Radiant Industries

Senior Software Engineer, HPC DevOps

El Segundo, CA · Senior · Contract

Sponsorship not specifiedDetected 5 days ago

JavaScriptPythonGoC#ReactFull-Stack DevelopmentCode ReviewAWSCloud PlatformsDockerKubernetesTerraformAnsibleLinuxDevOpsHRISANSYSResearchCommunication

About the role

You'll serve as a go-to resource for engineering teams navigating HPC and scientific computing questions, and grow into ownership of specific systems and tooling areas.
The ideal candidate is patient and organized, comfortable managing a steady volume of cross-disciplinary requests, and capable of digging into complex legacy stacks to find and fix root causes.
Serve as a resource for engineering teams, fielding HPC questions, software issues, and infrastructure needs from nuclear, thermal, materials, mechanical, and electrical engineers, and translating them into actionable work.

Support workflows, tooling, and performance for scientific computing, including Ansys, STAR-CCM+, and Abaqus, covering licensing, environment setup, job orchestration, and results infrastructure.
Partner with DevOps engineers to maintain systems across AWS and on-premises Linux environments, supporting high availability, security, and performance for mission-critical workloads.
Contribute to tools supporting build systems, testing frameworks, deployment automation, and developer environments.
Radiant is an El Segundo, CA-based startup building the world's first mass-produced, portable nuclear microreactors.
Radiant's unique, practical approach to nuclear development leverages modern software engineering to rapidly deliver safe, factory-built microreactors that use existing, well-qualified materials.
Radiant is seeking a driven Senior Software Engineer to support developer productivity, high performance compute infrastructure, and scientific computing workflows.
The infrastructure and tooling you build will help design, run, and mass-produce the first high-temperature gas-cooled portable microreactor ever to be commercialized.

Bachelor's degree in Computer Science, Engineering, Physics, or a related technical field.
Solid code review skills, including the ability to read stack traces and work through legacy scientific software environments.
Ability to dig into complex, nested legacy stacks and communicate findings clearly to a broader technical audience.
Master's degree in Computer Science, Engineering, Physics, or a related technical field.
Strong proficiency in one or more languages: Python, Golang, Rust, C#, or C/C++.

Experience working cross-functionally with engineering teams across mechanical, electrical, materials, and nuclear disciplines.
Working experience with Kubernetes and Docker for orchestration and deployment.
Hands-on experience with HPC environments, simulation workloads, or academic/research computing (SLURM, PBS, MPI, Lustre, EFS, AWS ParallelCluster, or similar).
Comfortable picking up frontend work when needed, React or general JavaScript experience is a plus
an open mind toward full-stack contributions is more important than depth here.

4+ years of professional experience in developer productivity, site reliability, DevOps, infrastructure, or platform engineering.
Strong communication skills; organized and effective when fielding requests from engineering stakeholders.

100% top tier plan coverage + 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.
Flexible PTO policy.

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.
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.
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.

This listing is sourced directly from Radiant Industries's careers page and normalized into a canonical job model.