Senior Electrical Engineer Innovative Nuclear Solutions jobs in El Segundo – Browse 244 openings on RoboApply Jobs

Senior Electrical Engineer Innovative Nuclear Solutions jobs in El Segundo

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Full-time|On-site|El Segundo HQ

About Radiant IndustriesRadiant Industries, based in El Segundo, California, is a pioneering startup dedicated to revolutionizing the energy sector with the world's first mass-produced, portable nuclear microreactors. Our flagship reactor, Kaleidos, is a groundbreaking 1-megawatt microreactor designed for mobility and operational efficiency, capable of running for up to five years without the need for refueling. This innovative portable nuclear power solution is set to replace conventional diesel generators, providing essential energy support for hospitals, data centers, remote locations, and military installations. With a unique focus on modern software engineering, Radiant is committed to delivering safe, factory-built microreactors using proven materials. Founded in 2020, we are on a path to test our first reactor at the Idaho National Laboratory next year, with customer deliveries commencing in 2028.About the RoleWe are looking for a skilled Senior Electrical Engineer to lead the design and implementation of electrical control and measurement systems for our microreactor projects. The successful candidate will take ownership of designs from requirements capture to operational deployment. You will be involved in a variety of tasks ranging from circuit board design to integration with fault-tolerant, commercially available hardware. This role will require close collaboration with cross-disciplinary teams focused on the nuclear reactor core, fluid heat transfer systems, and structural components.Key Responsibilities:Collaborate with multidisciplinary teams to design, implement, and test electrical control systems for microreactors.Create and develop industrial-grade electrical control hardware, including schematics, wiring diagrams, harnessing, and integration assemblies.Lead the design of fault-tolerant and safety-critical electrical systems, prioritizing reliability, maintainability, and compliance with regulations.Develop and review electrical interface designs connecting control systems, power equipment, and instrumentation.Ensure compliance of designs with relevant electrical codes and safety standards, including NFPA and NEC.Conduct SCCR and Arc Flash calculations.Qualifications:Bachelor’s degree in Electrical Engineering or a related field.A minimum of 5 years of experience in designing electrical hardware.Proven expertise in electrical control systems and safety-critical applications.Strong understanding of industry standards and codes related to electrical design.Excellent problem-solving skills and a collaborative mindset.

Feb 6, 2026
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Senior Nuclear Engineer

Radiant Industries

Full-time|On-site|El Segundo HQ

Senior Nuclear EngineerJoin Radiant Industries as a Senior Nuclear Engineer! In this pivotal role, you will take the lead on modeling techniques and reactor physics calculations that drive neutronics parameters such as reactivity, kinetics parameters, and energy deposition distributions. These calculations are integral to our innovative Digital Twin simulation software. Your expertise will ensure the safety and reliability of our modeling methods, which are crucial for the commercialization of the first mass-produced nuclear reactor.Key Responsibilities:Lead the development of core neutronics models and reactor physics calculations, essential for Radiant’s transient safety analyses.Execute calculations of energy deposition distributions, reactivity coefficients, kinetics parameters, and control blade worths for integration into Digital Twin models.Verify modeling assumptions and evaluate the conservatism of neutronics models.Document methodologies for both technical and non-technical stakeholders.Support Verification & Validation (V&V) initiatives for the Digital Twin.Collaborate with teams across the company on reactor physics, shielding, and radiation detection analyses.Qualifications:Bachelor’s degree in Nuclear Engineering or a related discipline from an accredited institution.A minimum of 4 years of experience with Monte Carlo nuclear engineering software such as OpenMC, MCNP, Serpent, SCALE, etc.Proven ability to document analysis methods and assumptions effectively.Strong programming skills in any language, with a preference for Python.Preferred Qualifications:Familiarity with reactor kinetics.Basic understanding of thermal hydraulic principles.Experience in communicating complex information to cross-functional teams.Self-motivated with a strong sense of ownership for project outcomes.

