El Segundo, California, United States · On-site
$201k–$314k/yr
About Radiant Radiant is an El Segundo, CA-based startup building the world’s first mass-produced, portable nuclear microreactors. The company’s first reactor, Kaleidos, is a 1-megawatt, fail-safe microreactor that can b…
Skills: Electrical System Architecture, Hardware Integration, Test Infrastructure Development, Power Distribution, Signal Conditioning
El Segundo, California, United States · On-site
$166k–$250k/yr
The Aerospace Corporation is the trusted partner to the nation’s space programs, solving the hardest problems and providing unmatched technical expertise. As the operator of a federally funded research and development ce…
Skills: Systems Engineering, Systems-of-Systems Architecture, Cybersecurity Architecture, MBSE, Mission Engineering
El Segundo, California, United States · On-site
$76k–$144k/yr
Date Posted: 2026-06-16 Country: United States of America Location: US-CA-EL SEGUNDO-R09 ~ 2222 E Imperial Hwy ~ BLDG R09 Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: Active a…
Skills: Python, MATLAB, AFSIM, STK, Military Operations Analysis
El Segundo, California, United States · On-site
$177k–$266k/yr
RELOCATION ASSISTANCE: Relocation assistance may be available CLEARANCE REQUIRED FOR START: Yes CLEARANCE TYPE: Secret TRAVEL: Yes, 25% of the TimeDescription At Northrop Grumman, our employees have incredible opportunit…
Skills: Flight Dynamics, Linear Control Principles, Non-linear Simulations, Autopilot Functions, MATLAB
El Segundo, California, United States · On-site
$180k–$220k/yr
Overview Modern Technology Solutions, Inc. (MTSI) is seeking a Sr Systems Engineer with deep expertise in classified space control systems engineering processes, including requirements development, configuration manageme…
Skills: Systems Engineering, Requirements Development, Configuration Management, Deficiency Review Board Execution, Technical Baseline Management
El Segundo, California, United States · On-site
$200k–$230k/yr
Company Information For more than 20 years, AEG has played a pivotal role in transforming sports and live entertainment. Annually, we host more than 160 million guests, promote more than 10,000 shows and present more tha…
Skills: Strength And Conditioning, Sports Science, Athlete Monitoring, Periodization Theory, Data Literacy
El Segundo, California, United States · On-site
$100k–$180k/yr
We’re on a mission to make the skies safe and accessible for everyone. Our technology gives pilots greater control by simplifying the management of any aircraft during standard flight operations, inclement weather, and e…
Skills: Human Factors Engineering, Vehicle Packaging, Mechanical Engineering, Solidworks, CATIA
El Segundo, California, United States · On-site
$100k–$120k/yr
About Rainmaker Rainmaker is pioneering a modern cloud seeding system to address water scarcity and inclement weather challenges worldwide. We develop and integrate radar validation, weather-resistant UAS, numerical weat…
Skills: Regulatory compliance, Permitting, Technical writing, Environmental policy, Stakeholder management
El Segundo, California, United States · Hybrid
$134k–$190k/yr
About Radiant Radiant is an El Segundo, CA-based startup building the world’s first mass-produced, portable nuclear microreactors. The company’s first reactor, Kaleidos, is a 1-megawatt, fail-safe microreactor that can b…
Skills: Engineering problem solving, Requirements derivation, Requirements verification, Product design process, Systems engineering
El Segundo, California, United States · On-site
$119k–$146k/yr
About Radiant Radiant is an El Segundo, CA-based startup building the world’s first mass-produced, portable nuclear microreactors. The company’s first reactor, Kaleidos, is a 1-megawatt, fail-safe microreactor that can b…
Skills: System Design, Nuclear Operations, Procedural Writing, Human Factors Engineering, Regulatory Compliance
El Segundo, California, United States · On-site
$134k–$185k/yr
About Radiant Radiant is an El Segundo, CA-based startup building the world’s first mass-produced, portable nuclear microreactors. The company’s first reactor, Kaleidos, is a 1-megawatt, fail-safe microreactor that can b…
Skills: System Design, Nuclear Operations, Procedural Documentation, Human Factors Engineering, Regulatory Compliance
El Segundo, California, United States · On-site
$142k–$213k/yr
RELOCATION ASSISTANCE: Relocation assistance may be available CLEARANCE REQUIRED FOR START: Yes CLEARANCE TYPE: Secret TRAVEL: Yes, 25% of the TimeDescription At Northrop Grumman, our employees have incredible opportunit…
Skills: Flight Dynamics, Linear Control Principles, Non-linear Simulation, Autopilot Functions, Matlab
