Principal Electrical Engineer - PCB
About The Position
Radiant is seeking a Principal Electrical Engineer with deep expertise in PCB design to define and lead the electrical architecture for terrestrial reactor control systems, with a long-term path toward space reactor applications. You will serve as the foremost technical authority for custom hardware across the organization — setting design standards, driving architecture decisions, and owning the end-to-end 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. As a principal-level contributor, you will shape the technical roadmap for Radiant's hardware platform and mentor engineers across the electrical team.
Requirements
- Bachelor's degree in Electrical Engineering or a related field.
- 8+ years of experience designing custom PCBs, including multilayer and mixed-signal boards.
- Demonstrated experience setting electrical architecture direction and driving decisions across complex, multi-disciplinary programs.
- 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.
Nice To Haves
- 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.
Responsibilities
- Own the design and development of multilayer PCBs for reactor control and instrumentation systems (terrestrial, with future space applications).
- Define and own the electrical architecture strategy 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, high-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.
- Provide technical leadership and mentorship to junior and senior electrical engineers; lead design reviews and own hardware risk identification and mitigation.
Benefits
- Substantial incentive stock plan for all full-time employees.
- 100% up to base silver level plan for employee + 50% dependents, offers up to Platinum plans.
- Sponsored memberships for employees and their dependents.
- 100% top tier plan coverage + 50% for dependents.
- 100% top tier plan coverage, orthodontia extra, 50% for dependents.
- Voluntary life, accident, hospital, critical illness, commuter and FSA/HSA are offered as employee contributed benefits.
- 8-weeks of paid parental leave for all parents. Additional paid pregnancy leave for CA employees.
- Daily catered lunch. Free snacks and drinks.
- Flexible PTO policy. Remote workday allocation.
- Company and team-bonding events, happy hours and in-person camaraderie.
- Beautiful El Segundo headquarters close to the Pacific Ocean.
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What This Job Offers
Job Type
Full-time
Career Level
Principal