Jun 16, 2025
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Full-time|On-site|El Segundo, CA

About RadiantRadiant Industries, based in El Segundo, CA, is a pioneering startup dedicated to revolutionizing energy solutions through the development of the world's first mass-produced, portable nuclear microreactors. Our flagship reactor, Kaleidos, is a state-of-the-art 1-megawatt, fail-safe microreactor designed for transportability, capable of delivering power for up to five years without refueling. This innovative portable nuclear power source is set to replace conventional diesel generators and provide essential support for hospitals, data centers, remote locations, and military installations. By harnessing modern software engineering, Radiant is committed to rapidly delivering safe, factory-built microreactors using established, high-quality materials. Since our founding in 2020, we are on pace to test our inaugural reactor at the Idaho National Laboratory this summer, with initial customer deliveries anticipated in 2028.About the RoleWe are in search of a Senior Electrical Engineer specializing in PCB design to spearhead the electrical architecture for terrestrial reactor control systems, with aspirations for future applications in space. In this pivotal role, you will act as the technical authority for custom hardware, overseeing the design and development of high-reliability, low-noise printed circuit boards. Your responsibilities will encompass everything from defining requirements and schematic capture to layout, bring-up, validation, and field deployment.This position emphasizes comprehensive PCB development, including mixed-signal design, high-speed interfaces, power distribution, and signal integrity, while also supporting functions crucial for reactor control such as data acquisition, signal conditioning, estimation, and real-time processing.

Apr 5, 2026
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Lead Nuclear Engineer

Radiant Industries

Full-time|On-site|El Segundo HQ

Lead Nuclear EngineerRadiant Industries is on the lookout for a dynamic and technically proficient leader to head our nuclear design and analysis team, specializing in core physics, shielding, instrumentation & controls, and reactor operations. In this pivotal role, you will guide a talented team through the intricate design, development, and testing phases of the innovative Kaleidos microreactor project. You will be responsible for managing schedules, budgets, hiring, and the successful execution of nuclear-related objectives, with a strong emphasis on safety, reliability, portability, and performance. The ideal candidate thrives in interdisciplinary settings, collaborates effectively with engineers and leadership, possesses a deep understanding of engineering principles, excels in creative problem-solving, and is passionate about mentoring and inspiring engineers to achieve their best work. Join us in our mission to bring the first portable nuclear microreactor to market.Key Responsibilities:Lead a multidisciplinary team of nuclear engineers focused on safety analyses, core performance, shielding—including operational dose, activation, shutdown dose—instrumentation & controls, operations, and thermal-hydraulics.Recruit, mentor, and develop a high-performing team of nuclear engineers.Oversee nuclear engineering projects from inception to completion, including requirements gathering, iterative design, simulation pipeline development, and regulatory deliverables.Collaborate with the regulatory team to ensure compliance with nuclear industry standards and requirements.Provide mentorship to engineers through constructive feedback and coaching.

Feb 25, 2026
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Full-time|On-site|El Segundo HQ

Radiant Industries is seeking a talented Nuclear Engineer specializing in Core Physics to join our dynamic team. In this pivotal role, you will be responsible for the design and execution of nuclear-specific testing operations for our upcoming 2026 demonstration. Your expertise will be crucial in developing a substantial portion of our test campaign, ensuring that all proposed testing is not only safe but also aligns with the objectives set forth. You will collaborate closely with fellow nuclear engineers to establish success criteria and work alongside systems and operations engineers to implement comprehensive written procedures.

Jul 15, 2025
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company
Full-time|On-site|El Segundo HQ

