Electrical Engineering Internship at Rainmaker | El Segundo, CA

Important Notice: In compliance with the U.S. Government Space Technology Export Regulations, applicants must be U.S. citizens, lawful permanent residents, conditional residents, asylees, or refugees, or be eligible to acquire the necessary authorizations from the U.S. Department of State.At CesiumAstro, we are innovators and leaders in developing advanced communication systems for satellites, UAVs, launch vehicles, and various space and airborne platforms. Our vibrant and collaborative work environment fosters learning, growth, and engagement across all levels of our organization. If you seek an interactive, hands-on work experience with autonomy, CesiumAstro is the perfect place for you. We invite enthusiastic, team-oriented, and innovative individuals to become part of our journey.We are on the lookout for a Power Electronics Engineer II to bolster our expanding spacecraft payload development team. In this role, you will play a crucial part throughout the entire development lifecycle of cutting-edge power electronics hardware for satellites and space power systems payloads. Your contributions will range from defining power system architectures and conducting trade studies to detailed circuit design, simulation, PCB layout, verification, integration testing, and providing manufacturing support.

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.

Role overview Mattel Inc. seeks a Senior Electronics Engineer in El Segundo to help shape the electronics behind its product lines. This role combines hands-on technical work with creative thinking to bring engaging toys and products to life. What you will do Design and develop electronic systems and components for both new and existing Mattel products Collaborate with teams across design, mechanical engineering, and manufacturing to integrate electronics into products Contribute to meeting Mattel’s standards for product quality and performance

About RadiantRadiant Industries, based in El Segundo, California, 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 anywhere it is needed for up to five years without refueling. This innovative solution offers a sustainable alternative to diesel generators, delivering essential energy support for hospitals, data centers, remote installations, and military bases. By integrating modern software engineering with nuclear technology, we are committed to delivering safe, factory-built microreactors utilizing proven materials. Founded in 2020, we are poised to conduct our first reactor test at the Idaho National Laboratory next year, with initial customer deliveries scheduled to commence in 2028.About the RoleWe are looking for a dedicated Senior Power Systems Engineer to spearhead the design, modeling, and validation of electrical power systems integral to our nuclear microreactor platform. In this pivotal role, you will define the mechanisms of power generation, conditioning, control, and distribution across various environments including grid-connected, islanded, and rapidly deployable settings.You will manage power system studies, from initial architectural considerations to thorough modeling, testing, and validation. Collaborating closely with teams from electrical design, controls, turbomachinery, nuclear, thermal, and software, your efforts will ensure safe, stable, and reliable power delivery under diverse operational and contingency scenarios. This role is crucial to the commercialization of the world's first mass-produced portable nuclear reactors.Responsibilities and Duties:Lead power system modeling and analysis for microreactor power generation systems in both grid-connected and islanded modes.Create and maintain steady-state, dynamic, and electromagnetic transient (EMT) models representing generation assets, loads, protective schemes, and supervisory controls.Conduct power flow, fault analysis, protection coordination, and system stability studies to validate system performance across normal and contingency situations.Assess system behavior during disturbances such as load changes, faults, breaker operations, and generation loss events.Assist in design trade studies to enhance power system architecture, control strategies, and equipment selection.Collaborate cross-functionally to ensure integrated solutions that meet the highest standards of safety and efficiency.

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.

Join Radiant Industries as an Electrical Technician!We are seeking a skilled Electrical Technician to be part of our dynamic team at our El Segundo headquarters. In this role, you will leverage your expertise to read engineering drawings and schematics, assemble and wire various hardware components, and collaborate with engineering teams to enhance our processes.Key Responsibilities:Interpret engineering drawings, electrical schematics, and wiring diagrams accurately.Assemble, wire, and integrate hardware, including PCBs, harnesses, electrical panels, and enclosures.Execute tasks in compliance with established procedures and specifications.Collaborate with engineers to develop and document effective processes.Utilize manufacturing tools proficiently, including soldering irons, cutters, strippers, crimpers, and torque wrenches.Conduct electromechanical testing, including continuity, hi-pot, and pull tests.Maintain high operational standards focusing on safety, reliability, and cleanliness.Safely interact with electrical hardware.

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.

