2027 New Graduate - Software Engineer

About Radiant

Radiant is an El Segundo, CA‑based startup building the world’s first mass‑produced, portable nuclear microreactors. The company’s first reactor, Kaleidos, is a 1‑megawatt, fail‑safe microreactor that can be transported anywhere power is needed and run for up to 5 years without refueling. Portable nuclear power with rapid‑deploy capability can replace similar‑sized diesel generators and provide critical asset support for hospitals, data centers, remote sites, and military bases. Radiant leverages modern software engineering to rapidly deliver safe, factory‑built microreactors using existing, well‑qualified materials. Founded in 2020, Radiant is on track to test its first reactor at the Idaho National Laboratory this summer, with initial customer deliveries beginning in 2028.

Responsibilities

• Assist in creating tooling to support a variety of simulation software packages.
• Contribute to internal software products that support simulation and analysis of simulation results.

Qualifications

• BS or MS in Software Engineering, Controls Systems Engineering, or a related discipline.
• Graduating in December 2026 or Spring 2027.
• Familiarity with Python, C++, C#, or similar object‑oriented programming languages.
• Basic knowledge of software development practices and version control tools such as Git.

Desired Qualifications

• Strong self‑motivation and the ability to collaborate effectively in a team environment.
• Interest in contributing to simulation tools or working on software testing.
• Familiarity with distributed software development and common design patterns is a plus.
• A passion for physics, hardware, or electrical engineering is highly encouraged.

Benefits and Perks

• Substantial incentive stock plan for all full‑time employees.
• Medical: 100 % coverage up to base silver level plan for employee + 50 % for dependents; options 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 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 and remote‑workday allocation.
• Company and team‑bonding events, happy hours, and in‑person camaraderie.
• Beautiful El Segundo headquarters close to the Pacific Ocean.

Pay

Compensation Range: $105 K – $130 K