About Radiant IndustriesRadiant Industries, headquartered in El Segundo, CA, is pioneering the development of the world’s first mass-produced portable nuclear microreactors. Our flagship reactor, Kaleidos, is a 1-megawatt, fail-safe microreactor designed for mobility, capable of providing power for up to five years without the need for refueling. This innovative technology serves as a sustainable alternative to diesel generators, delivering essential power to hospitals, data centers, remote sites, and military bases. Leveraging modern software engineering and advanced materials, we aim to revolutionize nuclear energy. Founded in 2020, we are poised to test our inaugural reactor at the Idaho National Laboratory in the coming year, with commercial deployments targeted for 2028.About the RoleWe are looking for a dynamic and driven early-career Mechanical Engineer to join our team and contribute to the design and integration of electrical systems within our innovative projects. In this role, you will collaborate with seasoned mechanical and electrical engineers to tackle complex challenges related to packaging, thermal management, structural design, and overall system integration for cutting-edge hardware. This position offers a unique opportunity for hands-on experience throughout the entire hardware development process, from CAD design and analysis to testing and validation, all while supporting our mission to successfully launch the first commercial nuclear reactor in over five decades by 2026.Responsibilities & DutiesContribute to the mechanical design and oversight of electrical components and subsystems, including:Designing mechanical assemblies for electrical components such as control panels, enclosures, brackets, mounts, and supports.Routing and securing cables and wiring harnesses, ensuring strain relief, compliance with bend radius, and serviceability.Integrating sensors, actuators, connectors, and electrical hardware within limited spaces.Creating 3D CAD models and 2D drawings using Siemens NX, including tolerance stack-ups and GD&T fundamentals.Conducting initial load calculations (static, shock, vibration) to guide structural design.Performing thermal analyses and heat transfer evaluations for electrical components and assemblies.Assisting in the selection of suitable materials, fasteners, and finishes based on electrical, thermal, and environmental considerations.

Jan 27, 2026
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Full-time|On-site|El Segundo HQ

Radiant Industries is on the lookout for a Lead Electrical Motor Design Engineer to spearhead the architecture, technical direction, and implementation of high-speed alternators and primary loop motors for our cutting-edge nuclear-driven power generation systems. This pivotal role will oversee the electric machine design function that is essential for the commercialization of the world's first mass-produced nuclear reactors.In this position, you will establish a technical vision for motor design while steering efforts in structural, thermal, and system integration. As a player-coach, you will actively engage in design work while mentoring a team of engineers to ensure the delivery of safe, reliable, and production-ready generator systems.This hands-on technical leadership position comes with substantial cross-functional impact.

Feb 19, 2026
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Full-time|On-site|El Segundo, CA

Radiant Industries designs portable nuclear microreactors in El Segundo, CA. The company's flagship product, Kaleidos, is a 1-megawatt microreactor intended for easy transport and long-term power delivery, up to five years without refueling. Kaleidos aims to serve hospitals, data centers, remote operations, and military sites as a cleaner alternative to diesel generators. Radiant was founded in 2020 and plans to test its first reactor at Idaho National Laboratory this summer, with initial customer shipments scheduled for 2028. Role overview This Lead Principal Electrical Engineer role centers on PCB design for terrestrial reactor control systems, with future potential for space-based applications. The position requires a technical leader to define electrical architecture, set design standards, and guide the complete development cycle for high-reliability, low-noise printed circuit boards. Work includes requirements gathering, schematic capture, layout, validation, and deployment. What you will do Lead electrical architecture for reactor control systems Establish and maintain design standards for PCB development Drive architectural decisions for mixed-signal, high-speed, and power distribution designs Oversee the full development process of printed circuit boards, from requirements through deployment Prioritize signal integrity and low-noise performance for data acquisition and real-time processing Mentor and support other electrical engineers on the team Contribute to the technical direction of Radiant’s hardware platform Key focus areas Full-stack PCB development Mixed-signal circuit design High-speed interface design Power distribution and management Signal integrity for critical control systems

Apr 27, 2026
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Full-time|On-site|El Segundo HQ

Senior Motor Design EngineerJoin Radiant Industries as a Senior Motor Design Engineer, where you will play a pivotal role in designing and developing an advanced alternator for our nuclear-powered high-speed generator. This position entails the design of active components as well as conducting structural and thermal analyses of high-speed generators. You will work collaboratively with cross-functional engineering teams and closely engage with the Power Conversion and Electrical Systems team responsible for efficiently converting mechanical energy into electrical energy, ensuring safety and reliability for our clients. As the ideal candidate, you will take ownership of the active part design for generators, and will also be responsible for conducting simulations, performing analysis, and selecting components. Your contributions will directly impact the commercialization of groundbreaking mass-produced nuclear reactors, delivering clean energy to remote areas and critical infrastructure.