El Segundo, California, United States · On-site
$134k–$185k/yr
About Radiant Radiant is an El Segundo, CA-based startup building the world’s first mass-produced, portable nuclear microreactors. The company’s first reactor, Kaleidos, is a 1-megawatt, fail-safe microreactor that can b…
Skills: Mechanism Design, Stress Analysis, Finite Element Analysis, Thermomechanical Analysis, Kinematic Analysis
El Segundo, California, United States · On-site
$228k–$279k/yr
Please Note: To conform with the United States Government Space Technology Export Regulations, the applicant must be a U.S. citizen, lawful permanent resident of the U.S., conditional resident, asylee or refugee (protect…
Skills: Digital Communications Architecture, DSP, RF Systems, Satellite Communications, High-Speed Digital Design
El Segundo, California, United States · Remote Solely
Join Our Team as a Work-From-Home Data Entry Research Panelist! Are you ready to earn money from the comfort of your own home? This exciting opportunity is perfect for anyone with a variety of skills and backgrounds – wh…
Skills: Data entry, Typing, Communication, Time management, Computer literacy
El Segundo, California, United States · On-site
$160k–$220k/yr
Amca is building America’s new industrial base. Since the 1990s, our ability to build new aviation and military systems and maintain the ones we already have has eroded. Today, the gap between what the nation needs to pr…
Skills: Mechanical Engineering, Team Leadership, Aerospace Design, Fluid Systems, GD&T
El Segundo, California, United States · On-site
$101k–$151k/yr
RELOCATION ASSISTANCE: Relocation assistance may be available CLEARANCE REQUIRED FOR START: Yes CLEARANCE TYPE: Secret TRAVEL: Yes, 10% of the TimeDescription At Northrop Grumman, our employees have incredible opportunit…
Skills: Low Observable Materials, Electromagnetic Performance, Materials Testing, Fabrication Processes, Military Specifications
El Segundo, California, United States · On-site
$150k–$250k/yr
The Mission GRAM is a self-replication company creating machine labor for the physical economy. Our first research frontier is self-preservation: the base case of physical self-replication. We are building a new class of…
Skills: Robot Locomotion, Reinforcement Learning, Sim-to-Real Transfer, Python, Contact Mechanics
El Segundo, California, United States · On-site
About Matter Intelligence Matter Intelligence builds advanced Earth-observation systems that combine novel sensing technology, spacecraft and airborne platforms, and AI-driven data exploitation. Our systems deliver funda…
Skills: PCB design, Altium Designer, Circuit design, Analog circuits, Digital circuits
El Segundo, California, United States • On-site
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Lead the electrical system architecture and test infrastructure for the Kaleidos microreactor, owning end-to-end integration from requirements to commissioning. Establish validation strategies and manage the budget, schedule, and vendors for electrical hardware activities.
Requires a BS in Electrical Engineering with over 10 years of experience in hardware design, integration, and testing. Proficiency in DAQ platforms, scripting languages, and experience in high-reliability or safety-critical industries is highly desired.
Radiant is an El Segundo, CA-based startup building the world’s first mass-produced, portable nuclear microreactors. The company’s first reactor, Kaleidos, is a 1-megawatt, fail-safe microreactor that can be transported anywhere power is needed and run for up to 5 years without refueling. Portable nuclear power with rapid-deploy capability can replace similar-sized diesel generators and provide critical asset support for hospitals, data centers, remote sites, and military bases. Radiant’s unique, practical approach to nuclear development leverages modern software engineering to rapidly deliver safe, factory-built microreactors that use existing, well-qualified materials. Founded in 2020, Radiant is on track to test its first reactor at the Idaho National Laboratory this summer, with initial customer deliveries beginning in 2028.
Radiant is seeking a Principal Electrical Engineer to lead the electrical system architecture and test infrastructure for Kaleidos, Radiant's commercial microreactor unit targeted for deployment in 2028. You will own end-to-end electrical integration, from early architecture and requirements definition through hardware bring-up, testing, and commissioning, and serve as the technical authority, ensuring the electrical and validation systems are ready to support that milestone.