Rainmaker builds cloud seeding technology aimed at tackling water scarcity and unpredictable weather. The company’s approach brings together radar validation, weather-hardened unmanned aerial systems (UAS), advanced weather modeling, and environmentally friendly cloud seeding materials to form a full precipitation enhancement system. The Mechanical Engineering Intern will join the engineering team in El Segundo, CA. This position works hands-on with UAS, payload dispersion systems, and both in-situ and remote sensing equipment. Reporting to the Lead Mechanical Engineer, the intern will help develop essential subsystems for Rainmaker’s UAS platform, directly supporting operational and mission objectives. What you will do Hardware prototyping: Design and build working prototypes for UAS subsystems. Update and refine designs based on results from flight tests and mission requirements. Test fixture design: Assist in conceptualizing, designing, building, and running test fixtures to evaluate prototype components. Finite Element Analysis (FEA): Collaborate with mechanical engineers to define loading and boundary conditions, set up and run FEA studies, and confirm results. Documentation: Prepare technical documentation and generate fabrication and assembly data for manufacturing partners. Collaboration: Work with electrical and software engineers, along with other team members, to deliver integrated solutions.

CX2 is an innovative defense technology company dedicated to achieving spectrum dominance for the United States and its allies. Our cutting-edge, AI-driven hardware and software platforms are designed to detect, disrupt, and protect the electromagnetic spectrum across various domains including land, air, sea, and space.We are in search of a talented Flight Test Engineer to become a vital part of our expanding team. The ideal candidate should possess extensive experience in the production and testing of complex systems, early-stage prototyping, and have a robust background in software development.

Engineering TechnicianJoin Radiant Industries as an Engineering Technician, where you will utilize a diverse array of skills in the fabrication and assembly of our innovative microreactor unit. Your role will be pivotal in constructing both large and small-scale test rigs, creating prototype components and tooling, and sourcing the necessary tools for assembly. You will be the fourth key technician on our team, necessitating a high level of autonomy and initiative. In our new El Segundo headquarters, you will manage our prototype shop, working with an assortment of tools across various shop activities, including machining, welding, metal forming, electrical work, and plumbing. This position offers you the chance to make a substantial technical impact as we strive to fuel a new reactor design for the first time in over 50 years by 2026.Key Responsibilities:Fabricate components to specifications using various shop equipment such as mills, lathes, welders, and hand tools.Lead the assembly and commissioning of test rigs and production builds.Conduct troubleshooting and root cause analysis for mechanical, electrical, thermal, and pneumatic issues.Collaborate with engineers to devise solutions and enhancements for hardware design, fabrication, and assembly processes.Maintain high operational standards regarding safety, reliability, and cleanliness.Perform additional tasks as required; versatility is essential in our small team environment.

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.

make-rain builds operational software and data platforms to advance weather modification. The team works on tools that process complex, real-world data to support new approaches in this specialized field. Internship overview This Software Engineering Internship is located in El Segundo, CA. The position is intended for students who want to apply technical skills to real data problems and help deliver software that matters. What you will do Collaborate with engineers to design and refine data workflows for telemetry sources, such as in-situ sensors, remote systems, and drones. Assist in developing and maintaining APIs, software packages, and internal operational tools. Convert raw data into reliable products that support the company's mission. Requirements Enrollment in a Computer Science or related degree program. Interest in working with real-world data and building impactful software. Ability to learn quickly, stay curious, and work independently in changing situations. Willingness to relocate to El Segundo, California for the internship. Preferred skills Proficiency in Python and understanding of core software development concepts. Experience with data management, APIs, and SQL databases. Interest in geospatial, atmospheric, or sensor data. Strong debugging skills and ease with various technical systems.

At Voyager Technologies, we are at the forefront of defense, national security, and space technology, dedicated to delivering transformative solutions that address the most complex challenges. Our mission is to advance human progress and ensure national security while protecting critical assets, thereby leading the charge for technological and operational superiority from land to space.Join Us in Shaping the Future: Become a Part of Voyager TechnologiesThe future is built by those with the courage to innovate. At Voyager Technologies, we are developing pioneering technologies that safeguard lives, expand horizons, and prepare us for what's next. We seek individuals who are problem-solvers, builders, and leaders—those who thrive in challenging environments.As a Software Engineer, you will play a pivotal role in laying the groundwork for humanity's future. Immerse yourself in a culture where innovation is celebrated, curiosity is nurtured, and your contributions make a real impact. We are a collective of doers, thinkers, and creators, united by a shared purpose and a commitment to excellence.If you are eager to channel your skills in a mission-driven environment where the stakes are high, help us forge the future at Voyager.We are looking for a Software Engineer to join our multidisciplinary team of machine learning engineers, software developers, and algorithm experts focused on creating software for geospatial analytics, particularly in the exploitation of Synthetic Aperture Radar (SAR) imagery.In this role, you will be responsible for designing and developing software systems that process, manage, and visualize large-scale geospatial datasets to support critical capabilities for U.S. government and other clients.