Feb 19, 2025
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Full-time|On-site|El Segundo HQ

Nuclear EngineerJoin Radiant Industries, a pioneering leader in advanced nuclear technology, as a Nuclear Engineer. You will play a crucial role in shaping the future of our Kaleidos microreactor. Your responsibilities will encompass a variety of nuclear engineering disciplines including radiation shielding, criticality safety, accident dose consequence assessment, reactor physics modeling, transient analysis, and radiation detection. Collaborating with a dynamic team in a startup atmosphere, you will spearhead nuclear engineering projects, set strategic directions, and tackle complex technical challenges. The ideal candidate is not only detail-oriented but also possesses a profound passion for advanced reactor design and exhibits exemplary communication skills.Key Responsibilities:Lead nuclear design and analysis initiatives, including:Shielding: Conduct operational dose and shutdown activation analysis, categorize waste, and ensure compliance with customer and regulatory shielding requirements.Neutronics: Perform analysis of reactor fluxes and energy deposition, ensure criticality safety, and validate nuclear models.Accident and Dose Consequence: Assess radiological dose consequences for diverse accident scenarios related to the Kaleidos units.Transient Analysis: Execute coupled neutronics and thermal calculations to deepen understanding of reactor dynamics.Gather requirements and provide constructive feedback to engineers across various domains through effective communication.Undertake additional nuclear design and analysis tasks as assigned.Qualifications & Skills:Bachelor’s degree in Nuclear Engineering or a related field from an accredited institution.1-2+ years of relevant industry experience (a Master’s degree equates to 2 years).Proficiency in radiation transport methods with experience in MCNP/OpenMC/Serpent codes.Skilled in at least one programming language, such as Python, C++, C#, FORTRAN, or other scientific computing languages.Basic understanding of thermal hydraulics principles.Self-motivated with robust organizational, written, and oral communication skills.

May 4, 2025
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Full-time|On-site|El Segundo, CA

Radiant Industries is seeking a Mechanical Engineer focused on electric motor design to join the team developing an advanced alternator for a nuclear-driven, high-speed power generation system. This entry-level position is designed for recent graduates who want hands-on experience with high-voltage electric motors and generators. The role is fully on-site at the El Segundo, CA headquarters. What you will do Design and analyze generator components used in high-speed power systems. Create detailed 3D models and 2D fabrication drawings using CAD and NX software. Collaborate with cross-functional engineering teams, including turbomachinery specialists, to develop systems that convert mechanical energy to electrical energy. Communicate with vendors to source parts for generator construction. Carry out bench, dynamic, and system testing on subsystem components and models. Participate in hands-on assembly, rapid prototyping, and integration of electric motors and generators. Support efforts to commercialize mass-produced nuclear reactors that deliver clean energy to remote locations and essential infrastructure. Requirements Bachelor's degree in Mechanical Engineering with a focus on electric motors. Solid understanding of permanent magnet electric motors. Practical experience in electric motor design, manufacturing, and assembly processes. Preferred qualifications Master's degree in Mechanical Engineering specializing in electric motors. Knowledge of motor control systems, including Space Vector Modulation (SVM). Experience working with teams in turbomachinery, power electronics, thermal, packaging, or software engineering. Additional requirements Willingness to work extended hours and weekends as needed. This position requires 100% on-site presence in El Segundo, CA.

Apr 21, 2026
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companyPicogrid logo
Full-time|$180K/yr - $220K/yr|On-site|El Segundo, CA

About UsPicogrid is a pioneering defense technology company backed by venture capital, dedicated to closing the longstanding gap between cutting-edge technology and the essential requirements of national security. We are currently developing critical infrastructure that integrates sensors, autonomy, and operators, with our innovative solutions actively utilized in operations globally. Our objective is to provide an operational edge to safeguard the United States and its allies.Position OverviewWe are on the lookout for a Senior Electrical Engineer who will play a key role in designing, constructing, and launching mission-critical hardware systems that bolster U.S. defense initiatives. This hands-on position resides at the crossroads of embedded systems, mechanical integration, and high-reliability design, giving you ownership over vital electrical components that drive connected autonomous systems in the field.You will manage the complete design lifecycle of various hardware products: from rapid prototyping and validation to production and deployment in the field. Your responsibilities extend beyond the bench; you will work closely with software, mechanical, and deployment teams to guarantee that systems function reliably in challenging environments ranging from deserts to flightlines and active field operations. Anticipate rapid iterations and minimal barriers between your engineering contributions and the end user, making a tangible impact on real-world missions.

