About Radiant

Radiant is an El Segundo CA-based startup building the worlds first mass-produced portable nuclear microreactors. The companys 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. Radiants unique practical approach to nuclear development leverages modern software engineering to rapidly deliver safe factory-built microreactors that use 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.

About the role

Radiant is seeking a Systems Administrator to own and administer core operational systems supporting Manufacturing Execution (MES) Quality Management and Test this role you will ensure that the digital backbone of our manufacturing environment is reliable scalable compliant and aligned with production needs. You will work cross-functionally with Manufacturing Engineering Inventory Quality and Test Engineering and youll be a key technical contributor ensuring our systems are secure scalable and reliable. You will have an opportunity to work in an interdisciplinary environment with a high degree of ownership and drive to advance milestones toward the commercialization of the first mass-produced nuclear reactor.

Responsibilities and Duties:

Administer and maintain Radiants Manufacturing Execution System (MES) including configuration user access workflows and integrations.

Oversee the Purchasing module within ERP or related systems ensuring alignment with supply chain processes.

Support and maintain systems used for Test Operations including data capture traceability and reporting.

Configure workflows user roles permissions and system logic to support production and testing processes.

Monitor system health resolve incidents and perform root cause analysis on system-related disruptions.

Coordinate system upgrades patches and version releases with minimal operational impact.

Develop and maintain disaster recovery and data backup procedures for manufacturing-critical systems.

Act as the bridge between business process owners and external system enhancements and integration efforts.

Identify workflow inefficiencies and recommend system-based improvements.

Develop system documentation SOPs and user training materials.

Build access control audit logs and traceability required for regulated manufacturing.

Ensure system configurations align with internal compliance requirements and export control constraints.

Support audit compliance readiness and security - access documentation around manufacturing systems.

Required Qualifications And Skills:

Bachelors degree in Information Systems Engineering Computer Science or related field.

3 years of experience administering enterprise systems in a manufacturing environment.

Direct experience with MES platforms (inclusive of early-stage systems mid-market systems and enterprise level systems).

Experience supporting QMS issues and corrective actions ERP purchasing supply chain or inventory modules.

Strong understanding of manufacturing workflows BOMs routings traceability production control kitting and material movement.

Ability to translate manufacturing processes into system configurations.

Experience working cross-functionally with operations and engineering teams.

Strong troubleshooting and root cause analysis skills.

Experience with Microsoft O365 Gov and other collaboration technologies.

Desired Qualifications and Skills:

Experience supporting test operations or production test data systems.

Familiarity with integrating MES and QMS systems.

Experience in hardware aerospace nuclear defense or other regulated industries.

Exposure to automation or PLC-connected environments.

Working knowledge of scripting or automation tools for system administration.

Experience supporting multi-site manufacturing operations.

Familiarity working with both cloud and on prem infrastructure.

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.

Benefits and Perks

• Stock: Substantial incentive stock plan for all full-time 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/HSA are 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. Remote workday allocation.

• Company and team-bonding events happy hours and in-person camaraderie.

• Beautiful El Segundo headquarters close to the Pacific Ocean.

Total Compensation and Benefits
Radiant compensates people for impact and invests in those who continue to raise the bar. Radiants new hire compensation package includes base salary substantial equity grants and comprehensive health benefits. Total compensation and level are determined through a rigorous evaluation of interview performance experience education and qualifications and are designed to support continued growth as scope responsibility and impact expand at Radiant.

The best of todays advanced reactor builders dont wait for job postings. They join the winning team. If thats you contact us directly for immediate opportunities: .

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 applicants capacity to serve in compliance with U.S. export controls.

Required Experience:

Unclear Seniority