The ideal candidate brings deep electrical engineering expertise, strong systems-level thinking, and a track record of leading complex hardware programs from concept to deployment. You are equally comfortable making architecture decisions independently and collaborating across mechanical, software, and systems engineering teams.
Define and own electrical and software integration requirements spanning power distribution, signal conditioning, sensor mapping, actuator interfaces, and device simulation.
Own and build out the electrical test infrastructure for Kaleidos, and establish the test environment as a foundational asset to validate the commercial unit ahead of the 2028 deployment target.
Establish and maintain communication between hardware, control systems, and software interfaces.
Define and drive electrical validation strategy; develop test procedures, methodologies, and best practices.
Manage schedule, budget, and vendor management for electrical hardware and integration activities.
Optimize test and validation processes; develop tooling and automation to improve efficiency.
Support electrical integration across multiple critical systems and subsystems.
Lead design reviews and effectively communicate technical decisions to cross-functional stakeholders. (Electrical integration, embedded, software, controls.)
BS in Electrical Engineering or related discipline from an accredited institution.
10+ years of progressive electrical engineering experience, including hands-on hardware design, integration, and test.
Demonstrated experience setting technical direction, mentoring engineers, and driving programs with significant scope and ambiguity.
Demonstrated ability to work under tight timelines and deliver a functional product that meets requirements.
Experience with DAQ and test systems (e.g., NI PXI, dSpace, Speedgoat, or similar platforms).
Proficiency with software and scripting environments (e.g., LabVIEW, TestStand)
Proficiency with data acquisition systems, test execution, and validation frameworks.
Strong electrical and software debugging and root cause analysis skills.
Experience working cross-functionally with software, mechanical, and systems engineering teams.
Proficiency in at least one scripting or programming language (Python, C++, C#, or similar).
MS or PhD in Electrical Engineering, or a related discipline.
Familiarity with real-time simulation systems and/or FPGA-based hardware.
Experience with controls fundamentals and software testing processes.
Hands-on experience with trace capture, data acquisition, and analysis tools.
Background in high-reliability, safety-critical, or regulated industry environments (aerospace, defense, nuclear, medical, or automotive)
Must be willing to work extended hours and weekends as necessary to accomplish our mission.
Must work 100% onsite at El Segundo HQ.
Stock: Substantial incentive stock plan for all full-time employees.
Medical: 100% up to base silver level plan for employee + 50% dependents, offers up to Platinum plans.
One Medical: Sponsored memberships for employees and their dependents.
Vision: 100% top tier plan coverage + 50% for dependents.
Dental: 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.
Total Compensation and Benefits
Radiant compensates people for impact and invests in those who continue to raise the bar. Radiant’s new hire compensation package includes base salary, substantial equity grants, and comprehensive health benefits. Total compensation and level are determined through a rigorous evaluation of interview performance, experience, education, and qualifications, and are designed to support continued growth as scope, responsibility, and impact expand at Radiant.
The best of today’s advanced reactor builders don’t wait for job postings. They join the winning team. If that’s you, contact us directly for immediate opportunities: [email protected].
We are an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity or expression, pregnancy, age, national origin, disability status, genetic information, protected veteran status, or any other characteristic protected by law.
This position involves access to technology that is subject to U.S. export controls. Any job offer made will be contingent upon the applicant’s capacity to serve in compliance with U.S. export controls.
Making Nuclear Power Portable.
Radiant is building the world’s first mass-produced portable nuclear microreactors. The company’s first reactor, Kaleidos, is a 1 MW failsafe microreactor that can be transported anywhere power is needed. Founded in 2020, Radiant plans to test its first reactor in 2026, with initial customer deployments beginning in 2028.
Offices: 1921 E Maple Ave, El Segundo, California 90245, US
Based on 582 listings with disclosed salaries, most science & research jobs in El Segundo, CA pay between $100k–$225k per year. Individual offers vary with seniority, company size, and specialization.
There are currently 639 open science & research positions in El Segundo, CA listed on Clera. New openings are added daily as companies post roles.
Companies currently hiring include The Aerospace Corporation, Boeing, Varda Space Industries, Radiant, Northrop Grumman, among others. Browse the listings above to see every active employer.
Yes — 74 of the 639 open science & research positions offer remote or hybrid work (17 remote, 57 hybrid).
Each listing links directly to the employer's application page. Apply early — fresh listings get the most recruiter attention in the first two weeks.
