Senior Electrical Engineer

About the Company

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 designed to provide critical power for hospitals, data centers, and remote sites.

Responsibilities

• Own the design and development of multilayer PCBs for reactor control and instrumentation systems
• Define electrical architecture for mixed-signal systems, including power distribution and analog front ends
• Perform schematic capture, component selection, and PCB layout with focus on signal integrity and EMI/EMC mitigation
• Develop and review high-speed, high-precision layouts for sensor interfaces and communication buses
• Bring up, debug, and validate hardware using lab instrumentation
• Create and execute hardware validation and qualification test plans for reliability and environmental conditions
• Collaborate cross-functionally with firmware, FPGA, and DSP engineers

Requirements

• Bachelor’s degree in Electrical Engineering or a related field
• 5+ years of experience designing custom multilayer and mixed-signal PCBs
• Proficiency with schematic capture and PCB layout tools such as Altium or Cadence
• Strong understanding of signal integrity, power integrity, and grounding strategies
• Experience with analog and mixed-signal design, including ADC/DAC integration
• Familiarity with high-speed interfaces like SPI, I2C, UART, and Ethernet
• Hands-on experience with board bring-up and lab equipment (oscilloscopes, spectrum analyzers)
• Ability to work 100% onsite in El Segundo

Preferred Qualifications

• Master’s degree in Electrical Engineering
• Experience designing for high-reliability or harsh environments (nuclear, aerospace, or defense)
• Knowledge of radiation effects and radiation-tolerant electronics
• Experience with power electronics or power distribution design
• Exposure to FPGA or embedded systems
• Experience with Design for Manufacturability (DFM) and Design for Test (DFT)