Radiant is seeking a Senior Electrical Engineer with a strong focus on 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. Own schematic capture, component selection, and layout, including high-speed and precision routing for sensor interfaces, data acquisition paths, and communication buses, with focus on signal integrity, power integrity, grounding, and EMI/EMC mitigation.