Jan 25, 2023
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Full-time|On-site|El Segundo, CA

About the RoleRadiant Industries is on the lookout for a seasoned Senior Electrical Engineer specializing in digital signal processing (DSP). In this pivotal role, you will spearhead the design and development of innovative signal processing and data acquisition architectures for terrestrial reactor control systems, with aspirations for future applications in space reactor technologies. As the technical authority in real-time signal processing, you will be responsible for the entire lifecycle of DSP pipeline development—from defining requirements and developing algorithms to implementation, validation, and deployment.Your focus will be on comprehensive DSP development, which encompasses digital filtering, detection, estimation algorithms, and real-time processing on embedded processors and FPGA platforms. Collaborating closely with hardware teams, you will ensure the effective interfacing with mixed-signal systems (including ADC/DACs and sensors), thereby guaranteeing precise sampling, low-noise signal conditioning, and reliability in high-stakes reactor control environments.

Apr 3, 2026
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Full-time|On-site|El Segundo HQ

Senior Materials Engineer (Metallurgy)Join Radiant Industries as a dynamic Senior Materials Engineer, where you'll be responsible for the testing and qualification of materials, particularly metals, for our innovative Kaleidos 1MW nuclear microreactor. We’re looking for an individual who takes pride in their work, is highly skilled in materials selection, testing, and analysis, and thrives in a fast-paced, collaborative environment. You will play a crucial role in ushering in the era of the world's first mass-produced, rapidly-deployable nuclear reactor.Responsibilities & DutiesPlan and execute comprehensive materials testing to derive essential material properties for informed design decisions.Spearhead the qualification of all metallic components utilized in the design of the Kaleidos reactor.Conduct rapid prototypic testing to mitigate risks associated with design and integration.Collaborate closely with the manufacturing team to develop and validate application-specific manufacturing processes including welding, brazing, coating, casting, and heat treatments.Provide expert advice on materials selection for various components within the Kaleidos project.Identify and manage equipment necessary for materials characterization and testing.Assess and ensure the quality and accuracy of material property data for our materials database.Define and enhance manufacturing processes to achieve the desired material properties.Required Qualifications & SkillsBachelor’s degree from an accredited institution in Materials Science and Engineering, or Mechanical, Aeronautical, Nuclear, or Chemical Engineering with a focus on materials science.5+ years of experience in the development, testing, and analysis of materials for challenging load scenarios and environments.Desired Qualifications & SkillsMaster’s or PhD degree in a related field is preferred.

Feb 27, 2026
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companyCX2 logo
Full-time|On-site|El Segundo, CA

CX2 is an innovative defense technology firm dedicated to providing spectrum superiority for the United States and its allies. Our advanced AI-driven hardware and software solutions excel in detecting, disrupting, and defending the electromagnetic spectrum across various domains including land, air, sea, and space.We are currently in search of a highly proficient Electrical Engineer to conceptualize, develop, and enhance cutting-edge electronic systems aimed at next-generation drone defense (counter-UAS) strategies. This position requires engagement with pioneering technologies such as RF systems, embedded electronics, sensors, and power systems to effectively detect, track, and neutralize unmanned aerial threats.

