ESS Test and Evaluation Engineer

About VardaLow Earth orbit is open for business. Varda is at the forefront of developing commercial space infrastructure, ranging from in-orbit pharmaceutical processing to cutting-edge, economical reentry capsules.We are pioneering innovations in the orbital economy by creating products and infrastructure that enable space to tangibly enrich life on Earth. Our mission is to expand the economic horizons of humanity.Our exceptional team, composed of veterans from SpaceX, Blue Origin, leading pharmaceutical companies, and Silicon Valley, is uniquely equipped to achieve this vision. Founded in January 2021 by Will Bruey and Delian Asparouhov, Varda is supported by esteemed investors including Khosla Ventures, Lux Capital, Founders Fund, Caffeinated Capital, General Catalyst, and Also Capital.Headquartered in El Segundo, California, Varda boasts offices and a production facility dedicated to the construction, integration, and testing of our vehicles, equipment, and materials. We also have locations in Washington, DC and Huntsville, AL.Join Varda and be part of shaping a thriving ecosystem in space.

About VardaLow Earth orbit is open for business. Varda is at the forefront of developing commercial space infrastructure, facilitating everything from in-orbit pharmaceutical manufacturing to the creation of reliable and cost-effective reentry capsules.Our innovations will enable the production of life-saving pharmaceuticals and advanced fiber optics that can only be manufactured in space. We are committed to transforming the orbital economy by building both the products and the infrastructure necessary for space to directly enhance life on Earth. Our mission is to broaden the economic horizons of humanity.Our team is uniquely equipped to achieve this mission, consisting of industry veterans from SpaceX, Blue Origin, major pharmaceutical companies, and Silicon Valley. Founded in January 2021 by Will Bruey and Delian Asparouhov, Varda has received substantial backing from top-tier investors, including Khosla Ventures, Lux Capital, Founders Fund, Caffeinated Capital, General Catalyst, and Also Capital.Headquartered in El Segundo, California, Varda operates a state-of-the-art production facility where our vehicles, equipment, and materials are designed, integrated, and tested. We also maintain offices in Washington, DC, and Huntsville, AL.Join Varda to contribute to the creation of a thriving in-space ecosystem.About This RoleAs an Integration and Test Engineer, you will play a pivotal role in overseeing vehicle systems integration and testing processes. Your responsibilities will encompass the full spectrum of integration and testing activities, ensuring that our systems function flawlessly to meet the high standards of our ambitious mission.

We are seeking a dynamic Systems Integration Engineer to join our innovative team at Radiant Industries. In this role, you will be responsible for designing, implementing, and optimizing integrated systems that enhance operational efficiency and performance. You will collaborate closely with cross-functional teams to ensure seamless integration of complex systems.As a Systems Integration Engineer, you will have the opportunity to work on exciting projects that push the boundaries of technology and innovation. Your expertise will be essential in analyzing system requirements, developing integration strategies, and troubleshooting any issues that arise.

With over 50 years of experience, ENSCO Inc. has been at the forefront of delivering innovative engineering, science, and advanced technology solutions to government and private sectors globally.We take pride in our ability to create and implement cutting-edge technologies that ensure mission success. Our services encompass systems engineering, integration, and advanced technologies that enhance the safety, security, and resilience of critical missions across various domains, including ground, air, space, and information systems.Discover more about ENSCO.Position DescriptionWe are currently looking for a Senior Evolved Strategic Systems (ESS) Program Systems Integration Engineer to join our dynamic Systems Engineering team. This team is responsible for shaping the future of space communication systems that support the Air Force Military Satellite Communications. The successful candidate will engage in Systems Engineering & Integration (SE&I) activities within a multidisciplinary and collaborative framework. You will be expected to collaborate with SE&I team members, contractors, government personnel, and members of the USAF. This role includes leading and supporting multiple working groups to facilitate technical discussions, identify and mitigate risks, address requirement gaps, create briefings, track action items, and document meeting minutes.The MILSATCOM Systems Engineering, Integration, and Test (MSEIT) initiative offers advanced SE&I capabilities for the Air Force’s Space and Missiles System Center. We play a crucial role in the acquisition of state-of-the-art Military Satellite Communications systems, ensuring secure, survivable, and protected communications for our nation’s military personnel. We are seeking technically adept individuals who can thrive in a highly collaborative small team environment, utilizing the latest tools and methodologies to overcome the complexities of integrating sophisticated space and ground communication systems. This position is based on-site in El Segundo, CA. Key responsibilities include but are not limited to:Developing and executing integration strategies and processes to ensure the successful integration of satellite communication systems, segments (Ground, Space, Crypto, Terminals), subsystems, elements, and components; managing the technical baselines among various stakeholders.Conducting thorough analyses of system requirements that define the technical frameworks necessary for successful project execution.

