Senior System Administrator at Radiant

El Segundo, California, United States

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Not SpecifiedCompensation

Senior (5 to 8 years)Experience Level

Full TimeJob Type

UnknownVisa

Nuclear Energy, Clean TechnologyIndustries

Requirements

Bachelor’s degree in computer science or engineering
5+ years of professional experience as a system administrator or infrastructure engineer
Strong Windows and Linux system administration skills in production environments
In-depth understanding of networking concepts (TCP/IP, routing, DNS, firewalls) and storage systems
Proficiency in scripting or programming languages (e.g., Bash, Python, Power Automate) for automation
Experience with infrastructure as code tools (e.g., Terraform, Ansible, or similar)
Experience with PLCs (like Beckhoff or Rockwell Automation)
Ability to work from Radiant’s office in El Segundo, CA (greater Los Angeles) full-time
Must be willing to work extended hours and weekends as necessary
Must work 100% onsite at El Segundo HQ

Responsibilities

Design, deploy, and maintain Radiant’s server, storage, and network infrastructure (including hybrid cloud and on-prem environments)
Ensure high availability, performance, and disaster recovery for critical systems and services
Implement and maintain system security, including patching, access control, hardening, and vulnerability management
Troubleshoot and resolve infrastructure incidents, performing root cause analysis and corrective action
Collaborate with mechanical and production teams to install and configure PLCs, DAQs and set up operator stations
Mentor junior team members and contribute to the development of infrastructure best practices across the organization

Skills

Key technologies and capabilities for this role

Server InfrastructureStorage SystemsNetwork InfrastructureHybrid CloudOn-Prem EnvironmentsHigh AvailabilityDisaster RecoverySystem SecurityPatchingAccess ControlHardeningVulnerability ManagementPLCsDAQsTroubleshootingRoot Cause Analysis

Questions & Answers

Common questions about this position

Is this a remote position or does it require office work?

This role requires working full-time from Radiant’s office in El Segundo, CA (greater Los Angeles). Remote work is not an option.

What are the required qualifications for the Senior System Administrator role?

Candidates need a Bachelor’s degree in computer science or engineering, 5+ years of professional experience as a system administrator or infrastructure engineer, strong Windows and Linux skills, networking and storage knowledge, scripting proficiency (e.g., Bash, Python), experience with IaC tools like Terraform or Ansible, and PLC experience.

What is the salary or compensation for this position?

This information is not specified in the job description.

What is the work environment like at Radiant?

You'll work in an interdisciplinary environment with a high degree of ownership, collaborating with mechanical and production teams, and mentoring junior members to drive milestones for nuclear reactor commercialization.

What makes a strong candidate for this Senior System Administrator role?

A strong candidate will have the required qualifications plus desired traits like being highly self-motivated with strong communication skills, experience testing software and hardware systems, and familiarity with real-time or embedded systems.

Radiant

Develops compact nuclear microreactors for energy

About Radiant

Radiant Nuclear develops compact nuclear microreactors aimed at providing reliable and sustainable energy solutions, especially for remote locations and military applications. Their main product, the Kaleidos microreactor, utilizes a CO2 cycle for energy production, allowing for a smaller and more portable reactor that can be deployed in challenging environments. Radiant differentiates itself from competitors by leveraging expertise from veterans of SpaceX and other high-tech industries, focusing on advanced technology in the nuclear energy market. The company's goal is to transform the nuclear energy sector by commercializing its microreactor technology and securing government contracts, such as those with the Department of Defense, while also seeking partnerships with private sector companies to enhance growth.

El Segundo, CaliforniaHeadquarters

2019Year Founded

$151.5MTotal Funding

SERIES_CCompany Stage

Government & Public Sector, EnergyIndustries

51-200Employees

Benefits

Health Insurance

Dental Insurance

Vision Insurance

Stock Options

Unlimited Paid Time Off

One Medical

Risks

Public opposition to nuclear energy may hinder Radiant's market acceptance.

Regulatory delays from the Nuclear Regulatory Commission could impact Radiant's timelines.

Competition from cheaper solar and wind technologies may affect Radiant's market share.

Differentiation

Radiant's Kaleidos microreactor offers zero-emissions power for remote and critical applications.

The company leverages expertise from SpaceX veterans for advanced nuclear technology development.

Radiant's CO2 cycle technology enables compact, efficient, and portable nuclear power solutions.

Upsides

Radiant raised $100M in Series C funding to develop commercial microreactors.

The U.S. Department of Defense awarded Radiant $3.8M for turbomachinery development.

Growing demand for sustainable energy in data centers boosts Radiant's market potential.

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