El Segundo, California, United States · On-site
$209k–$284k/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 Engineering, People Management, Hardware Design, System Integration, DAQ
El Segundo, California, United States · On-site
$114k–$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: Systems Engineering, Model-Based Systems Engineering (MBSE), SysML, Requirements Management, Risk Management
El Segundo, California, United States · On-site
$114k–$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: Systems Engineering, Model-Based Systems Engineering, SysML, Requirements Management, Risk Management
El Segundo, California, United States · On-site
$87k–$130k/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: Model-Based Systems Engineering, Mission Engineering, Digital Engineering, SysML, UAF
El Segundo, California, United States · Hybrid
$100k–$176k/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: Python, Java, C/C++, Modeling & Simulation, Control Systems
El Segundo, California, United States · On-site
$117k–$227k/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: Electromagnetic Warfare, SATCOM RF, Systems Engineering, Link Budget Analysis, Requirements Development
El Segundo, California, United States · Hybrid
$148k–$221k/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: Communication Architecture, Ground Architecture, Modeling And Simulation, Network Modeling, Mission Management
El Segundo, California, United States · On-site
$99k–$215k/yr
Spacecraft Systems Engineer (Experienced) - Millennium Space Systems Company: Millennium Space Systems Millennium Space Systems, a part of Boeing Defense, Space and Security (BDS), is a fast, agile small satellite compan…
Skills: Space Systems Engineering, Requirements Analysis, Model-Based Systems Engineering, Design Verification and Validation, Configuration Management
El Segundo, California, United States · On-site
$133k–$257k/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: Electro-Optical Engineering, Systems Engineering, Project Management, Integration Testing, Risk Mitigation
El Segundo, California, United States · On-site
$96k–$182k/yr
Date Posted: 2026-06-22 Country: United States of America Location: US-CA-EL SEGUNDO-E02 ~ 2002 E El Segundo Blvd ~ BLDG E02 Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: Activ…
Skills: System Safety Engineering, Software Safety Engineering, MIL-STD-882E, Hazard Analysis, Risk Mitigation
El Segundo, California, United States · On-site
$99k–$215k/yr
Spacecraft Systems Engineer (Experienced) - Millennium Space Systems Company: Millennium Space Systems Millennium Space Systems, a part of Boeing Defense, Space and Security (BDS), is a fast, agile small satellite compan…
Skills: Space Systems Engineering, Requirements Analysis, Model-Based Systems Engineering, Design Verification and Validation, Configuration Management
El Segundo, California, United States · On-site
Overview Stellar Solutions, a nationally recognized “Great Place To Work,” delivers engineering solutions across commercial space and national security missions—from innovative new entrants to established space systems o…
Skills: Systems Engineering, Mission Engineering, Requirements Development, Technical Governance, Acquisition Support
El Segundo, California, United States · On-site
Overview Stellar Solutions, a nationally recognized “Great Place To Work,” delivers engineering solutions across commercial space and national security missions—from innovative new entrants to established space systems o…
Skills: Program Management, Acquisition Support, Radar Remote Sensing, Synthetic Aperture Radar, Requirements Development
El Segundo, California, United States · On-site
Overview Stellar Solutions, a nationally recognized “Great Place To Work,” delivers engineering solutions across commercial space and national security missions—from innovative new entrants to established space systems o…
Skills: Mission Integration, CONOPS Development, Mission Thread Analysis, Effects-Chain Analysis, Cross-Domain Integration
El Segundo, California, United States · On-site
$155k–$200k/yr
About Varda Low Earth orbit is open for business. Varda is accelerating the development of commercial space infrastructure, from in-orbit pharmaceutical processing to reliable and economical reentry capsules. From life-s…
Skills: Combustion Device Architecture, Mechanical Design, Propulsion Engineering, Chemical Propulsion Systems, CAD
El Segundo, California, United States · On-site
$121k–$181k/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: Software Architecture, System Design, Systems Integration, Cloud-native Architectures, Containerization
El Segundo, California, United States · On-site
$121k–$181k/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, Spacecraft Development, Requirements Development, Capability Evaluation, Project Leadership