About Radiant IndustriesRadiant Industries, based in El Segundo, CA, is pioneering the development of the world's first mass-produced, portable nuclear microreactors. Our flagship product, Kaleidos, is a 1-megawatt, fail-safe microreactor designed for mobility and operational longevity, capable of running for up to five years without refueling. This groundbreaking technology is set to replace diesel generators in various critical applications, including hospitals, data centers, remote locations, and military bases. Our innovative approach integrates modern software engineering with nuclear development to deliver safe, factory-produced microreactors using proven materials. Founded in 2020, Radiant is preparing to test its inaugural reactor at the Idaho National Laboratory next year, with customer deliveries commencing in 2028.Position Overview: Control Systems Test EngineerWe are looking for a driven and meticulous Control Systems Test Engineer to join our dynamic team. In this crucial role, you will take charge of developing, maintaining, executing, and automating comprehensive test cases throughout the testing lifecycle for our reactor control systems. You will work collaboratively with systems engineers, controls developers, and software teams to uphold the highest standards of quality and reliability in our safety-critical control software.Key ResponsibilitiesAnalyze and assess control system Simulink models and related design documents to gain insights into system behavior and expected performance.Interpret system requirements for the reactor control system to establish thorough test coverage.Create and manage detailed test artifacts, including:Unit test casesSoftware-in-the-Loop (SiL) test casesHardware-in-the-Loop (HiL) test casesHardware test casesConduct all testing phases:Unit testingSiL testingHiL testingFull hardware testingAutomate testing workflows for SiL, HiL, and hardware test cases utilizing scripting languages such as Python or Go (Golang).Organize and oversee structured test campaigns, including regression suites.

Join Vardaspace as a Vehicle Integration & Test Intern for the Fall 2026 semester! This exciting opportunity allows you to gain hands-on experience in the dynamic field of vehicle systems integration and testing. Collaborate with a team of experts, contribute to innovative projects, and enhance your skills in a fast-paced environment.

Join Radiant Industries as a Lead Test Engineer for Power Generation Systems, where you will spearhead the strategy and execution of testing for our innovative power generation systems, encompassing turbomachinery, heat exchangers, controls, and primary cooling systems. This position is perfect for a hands-on technical leader who takes pride in developing test infrastructures, managing complex hardware operations, and mentoring engineering talent while being actively engaged in daily testing activities.In this role, you will take charge of the testing development for our high-speed machinery and build our testing facilities from the ground up. These infrastructures will be pivotal for rapid design iterations, focusing on evaluating vibration, performance, thermal behavior, and system reliability, ultimately facilitating a smooth transition into production acceptance testing. You will collaborate closely with mechanical design, analysis, manufacturing, and operations teams to validate and ensure that turbomachinery designs meet production standards.

Join Matter Intelligence as a Test Engineer and be a pivotal part of our innovative team. In this role, you will engage in designing, implementing, and executing test plans to ensure the highest quality of our products. Your expertise will contribute to enhancing our systems and improving user experiences.

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.

About VardaLow Earth orbit is open for business. Varda is pioneering the development of commercial space infrastructure, ranging from in-orbit pharmaceutical processing to economical reentry capsules.From critical pharmaceuticals to advanced fiber optics, numerous products essential on Earth can only be produced in the unique environment of space. Varda is at the forefront of innovation in the orbital economy, establishing both the products and infrastructure necessary for space to significantly benefit life on Earth. Our mission is to expand the economic frontiers of humanity.Our team is exceptionally equipped to achieve this ambition, comprising veterans from SpaceX, Blue Origin, leading pharmaceutical firms, and Silicon Valley. Varda was founded in January 2021 by Will Bruey and Delian Asparouhov, backed by prominent investors including Khosla Ventures, Lux Capital, Founders Fund, Caffeinated Capital, General Catalyst, and Also Capital.With headquarters in El Segundo, California, Varda operates offices and a production facility where our vehicles, equipment, and materials are designed, integrated, and tested, and we also maintain offices in Washington, DC, and Huntsville, AL.Join Varda and be part of creating a thriving in-space ecosystem.

