Senior Electrical Engineer, HIL & Test Infrastructure Lead

Radiant; El Segundo (CA); On-site; USD 140,000 - 190,000; Full time

Benefits offered by this job

Stock plan

Health benefits

One Medical

Vision coverage

Dental coverage

Parental leave

Nuclear cert program

Lunch & snacks

Job summary

Radiant, based in El Segundo, CA, seeks a Senior Electrical Engineer, HIL, to design, build, and maintain electrical test infrastructure for Kaleidos, our 1 MW microreactor program. You will own test platforms, hardware‑in‑the‑loop systems, and integration strategies, shaping validation procedures and automation across cross‑functional teams.

The role requires 5+ years in electrical engineering with hands‑on HIL experience, and a background in high‑reliability or safety‑critical environments.

Qualifications

• BS in Electrical Engineering or related field.
• 5+ years hands-on experience in electrical engineering including hardware design, integration, and test.
• 3+ years developing hardware-in-the-loop (HIL) systems including signal conditioning, DAQ/IO interfaces, and fixtures for validating embedded controls.
• Demonstrated experience owning and building electrical test infrastructure.
• Proficiency with DAQ and test platforms such as dSpace, NI PXI, Speedgoat, or similar.
• Hands-on experience with data acquisition, test execution, and validation frameworks.
• Strong electrical and software debugging and troubleshooting skills.
• Background in high-reliability, safety-critical, or regulated environments (aerospace, defense, nuclear, medical, or automotive).

Responsibilities

• Build the HIL platform from the ground up: plant simulation, real hardware-in-the-loop, and the test environment Kaleidos ultimately ships from.
• Own the design, build, and maintenance of electrical test infrastructure, including test benches and new test platforms as the program scales.
• Define electrical and software integration requirements across power distribution, signal conditioning, sensor mapping, actuator interfaces, and device simulation.
• Own the communication layer between hardware, control systems, and software, including protocol selection, timing, and boundary fault behavior.
• Lead the electrical validation strategy, developing and iterating the test procedures the program depends on rather than executing someone else’s.
• Assemble, debug, and troubleshoot test hardware and harnesses hands‑on, with minimal guidance.
• Execute test procedures, collect data, and lead analysis across multiple test environments.
• Drive automation and tooling improvements, with real influence over how the team tests.
• Lead design reviews and carry technical decisions to cross‑functional stakeholders.

Skills

Electrical design

HIL systems

DAQ/IO interfaces

Test infrastructure

Debugging skills

Safety-critical environments

Education

BS in Electrical Engineering

Tools

dSpace

NI PXI

Speedgoat

Job description

Radiant, based in El Segundo, CA, seeks a Senior Electrical Engineer, HIL, to design, build, and maintain electrical test infrastructure for Kaleidos, our 1 MW microreactor program. You will own test platforms, hardware‑in‑the‑loop systems, and integration strategies, shaping validation procedures and automation across cross‑functional teams.

The role requires 5+ years in electrical engineering with hands‑on HIL experience, and a background in high‑reliability or safety‑critical environments.