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.
Mechanical Engineer - New Graduates
Radiant is seeking a highly motivated early career mechanical engineers to develop new hardware with an experienced engineering team in a fast-paced startup environment! You'll have the opportunity to design and analyze a wide variety of components in support of developing Kaleidos. You'll get exposure to interdisciplinary teams across software, nuclear and electrical and deepening understanding of integrated systems. You'll have the opportunity to make an impact in Radiant's goal to be the first successfully fueled commercial reactor in over 50 years by 2026.
Responsibilities & Duties
- Mechanical Engineering ownership of components and subsystems, such as the following:
- Reactor core pressure vessel design per Boiler & Pressure Vessel Code (BPVC).
- Reactor internal components and mechanisms.
- Radiation shielding and thermal insulation.
- Heat exchangers and other fluid system components.
- Transportation and assembly tooling.
- Perform detailed thermal and mechanical analysis (static strength, durability/fatigue) to determine structural integrity (margins of safety) using both hand calculations and finite element tools.
- Perform trade studies to optimize structure and meet program requirements.
- Develop and execute manufacturing/assembly instructions and test plans.
- Create and manage a Bill-Of-Materials (BOM).
- Find and develop suppliers for all components
- Own subassembly design, manufacturing, and test schedules
- Own risk analysis (FMEA) for subsystems.
- Collect requirements, provide expertise and feedback to engineers in other functional areas via clear, constructive communication.
Required Qualifications & Skills
- Bachelor’s degree in mechanical engineering or similar field from an accredited institution.
- Experience with CAD and FEA software packages.
Desired Qualifications & Skills
- Solid understanding and application of geometric dimensioning and tolerancing (GD&T).
- Experience designing hardware that was manufactured, deployed and iteratively improved on, including research work or club activities.
- Enjoy solving problems and continually work with a growth mindset.
- Self-motivated with strong organizational, written, and oral communication skills.
- Solid first-principles analysis skillset:
- Proficiency with both "hand calc" analytical methods and higher fidelity Finite Element based analysis methods.
- Proficiency in Python, C or C++.
- Excellent ability to collaborate and communicate with peers, leaders and teams across skillsets.
Additional Requirements
- Must be willing to work extended hours and weekends as necessary to accomplish our mission.
- Must work 100% onsite at El Segundo HQ.
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.
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What We Do
Radiant is a 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. 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.
Why Work With Us
Our world-class team has prior experience in complex hardware development from SpaceX, McMaster, The Boring Company, and renowned national laboratories that define our mentality to radically improve our microreactors. We care deeply about our mission to reduce carbon emissions, and have fun while doing so from trivia nights to ski retreats.
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