Director of Test EngineeringRadiant Industries, located in El Segundo, CA, is a pioneering startup focused on developing the world's first mass-produced, portable nuclear microreactors. Our flagship reactor, Kaleidos, features a 1-megawatt failsafe design that can be deployed anywhere power is required, functioning for up to five years without refueling. Our innovative portable nuclear power solutions aim to replace traditional diesel generators, offering vital support for healthcare facilities, data centers, remote locations, and military installations. By leveraging modern software engineering techniques, Radiant is committed to creating safe, factory-built microreactors utilizing existing, reliable materials. Founded in 2020, we are poised to test our inaugural reactor at the Idaho National Laboratory next year, with first customer deliveries anticipated in 2028.Position OverviewWe are looking for a dynamic and experienced Director of Test Engineering to take charge of the design, construction, and implementation of our developmental and qualification test programs aimed at validating our reactor systems and components. This hands-on leadership role involves establishing a dedicated service organization focused on designing test setups, developing instrumentation and data acquisition systems, executing test campaigns, and providing high-quality data and reports to our engineering teams.In this role, you will be pivotal in establishing standardized methods, tools, and infrastructure to enable Radiant to test hardware at the speed required by our development timeline. The testing organization will serve as an internal resource for design engineering teams, ensuring responsiveness and ease of collaboration.Key ResponsibilitiesLead the comprehensive execution of developmental, qualification, and acceptance test campaigns for reactor components and subsystems.Design and construct test setups, ranging from simple bench-level fixtures to intricate thermal-hydraulic loop rigs.Develop and uphold test plans and procedures that outline objectives, instrumentation requirements, success criteria, data deliverables, and safety controls.Oversee test campaigns, including hands-on operation of test equipment and management of technicians.Provide data packages and test reports to engineering teams with the quality and traceability necessary for design decisions and regulatory compliance.Design and implement instrumentation systems, including sensor selection, signal conditioning, DAQ hardware configuration, and wiring.

About VardaLow Earth orbit is open for business. Varda is at the forefront of developing commercial space infrastructure, ranging from in-orbit pharmaceutical manufacturing to cost-effective reentry capsules.With the potential to create life-saving pharmaceuticals and advanced fiber optics, Varda is pioneering innovations that will enable the orbital economy to directly enhance life on Earth. Our mission is to expand the economic frontiers of humanity.Our team is composed of industry veterans from SpaceX, Blue Origin, leading pharmaceutical firms, and Silicon Valley. Founded in January 2021 by Will Bruey and Delian Asparouhov, Varda has garnered support from distinguished investors including Khosla Ventures, Lux Capital, Founders Fund, Caffeinated Capital, General Catalyst, and Also Capital.Headquartered in El Segundo, California, we operate from our offices and production facility where our vehicles, equipment, and materials are designed, integrated, and tested. We also have locations in Washington, DC and Huntsville, AL.Join Varda to help create a thriving in-space ecosystem.About This RoleVarda is on the lookout for a Senior Systems Engineer, Flight Safety to act as the lead architect for mission safety and reentry compliance. As part of our Mission Assurance team, you will spearhead the development of Flight Safety Analysis and the regulatory strategy essential for FAA Part 450 and Range Safety licensing. This is a highly collaborative position that connects various functions across the organization.

Join CX2, a pioneering defense technology firm dedicated to achieving spectrum superiority for the United States and its allies. Our cutting-edge, AI-integrated hardware and software solutions are designed to detect, disrupt, and safeguard the electromagnetic spectrum across land, air, sea, and space.We are currently on the lookout for a proactive Hardware Test Engineer to spearhead the development and execution of testing protocols for our hardware products in a dynamic manufacturing setting. In this role, you will be instrumental in validating product performance, reliability, and compliance by designing test procedures, fixtures, and automated testing systems. This position will support both new product introductions (NPI) and high-volume production efforts at our headquarters in El Segundo, CA.

