IT Help Desk Associate

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’s 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.

Radiant is seeking a dedicated IT Help Desk Associate. You will be the first line of support to all end users in the organization for computer, software, hardware, and network issues. This role requires being both reactive and proactive, from troubleshooting and solving problems to implementing process improvements to enhance the employee experience. The ideal candidate has a keen eye for detail, excellent customer service skills, and a desire to learn new technologies continuously. You will be instrumental in enabling our success to test the first new reactor design in over 50 years by 2026.

Responsibilities & Duties:

• Provide first-line technical assistance and support to in-person and remote end users, resolving issues with computers, software, hardware, networks, and peripherals.

• Manage the support request software system (Jira) to ensure timely and effective issue resolution.

• Maintain IT inventory, including workstations and accessories.

• Collaborate with other members of IT to complete user-facing projects.

• Provide smooth and effective onboarding and offboarding for all employees and contractors.

• Develop and maintain documentation and processes as the company scales. 

Required Qualifications & Skills:

• 1+ years in a help desk, IT associate, or similar industry position.

• Basic knowledge of and experience with troubleshooting Windows devices (consumer or enterprise).

• Excellent and effective verbal and written communication.

• Must have great attention to detail in both issue resolution and proactive follow-up in process improvement.

Desired Qualifications & Skills:

• 2+ years in a help desk, IT associate, or similar industry position.

• Experience with Office 365, Microsoft Entra ID (formerly Azure AD), and/or Intune.

• Experience with troubleshooting macOS and Linux.

• Desire to go the extra mile and leave no stone unturned when troubleshooting and reaching solutions.

• Eager to continuously learn new technologies with an innate sense of curiosity.

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.

• 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. Radiant’s 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 today’s advanced reactor builders don’t wait for job postings. They join the winning team. If that’s you, contact us directly for immediate opportunities: [email protected].
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.