About the Role

Radiant is seeking a Senior Electrical Engineer with a strong focus on PCB design to lead the electrical architecture for terrestrial reactor control systems, with a long-term path toward space reactor applications. You will serve as the technical authority for custom hardware, owning the design and development of high-reliability, low-noise printed circuit boards - from requirements definition and schematic capture through layout, bring-up, validation, and field deployment.

This role emphasizes full-stack PCB development, including mixed-signal design, high-speed interfaces, power distribution, and signal integrity, while supporting data acquisition, signal conditioning, estimation, and real-time processing functions critical to reactor control.

Responsibilities and Duties

• Own the design and development of multilayer PCBs for reactor control and instrumentation systems (terrestrial, with future space applications).

• Define electrical architecture for mixed-signal systems, including power distribution, analog front ends, and digital control interfaces.

• Design low-noise analog front-end circuits and ensure robust integration with ADC/DAC and digital subsystems.

• Perform schematic capture, component selection, and PCB layout with focus on signal integrity, power integrity, grounding, and EMI/EMC mitigation.

• Develop and review high-speed and precision layouts (e.g., sensor interfaces, data acquisition paths, communication buses).

• Bring up, debug, and validate hardware, including board-level testing, instrumentation, and root-cause analysis.

• Create and execute hardware validation and qualification test plans for performance, reliability, and environmental conditions.

• Collaborate cross-functionally with firmware, FPGA, DSP, and responsible engineers to ensure seamless hardware/software integration.

Required Qualifications and Skills

• Bachelor’s degree in Electrical Engineering or a related field.

• 5+ years of experience designing custom PCBs, including multilayer and mixed-signal boards.

• Strong experience with schematic capture and PCB layout tools (e.g., Altium, Cadence, or similar).

• Solid understanding of signal integrity, power integrity, grounding strategies, and EMI/EMC mitigation techniques.

• Experience with analog and mixed-signal design, including sensor interfaces, ADC/DAC integration, and low-noise design practices.

• Familiarity with high-speed interfaces (e.g., SPI, I2C, UART, Ethernet) and layout constraints.

• Hands-on experience with board bring-up, debugging, and lab instrumentation (oscilloscopes, spectrum analyzers, VNAs, etc.).

• Ability to work across disciplines and support system integration in a complex engineering environment.

Desired Qualifications and Skills

• Master’s degree in Electrical Engineering or a related field.

• Experience designing for high-reliability or harsh environments (nuclear, aerospace, defense, or industrial).

• Familiarity with radiation effects and radiation-tolerant electronics design.

• Experience with power electronics or power distribution design.

• Exposure to FPGA or embedded systems to support hardware/software co-design.

• Familiarity with nuclear instrumentation or detector interface electronics.

• Experience with design for manufacturability (DFM), design for test (DFT), and production bring-up.

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

Benefits and Perks