We are looking for a skilled Hardware Test Engineer to join our dynamic team at usm2. This is an exciting opportunity for individuals who are passionate about testing and verifying hardware systems. You will be responsible for developing and executing test plans, troubleshooting hardware issues, and ensuring product quality meets the highest standards.

Join our dynamic team at Sonsoft Inc. as a Performance Testing Engineer! We are seeking a skilled professional proficient in performance testing tools, particularly Apache JMeter. In this role, you will be responsible for designing, implementing, and executing performance test plans, analyzing results, and providing actionable insights to enhance system performance.Your expertise in test management tools, especially HP ALM, will be essential in ensuring quality and efficiency throughout the testing lifecycle. This is an exciting opportunity to work in a collaborative environment where innovation and excellence are valued.

For over five decades, ENSCO Inc. has been at the forefront of delivering innovative engineering, scientific, and advanced technology solutions to both government and private sectors globally.Our commitment to excellence drives us to develop and implement sophisticated technologies that ensure mission success. We specialize in systems engineering, integration, and advanced technology services aimed at enhancing the safety, security, and resilience of critical operations across terrestrial, aerial, and space domains, as well as the information systems that interconnect them.Discover more about ENSCO.Position OverviewENSCO Inc. is on the lookout for a talented SATCOM Test & Evaluation Engineer. Join our dynamic systems engineering team as we define the future of space communication systems that support the US Space Force (USSF) satellite communications. This role involves collaborating in a multidisciplinary environment to support Systems Engineering & Integration (SE&I) activities.The ideal candidate will interface with SE&I team members, contractors, government personnel, and USSF representatives, taking a lead role in working groups to facilitate technical discussions, identify and mitigate risks, address requirement gaps, create briefings, track action items, and document meeting minutes.As part of the MILSATCOM Systems Engineering, Integration, and Test (MSEIT) initiative, we provide cutting-edge SE&I support to the USSF’s Space Systems Center (SSC). Our mission is to aid the Space Force in acquiring state-of-the-art satellite communications systems that provide secure, survivable, and protected communications for our nation's military personnel. We seek individuals who thrive in collaborative settings and are eager to tackle the complexities of integrating advanced space and ground communication systems. This role is based on-site in El Segundo, CA.Key Responsibilities include, but are not limited to:Developing Test and Evaluation strategies, creating Test and Evaluation Master Plan (TEMP) content, and formulating verification plans.

About Matter IntelligenceAt Matter Intelligence, we are pioneering the future of vision AI with a revolutionary sensor that can perceive molecular chemistry, temperature, and 3D shapes, all integrated into a Large World Model. This innovative system doesn't merely capture images; it comprehensively understands information from a single pixel, which we proudly term as Superintelligent Vision.Join a team of experts who have successfully delivered advanced technologies to Mars for NASA/JPL, co-founded and led infrastructure for OpenAI, developed cutting-edge sensors for U.S. Defense, and created foundational algorithms for spectral and 3D imaging. Together, we are constructing the next generation of infrastructure for vision and intelligence in our physical world.About the RoleWe are on the lookout for a skilled Senior Systems Engineer to take ownership of the end-to-end technical architecture, integration, and mission assurance for a complete remote-sensing space system. In this role, you will act as the technical authority, ensuring that all mission components—from payload and spacecraft to launch, ground operations, and beyond—are cohesively aligned to provide transformative Earth-observation capabilities.Your responsibilities will encompass leading mission systems engineering, orchestrating subsystem integration, maintaining the technical baseline, driving critical design and verification decisions, and guiding the engineering team throughout the entire lifecycle. Your contributions will significantly impact mission feasibility, performance, and long-term operational success.

Join Matter Intelligence as an Early Career Test Engineer specializing in advanced sensor technology. In this dynamic role, you will collaborate with cross-functional teams to design, implement, and execute tests that ensure the reliability and performance of our cutting-edge sensor products. You will have the opportunity to contribute to innovative projects that shape the future of technology.

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.