Apr 9, 2026
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Senior Mechanisms Engineer

Radiant Industries

Full-time|On-site|El Segundo HQ

Senior Mechanisms EngineerRadiant Industries is on the lookout for a dynamic and experienced Senior Mechanisms Engineer to spearhead the design and development of essential mechanisms within the innovative Kaleidos project. In this role, you will tackle unique engineering challenges to create efficient and dependable mechanisms that govern reactivity and activate critical safety features. Your responsibilities will encompass trade studies, material selection, in-depth structural analysis, assembly, integration, and rigorous testing. Your contributions will be vital in propelling the introduction of the first new commercial reactor design in over five decades by the year 2026.Key Responsibilities:Lead the design and development of crucial mechanisms such as control blade actuators and air jacket valves.Conduct comprehensive trade studies and formulate designs that align with program requirements.Execute detailed thermomechanical analysis (including static strength and durability/fatigue) and kinematic analysis to assess structural integrity and performance margins using both hand calculations and finite element analysis tools.Develop and implement manufacturing and assembly instructions along with test plans.Create and oversee a Bill of Materials (BOM).Identify and cultivate relationships with suppliers for necessary components.Manage schedules for subassembly design, manufacturing, and testing.Conduct risk analysis (FMEA) for subsystems.Gather requirements and provide insights to engineers across other functional areas through effective communication.Qualifications:Bachelor's degree in Mechanical or Aeronautical Engineering from an accredited institution.A minimum of 4 years of experience in mechanism design.Over 4 years of experience conducting stress analysis utilizing both hand calculations and finite element tools (such as Abaqus, Ansys, FEMAP, or equivalent).Desired Skills:Proficient in the design of multi-component assemblies using CAD software (NX or similar).Experience in designing hardware that underwent manufacturing, deployment, and iterative improvements.Familiarity with pneumatic system design.Knowledge in integrating electromechanical components such as motors or encoders.

Jan 27, 2026
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Full-time|On-site|El Segundo HQ

Senior Mechanical Engineer - Fluid SystemsRadiant Industries is on the lookout for an enthusiastic and experienced Senior Mechanical Engineer specializing in Fluid Systems. This pivotal role involves overseeing the design and development of critical Kaleidos fluid systems, guiding projects from initial design to production. These systems are essential for converting reactor core heat into electrical power.As a key member of our engineering team, you'll engage in trade studies, component selection, thermal hydraulic analysis, piping design, vendor evaluation, assembly, and rigorous testing. Your contributions will play a vital role in launching the first new commercial reactor design in over 50 years by 2026.Responsibilities:Lead the engineering process for fluid systems and components, including compressors, valves, and heat exchangers.Conduct complex thermal and fluid analyses to inform design choices, validate system performance, and maintain structural integrity using hand calculations and finite element analysis tools.Perform trade studies to enhance system performance and fulfill program requirements.Create and implement manufacturing and assembly instructions along with test plans.Manage and maintain a comprehensive Bill of Materials (BOM).Identify and cultivate relationships with suppliers for all components.Oversee the design, manufacturing, and testing schedules for subassemblies.Conduct risk analysis (FMEA) for subsystems.Gather requirements and provide guidance and constructive feedback to engineers across various disciplines.Qualifications:Bachelor’s degree in Mechanical, Materials, Aeronautical, Civil, or Structural Engineering from an accredited institution.Proven experience in fluid system architecture design.A minimum of 4 years of experience in designing, building, and testing fluid systems.In-depth knowledge of fluid dynamics and thermodynamics.Solid understanding of heat exchanger design and analysis techniques.

Jun 16, 2025
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Full-time|On-site|El Segundo, CA

