Reactor Operations Engineer

Job overview

Reactor Operations Engineer is a 100% onsite role at Radiant Industries’ El Segundo, CA headquarters. Pay is $119,000–$146,475 per year. Radiant is developing portable nuclear microreactors intended to provide power where needed, including hospitals, data centers, remote sites, and military bases. The role supports technical integration of a first-of-a-kind reactor by connecting engineering disciplines, maintaining technical documentation and baselines, identifying cross-cutting risks, and supporting testing and licensing work. These efforts help keep design decisions, safety cases, and regulatory submissions aligned.

What you'll do

• Translate across reactor physics, thermal-hydraulics, materials, controls, mechanical design, manufacturing, and regulatory teams
• maintain P&ID, sensor, and subsystem specification libraries
• help identify and resolve cross-cutting risks
• support safety analysis and licensing consistency
• develop design basis and technical specification documentation
• support testing, data collection, and technical baseline management.

What we're looking for

Skills & competencies

reactor operations engineer

radiant industries

el segundo ca

nuclear microreactors

systems engineering

reactor integration

safety analysis

licensing

technical documentation

onsite

$119,000–$146,475/year

stock plan

medical benefits

paid parental leave

Work arrangement

• Weekend coverage required

Benefits & perks

• Incentive stock plan
• medical, vision, and dental plans
• sponsored One Medical memberships
• paid parental leave
• catered lunch
• flexible PTO
• remote workday allocation.

Why this role

The posting requires a bachelor’s degree in a related engineering discipline and 3–5 years of professional engineering experience. Extended hours and weekends may be required as needed.

About the employer

Radiant Industries is hiring for this role. Industry: Engineering Services. Sector: 54.