Joblaze summary

In this role, the Senior Electrical Engineer at Radiant focuses on the design and development of multilayer printed circuit boards for reactor control systems, ensuring high reliability and low noise. Key skills include expertise in mixed-signal design, power distribution, and signal integrity, with proficiency in tools like Altium or Cadence. This position is ideal for experienced engineers with a background in custom PCB design, particularly those familiar with high-reliability environments such as aerospace or defense. Radiant, a startup in the nuclear technology sector, emphasizes innovation and collaboration across disciplines.

Joblaze insights

Listed about a month ago — first seen on Joblaze September 3, 2026. Last confirmed on Radiant's careers page October 29, 2026.
PCB appears in 0.9% of 2575 comparable senior other roles in United States; data acquisition appears in 0.1% of 2575 comparable senior other roles in United States.

Quick facts

Is the Senior Electrical Engineer, PCB role remote?: No — this is an on-site role in El Segundo, CA.
How much experience is required?: At least 5 years of relevant experience for this Senior Electrical Engineer, PCB role.
Where is the role based?: Radiant is hiring for this position in El Segundo, CA.
What's the tech stack?: Joblaze extracted these technologies from the posting: High Speed Interfaces, Mixed Signal Design, PCB, Signal Conditioning, Signal integrity, data acquisition.
What seniority level is this role?: Radiant targets senior candidates for this position.
Is this full-time or contract?: Full-time for this Senior Electrical Engineer, PCB role at Radiant.

From the original posting

About the Role

Radiant is seeking a Senior Electrical Engineer focused on PCB development, mixed-signal design, high-speed interfaces, power distribution, and signal integrity, supporting the data acquisition, signal conditioning, data sampling, and reactor control operations behind Kaleidos, our commercial microreactor targeted for customer deployment in 2028. This is an opportunity to join a world-class micro-nuclear reactor company and develop critical electrical hardware for terrestrial reactor control systems, with a long-term path toward space reactor applications. You’ll join a talented, innovative electronics team and own the design, development, and delivery of mission-critical PCBs.

Responsibilities and Duties

Own the PCB design that controls a micro nuclear reactor.
Design multilayer mixed-signal PCBAs for reactor control and instrumentation that operate in harsh environments, terrestrial today, with space applications ahead.
Design low-noise analog front-end circuits and integrate them with ADC and digital subsystems.
Own schematic capture, component selection, performance analysis, placement, layout, fabrication, and assembly.
Design boards that may include high-speed communication, sensor interfaces, data acquisition paths, and communication buses, focusing on build quality, signal integrity, power integrity, grounding, and EMI/EMC mitigation to operate seamlessly in a nuclear reactor.
Bring up, debug, and validate hardware through board-level testing, instrumentation, and root-cause analysis.
Write and execute the validation and qualification plans that prove performance, reliability, and environmental margin, and present them in design reviews.
Work directly with firmware, FPGA, DSP, and software engineers at the hardware-software boundary.

Required Qualifications and Skills

Bachelor’s degree in Electrical Engineering or a related field.
5+ years designing custom PCBs, including multilayer and mixed-signal boards.
Prior experience delivering hardware you designed, from schematic capture through layout, assembly, bring-up, and qualification into production or field deployment.
Experience with schematic capture and PCB layout tools, specifically Altium.
Hands-on experience with board bring-up, debugging, and lab instrumentation (oscilloscopes, spectrum analyzers, VNAs).

Desired Qualifications and Skills

Master’s degree in Electrical Engineering or a related field.
Experience in signal integrity, power integrity, grounding strategies, and EMI/EMC mitigation.
Analog and mixed-signal design experience, including sensor interfaces, ADC/DAC integration, low-noise practices, and high-speed interfaces (SPI, I2C, UART, Ethernet) with their layout constraints.
Experience designing for high-reliability or harsh environments (nuclear, aerospace, defense, or industrial), including radiation effects and radiation-tolerant design.
Experience with FPGA or microprocessor PCBs and embedded systems supporting hardware/software co-design.
Experience with power electronics or power distribution design.
Familiarity with nuclear instrumentation or detector interface electronics.
Experience with electronics production and 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

Stock: Substantial incentive stock plan for all full-time employees.
Daily catered lunch. Free snacks and drinks.
Flexible PTO policy. Remote workday allocation.

Standard company text repeated across Radiant's postings is omitted here.

Senior Electrical Engineer, PCB