamental engineering principles.

Employee Benefits for Eligible Employees:

  • Stock: Substantial incentive stock plan for all full time, salaried 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 are offered as employee contributed benefits.
  • Free snacks and drinks onsite.
  • Flexible PTO policy.

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.