Rainmaker develops cloud seeding systems designed to address water scarcity and complex weather patterns. The team integrates radar validation, durable unmanned aerial systems (UAS), numerical weather modeling, and environmentally conscious cloud seeds to create a full solution for precipitation enhancement. The Senior Aero-Mechanical Engineer position is based in El Segundo, CA, within the Engineering division. Projects include work on UAS platforms, payload dispersion systems, and both in-situ and remote sensing technologies. The environment encourages technical initiative and offers the chance to directly influence operational capabilities. Role overview Collaborate with cross-functional teams to design and refine aerodynamic configurations for aircraft operating in demanding weather conditions. Conduct computational fluid dynamics (CFD) simulations to assess aerodynamic performance and behavior. Design, optimize, and review vehicle layouts to meet various operational requirements and endurance targets. Participate in wind tunnel testing and interpret data to validate CFD predictions. Support the creation and implementation of new aerodynamic methods. Work with other engineering disciplines to ensure aerodynamic designs are practical for manufacturing and can progress from concept to prototype.

About VardaThe era of low Earth orbit is here, and Varda is leading the charge. We are pioneering the evolution of commercial space infrastructure, ranging from in-orbit pharmaceutical production to the development of cost-effective reentry capsules.Our groundbreaking work allows for the creation of life-changing products that can only be manufactured in space, enhancing life on Earth. Varda is committed to igniting innovation in the orbital economy by building the products and infrastructure that directly benefit humanity. Our mission is to broaden the economic horizons of mankind.Our team combines a wealth of experience, with leaders and staff sourced from esteemed organizations like SpaceX, Blue Origin, and major pharmaceutical firms, complemented by expertise from Silicon Valley. Founded in January 2021 by Will Bruey and Delian Asparouhov, we are backed by top-tier investors including Khosla Ventures, Lux Capital, and Founders Fund.Headquartered in El Segundo, California, our office and production facility are where we design, integrate, and test our innovative vehicles, equipment, and materials. We also maintain offices in Washington, DC and Huntsville, AL.Join us at Varda and contribute to building a thriving in-space ecosystem. About This RoleAs a Manufacturing Engineer at Varda, you will leverage your expertise to transition manufacturing processes from a handful of custom vehicles to a large number of consistent, simultaneous builds. Your role will be critical in enhancing Varda's manufacturing capabilities.

We are seeking a highly skilled and motivated General Counsel to join our dynamic team at picogrid. In this pivotal role, you will oversee our legal operations, providing strategic advice and support to ensure compliance and mitigate risks while fostering our company's growth and innovation.

Join our innovative team at cx2 as a Manufacturing Engineer specializing in Electronics. In this pivotal role, you will be responsible for designing, developing, and optimizing electronic manufacturing processes, ensuring high-quality production and efficiency. Collaborate with cross-functional teams to implement advanced manufacturing techniques that drive operational excellence and product quality.

Join our dynamic team at Sonsoft Inc. as a DevOps Engineer. In this pivotal role, you will collaborate with cross-functional teams to enhance our deployment pipelines, automate processes, and ensure the reliability of our infrastructure. Your expertise in cloud services, scripting, and container orchestration will help us deliver high-quality software solutions efficiently.If you are passionate about optimizing systems and thrive in a fast-paced environment, we want to hear from you!

We are seeking a talented Senior Software Engineer to join our dynamic team at AMCA in El Segundo, California. In this role, you will be responsible for developing innovative software solutions that enhance our product offerings and drive business success. You will work closely with cross-functional teams to identify and implement new technologies that align with our strategic objectives.The ideal candidate will have a passion for technology, a strong problem-solving mindset, and a desire to contribute to high-impact projects. If you are looking to take your career to the next level in a collaborative and fast-paced environment, we would love to hear from you!