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: Mechanical equipment design, CAD, NX, Geometric Dimensioning & Tolerancing, GD&T
El Segundo, California, United States · On-site
$90k–$140k/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: Digital Signal Processing, RF Engineering, FPGA, Matlab, Python
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: Solid Mechanics, Finite Element Analysis, Structural Analysis, Composite Materials, Linear and Non-linear FEA
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: Propulsion System Analysis, Risk Mitigation, Solid Rocket Motors, Hypersonic Systems, Fluid Dynamics
El Segundo, California, United States · On-site
$190k–$220k/yr
Space Systems Integration (SSI) is a fast-growing engineering company that provides aerospace solutions to a variety of government and commercial customers. Our employees are forward-thinking, self-directed individuals w…
Skills: RF Systems Engineering, Digital Signal Processing, Remote Sensing, Mission Analysis, Systems Engineering
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
$120k–$179k/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. Varda’s W-S…
Skills: Spacecraft Integration, Manufacturing Engineering, Assembly Procedures, Root Cause Analysis, RCCA
El Segundo, California, United States · On-site
$140k–$232k/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. Varda’s W-S…
Skills: Manufacturing Engineering, Payload Integration, DFM, DFA, GD&T
El Segundo, California, United States · On-site
SAIC is seeking an experienced Space Systems Engineer to lead a complex systems acquisition within the Space Combat Power systems portfolio. This role requires extensive expertise in government weapon systems engineering…
Skills: Systems Engineering, Space Systems Acquisition, Program Integration, Risk Mitigation, Technical Oversight
El Segundo, California, United States · On-site
SAIC has an opening for a Space RF Payload subject matter expert (SME) with in-depth knowledge of digital signal processing, signals, remote sensing, mission analyses, and system engineering. You will provide subject mat…
Skills: RF Systems Engineering, Digital Signal Processing, Remote Sensing, Mission Analysis, Systems Engineering
El Segundo, California, United States · On-site
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. Varda’s W-S…
Skills: Systems Engineering, Integration Engineering, Test Engineering, Team Management, Project Management
El Segundo, California, United States · On-site
$110k–$130k/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. Varda’s W-S…
Skills: Cisco Meraki, Microsoft Azure, AWS, Jamf Pro, Microsoft Intune
El Segundo, California, United States · On-site
$28/hr–$40/hr
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. Varda’s W-S…
Skills: Analytical Sample Preparation, U/HPLC, Capillary Electrophoresis, Spectroscopy, Circular Dichroism
El Segundo, California, United States · On-site
$78k–$104k/yr
Be visionary Teledyne Technologies Incorporated provides enabling technologies for industrial growth markets that require advanced technology and high reliability. These markets include aerospace and defense, factory aut…
Skills: Supplier Quality Management, AS9100, ISO 9001, Root Cause Analysis, First Article Inspection
El Segundo, California, United States · On-site
$151k–$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: System Integration, Space Systems Engineering, Risk Assessment, Technical Analysis, Digital Engineering
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)
El Segundo, California, United States · On-site
$92k–$158k/yr
RELOCATION ASSISTANCE: Relocation assistance may be available CLEARANCE REQUIRED FOR START: No CLEARANCE TYPE: Secret TRAVEL: Yes, 10% of the TimeDescription At Northrop Grumman, our employees have incredible opportuniti…
Skills: C++, Python, Linux, Object Oriented Programming, Test-Driven Development
El Segundo, California, United States · On-site
$168k–$252k/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: Portfolio Analysis, Systems Engineering, Technical Leadership, Personnel Management, Project Planning
El Segundo, California, United States · Hybrid
$100k–$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: Constellation Design, Orbital Mechanics, Python, C, C++
El Segundo, California, United States · On-site
$150k–$208k/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: Technical Writing, Instructional Design, Nuclear Systems Operations, Configuration Management, Document Control
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Develop and innovate custom production equipment for the fabrication and assembly of microreactor systems. Design and analyze equipment specifically for the semi-remote fueling and defueling operations of the reactor.
Requires a Bachelor's degree in mechanical or manufacturing engineering with over 4 years of experience in CAD-based equipment design. Proficiency in GD&T and experience with multi-component assembly fabrication are 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 a highly motivated Senior Equipment Engineer who will be working closely with design engineers and the manufacturing team to develop and innovate custom equipment to build and assemble our microreactor system. You will be part of the early team that develops production equipment for the factory that will mass produce, fuel, and refuel Kaleidos.
Partner with design and manufacturing engineers to develop innovative production equipment for fabricating and assembling complex mechanisms and structures.
Design, analyze, and fabricate equipment that enables semi-remote operations for fueling/defueling of the reactor.
Identify and develop appropriate suppliers for components and fabrication.
Bachelor’s degree from an accredited institution in mechanical, manufacturing, or other related engineering discipline.
4+ years of experience in mechanical equipment design and fabrication of multi-component assemblies in CAD (NX or similar).
Solid understanding of Geometric Dimensioning & Tolerancing (GD&T) with experience applying it to fabrication drawings.
Master’s degree from an accredited institution in mechanical, manufacturing, or other related engineering discipline.
Proficiency with both “hand calc” analytical methods and higher fidelity finite element-based analysis methods.
Self-motivated with strong organizational, written, and oral communication skills.
Experience with custom machine design; electromechanical systems, motors, actuators, linear rails, bearings, lifting/rigging, etc.
Strong problem-solving skills and attention to detail.
Demonstrated ability to work collaboratively with design and operations teams.
Must be willing to work extended hours and weekends as necessary to achieve company goals.
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.
