Senior Power Systems Leader — Onsite Nuclear Microreactors

Radiant; El Segundo, Northern (CA, KY); Hybrid; USD 180,000 - 260,000; Full time

Benefits offered by this job

Stock incentive plan

Comprehensive medical plans

Vision and dental coverage

8 weeks parental leave

Daily catered lunch

Flexible PTO and onsite perks

Job summary

Radiant, an El Segundo, CA-based startup, is seeking a Senior Manager, Power Systems, to build and lead a team of engineers who design, model, and validate electrical power systems for our portable nuclear microreactor platform.

You will guide studies from architecture tradeoffs to detailed testing and system validation, while driving development of in-house power electronics for terrestrial and space-based reactors. The role combines leadership with hands-on technical work.

Qualifications

• BS in Electrical Engineering with emphasis in power or control systems.
• 8+ years designing power systems for generation, microgrids, or mission-critical power systems.
• 3+ years in a formal people management role.
• Experience sizing and integrating high-voltage battery systems with power electronics.
• Track record developing power electronics for high-power, MV equipment.
• Experience leading teams with power system modeling and simulation tools (PSCAD, ETAP, PSS/E, Simulink).
• Strong understanding of grid-forming and grid-following control.
• Ability to communicate technical concepts to cross-functional teams.

Responsibilities

• Build, manage, and grow a team of power systems and power electronics engineers, including hiring, mentoring, and performance management.
• Set team priorities and roadmaps in partnership with leadership from power conversion, controls, nuclear, and software.
• Communicate progress, risks, and results to executive leadership and cross-functional stakeholders.
• Lead the team that owns power system architecture, single-line diagrams, and synchronization strategy for single and multi-reactor configurations, grid-connected and islanded.
• Direct FMEAs and disturbance analysis to validate system stability and protection behavior.
• Own architecture, sizing, and integration of off-the-shelf hardware for energy storage and power conversion.
• Lead in-house power electronics development to support earth and space-based reactor platforms.
• Oversee SIL/HIL and system-level testing, commissioning, and regulatory/power-quality compliance.

Skills

Electrical Engineering

Power Systems

Power Electronics

People Management

System Modeling

Grid Stability

Electrical Safety

Communication Skills

Education

B.S. in Electrical Engineering

Tools

PSCAD

ETAP

PSS/E

Simulink

Job description

Radiant, an El Segundo, CA-based startup, is seeking a Senior Manager, Power Systems, to build and lead a team of engineers who design, model, and validate electrical power systems for our portable nuclear microreactor platform.

You will guide studies from architecture tradeoffs to detailed testing and system validation, while driving development of in-house power electronics for terrestrial and space-based reactors. The role combines leadership with hands-on technical work.