Join Radiant Industries as a Senior Electrical Technician!In this pivotal role, you will leverage your expertise to support our engineering team in the development and assembly of cutting-edge electronic systems. Your contributions will ensure the reliability and functionality of our products, making a significant impact in the aerospace and military sectors.Responsibilities:Interpret and work with engineering drawings, electrical schematics, and wiring diagrams.Assemble, wire, and integrate hardware components such as PCBs, harnesses, electrical panels, and enclosures.Adhere to established procedures and specifications throughout the manufacturing process.Collaborate closely with engineers to enhance and document processes.Utilize manufacturing tools including soldering irons, cutters, strippers, crimpers, and torque wrenches with expertise.Conduct electromechanical tests such as continuity, hi-pot, and pull tests.Maintain a high standard of safety, cleanliness, and reliability in all operations.Demonstrate a solid understanding of electrical hardware and safe interaction practices.Required Skills:Experience with military or aerospace-grade electronics.Familiarity with high-power electronics and batteries.Understanding of production equipment and tooling for electromechanical manufacturing.Flexibility to support various projects aligned with company goals.Knowledge of NASA-STD-8739.4, IPC-A-610, IPC-A-620 standards.Experience with UL-508A and NFPA-70 (NEC) regulations.Preferred Qualifications:Ability to stand, bend, and work with small components for extended periods.Excellent vision and fine motor skills for precision work.Capability to lift up to 50 lbs occasionally.Strong teamwork, communication, and organizational skills.Positive attitude and ability to work effectively with minimal supervision.Strong organizational skills and attention to detail.Willingness to work outdoors when required.Ability to work at heights using scissor lifts or ladders as needed.Willingness to travel occasionally for offsite support.

Apr 2, 2026
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Full-time|On-site|El Segundo, CA

Rainmaker tackles water scarcity and weather challenges by developing cloud seeding systems. The team blends radar validation, rugged unmanned aerial systems (UAS), advanced weather modeling, and environmentally safe cloud seeding materials to help increase precipitation. As a Senior Electrical Engineer based in El Segundo, CA, this role works at the heart of Rainmaker’s operations. The position focuses on UAS platforms, dispersion payloads, and advanced sensing equipment, shaping the electrical backbone of the company’s core systems. Collaboration with a skilled engineering group is central to this position, and contributions have a direct, visible impact on project outcomes. Key Responsibilities System Design: Lead the architecture and design of complex electrical systems for hardware platforms. Define requirements, interface specifications, and integration strategies at the system level. Rapid Hardware Prototyping: Build and refine functional hardware prototypes, iterating quickly based on test results and operational feedback. PCB Design: Develop schematics and layouts for power distribution, sensor interfaces, payload controllers, and communication modules using Altium. Board Bringup and Testing: Assemble, debug, and validate new printed circuit boards. Create testing procedures and fixtures to ensure reliable performance during flight operations. Documentation: Prepare detailed technical documentation and fabrication data for manufacturers, supporting quality control and clear communication.

Apr 24, 2026
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Full-time|On-site|El Segundo HQ

Join Radiant IndustriesRadiant Industries, based in El Segundo, CA, is pioneering the development of the world’s first mass-produced portable nuclear microreactors. Our flagship reactor, Kaleidos, is a revolutionary 1-megawatt microreactor designed for mobility and efficiency, capable of running for up to five years without refueling. This innovative solution provides a sustainable alternative to diesel generators, supporting critical operations for hospitals, data centers, remote locations, and military installations. Founded in 2020, we're on a mission to transform the energy landscape with safe, factory-built microreactors, leveraging cutting-edge software engineering. With our first reactor set to be tested at Idaho National Laboratory next year and initial customer deliveries projected for 2028, now is an exciting time to join our team.Role OverviewAs a Senior Power Electronics Engineer, you will be integral to the design and development of power electronics for our nuclear-powered high-speed generator. Your expertise will be crucial in the creation of high-voltage and high-speed generator drives, DC-DC converters for high-voltage batteries, and inverters for both standalone and grid-tied applications. Collaborating with a dynamic team, you will be responsible for the complete power electronics design, analysis, simulation, and component selection. You will work alongside leading industry engineers and engage with vendors and governmental organizations, playing a key role in bringing our groundbreaking nuclear microreactor to market.Key ResponsibilitiesDesign power electronic systems to convert AC and DC power into stable, grid-compatible voltages and frequencies.Take ownership of configuring active rectifiers, inverters, and DC-DC converters.Implement EMI/EMC strategies in system design, including line filter selection, capacitors, grounding, and isolation.Apply your expertise in designing and validating gate drivers, power stages, magnetics, and control systems.Conduct modeling and detailed simulation of inverters.Lead the design and construction of fully functional inverters independently.Perform formal circuit analysis, including de-rating and worst-case scenario evaluations.Optimize for loss, efficiency, and conduct thermal analysis of the inverters.

Mar 17, 2026

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