El Segundo, California, United States · On-site
$135k–$169k/yr
Title: ESS Terminals Systems Engineer Belong. Connect. Grow. with KBR! KBR’s National Security Solutions team provides high-end engineering and advanced technology solutions to our customers in the intelligence and natio…
Skills: Systems Engineering, Protected SATCOM Terminals, System Architecture, Requirements Management, Interface Control Documents (ICDs)
El Segundo, California, United States · On-site
$156k–$234k/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: Supply Chain Risk Management, Electronic Parts Engineering, Radiation Testing, Industrial Base Analysis, Project Management
El Segundo, California, United States · On-site
$162k–$203k/yr
Title: ESS Terminals Senior Systems Engineer Belong. Connect. Grow. with KBR! KBR’s National Security Solutions team provides high-end engineering and advanced technology solutions to our customers in the intelligence an…
Skills: Systems Engineering, Protected SATCOM Terminals, System Architecture, Requirements Development, Interface Control Documents (ICDs)
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Lead and grow a team of electrical engineers focused on test infrastructure and system integration for the Kaleidos microreactor. Manage cross-functional relationships, budgets, and vendor activities to drive execution from architecture through commissioning.
Requires a BS in Electrical Engineering with 8+ years of hardware experience and 2+ years of engineering management. Proficiency in DAQ systems, LabVIEW, and scripting languages is essential.
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 an Engineering Manager, Integration & Test, to lead the electrical engineering team responsible for test infrastructure and system integration for Kaleidos, Radiant's commercial microreactor unit targeted for deployment in 2028. You will manage a team of electrical engineers while owning cross-functional stakeholder relationships and driving execution from early architecture through hardware bring-up, testing, and commissioning. The ideal candidate brings deep electrical engineering expertise, proven people management experience, and a track record of delivering complex hardware programs on tight timelines.
Lead and grow a team of electrical engineers, owning hiring, performance management, and technical development.
Own electrical and software integration requirements spanning power distribution, signal conditioning, sensor mapping, actuator interfaces, and device simulation.
Manage schedule, budget, and vendor relationships for electrical hardware and integration activities.
Drive electrical validation strategy; establish test procedures, methodologies, and best practices across the team.
Own cross-functional alignment with embedded, controls, software, and mechanical engineering teams.
Oversee test infrastructure build-out and establish the test environment as a foundational asset ahead of the 2028 deployment target.
Lead design reviews and communicate technical decisions to cross-functional stakeholders and leadership.
BS in Electrical Engineering or a related discipline.
8+ years of progressive electrical engineering experience, including hands-on hardware design, integration, and test.
2+ years of engineering management experience, including hiring and team development.
Demonstrated ability to drive programs with significant scope and ambiguity under tight timelines.
Experience with DAQ and test systems (e.g., NI PXI, dSpace, Speedgoat, or similar).
Proficiency with LabVIEW, TestStand, and at least one scripting language (Python, C++, C#, or similar).
Strong electrical and software debugging and root cause analysis skills.
MS or PhD in Electrical Engineering or a related discipline.
4+ years of engineering management experience, including hiring and team development.
Familiarity with real-time simulation systems and/or FPGA-based hardware.
Experience with controls fundamentals and software testing processes.
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 573 listings with disclosed salaries, most science & research jobs in El Segundo, CA pay between $99k–$227k per year. Individual offers vary with seniority, company size, and specialization.
There are currently 610 open science & research positions in El Segundo, CA listed on Clera. New openings are added daily as companies post roles.
Companies currently hiring include Boeing, The Aerospace Corporation, Varda Space Industries, Northrop Grumman, CHAOS Industries, among others. Browse the listings above to see every active employer.
Yes — 47 of the 610 open science & research positions offer remote or hybrid work (10 remote, 37 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.
