Structures Engineer

About VardaLow Earth orbit is open for business. Varda is pioneering the construction of commercial space infrastructure, ranging from in-orbit pharmaceutical manufacturing to efficient reentry capsules.With a commitment to innovation in the orbital economy, Varda is dedicated to developing products and infrastructure that will enable space to directly enhance life on Earth. Our mission revolves around expanding humanity's economic horizons.Our exceptional team, featuring industry veterans from SpaceX, Blue Origin, major pharmaceutical entities, and Silicon Valley, is poised to achieve this ambitious goal. Founded in January 2021 by Will Bruey and Delian Asparouhov, Varda enjoys substantial backing from renowned investors including Khosla Ventures, Lux Capital, Founders Fund, Caffeinated Capital, General Catalyst, and Also Capital.Headquartered in El Segundo, California, Varda operates offices and a production facility where our vehicles, equipment, and materials are designed, built, and tested. We also maintain offices in Washington, DC and Huntsville, AL.Join Varda and contribute to the creation of a thriving in-space ecosystem.

About VardaLow Earth orbit is open for business. Varda is pioneering the advancement of commercial space infrastructure, from in-orbit pharmaceutical production to efficient and reliable reentry capsules.With products ranging from life-saving pharmaceuticals to advanced fiber optics, Varda is at the forefront of innovation in the orbital economy, creating the necessary products and infrastructure to ensure that space advancements directly benefit life on Earth. Our mission is to push the economic limits of humanity.Our team is exceptionally equipped to achieve this mission, featuring leadership and staff with backgrounds from SpaceX, Blue Origin, major pharmaceutical firms, and Silicon Valley. Founded in January 2021 by Will Bruey and Delian Asparouhov, Varda has received significant support 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 production facility where our vehicles, equipment, and materials are designed, integrated, and tested. We also have offices located in Washington, DC, and Huntsville, AL.Join Varda and contribute to the creation of a thriving in-space ecosystem.About This RoleVarda Space Industries is on the lookout for a Senior Propulsion Engineer to oversee ground propulsion fluid systems for our spacecraft. This role entails taking full responsibility for the architecture, design, and functionality of fluid systems that facilitate spacecraft fueling, testing, and launch preparations. Your expertise will be crucial in ensuring the reliability and performance of systems vital to mission success.

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.

Join Varda Space Industries as a Propulsion Engineering Intern for the Fall 2026 semester. This exciting internship opportunity will immerse you in the cutting-edge field of propulsion systems, where you will collaborate with a team of experienced engineers and contribute to innovative projects that are pushing the boundaries of space technology.

Join Radiant Industries as a Mechanical Engineer specializing in Fluid SystemsWe are on the lookout for a dynamic Mechanical Engineer to take the helm of our Kaleidos fluid systems, guiding them from initial design through to production. This role involves working with critical subsystems, including the primary loop and power conversion loop, which play a pivotal role in transforming reactor core heat into electrical power. Your expertise will be crucial in shaping the future of commercial reactor design, aiming for the first new design in over 50 years by 2026.Key Responsibilities:Lead the engineering of fluid systems and components, such as compressors, valves, and heat exchangers.Conduct advanced thermal and fluid analysis to inform design choices, validate system performance, and maintain structural integrity through first-principle calculations and finite element analysis.Perform trade studies to enhance system efficiency and meet project specifications.Create and implement manufacturing/assembly instructions and testing protocols.Develop and maintain a comprehensive Bill of Materials (BOM).Source and cultivate relationships with suppliers for all components.Oversee design, manufacturing, and testing schedules for subassemblies.Conduct risk assessments (FMEA) for subsystems.Gather requirements and provide constructive feedback to cross-functional engineering teams through effective communication.

Join Radiant Industries as a passionate and driven Mechanical Engineer in Fluid Systems - 2026 New Graduate within our KDU Engineering team. You will play a pivotal role in the design, assembly, and testing of the Kaleidos Development Unit (KDU) – marking the United States’ first new fueled reactor design in over half a century. This is your chance to take ownership of significant projects that drive KDU’s readiness for fueled operations while collaborating with a diverse team of engineers.Key ResponsibilitiesParticipate actively in the design, analysis, and testing of fluid subsystems for the KDU.Take full ownership of deliverables from initial concept through to build and validation, with mentorship from senior engineers.Work collaboratively across disciplines to integrate designs and solve technical challenges.Assist in system-level testing, troubleshooting, and iterative design processes to expedite KDU development.Effectively communicate results through design reviews, technical reports, and presentations to team members and leadership.Required Skills and QualificationsBachelor's degree in Mechanical Engineering, Aerospace Engineering, or a related field (completed or expected by Spring 2026).Strong grounding in engineering fundamentals, particularly in thermodynamics and fluid mechanics.Hands-on experience in design and construction through projects, research, lab work, or internships.Proficiency with engineering tools such as CAD, analysis software, and laboratory instrumentation.Preferred Skills and QualificationsMaster's degree in Mechanical Engineering, Aerospace Engineering, or a related discipline (completed or currently pursuing).Relevant internship, co-op, or project experience pertaining to fluid systems.Ability to independently tackle complex engineering challenges and proactively seek resources.Adept at thriving in a dynamic, startup environment with a collaborative, mission-oriented approach.Genuine enthusiasm for Radiant’s mission to swiftly deploy nuclear microreactors in remote areas requiring sustainable, clean energy.Familiarity with reactor physics is advantageous but not mandatory.Additional InformationThis position is located on-site at Radiant’s headquarters in El Segundo, California.

About VardaThe commercial frontier in low Earth orbit is expanding! Varda is at the forefront of developing innovative space infrastructure, ranging from in-orbit pharmaceutical manufacturing to cost-effective reentry capsules.With a focus on life-enhancing products, Varda is pioneering advancements in the orbital economy by creating both the goods and infrastructure necessary for space to have a tangible impact on life on Earth. Our mission is to push the economic limits of humanity.Our exceptional team comprises veterans from leading organizations such as SpaceX, Blue Origin, and prominent pharmaceutical companies. Founded in January 2021 by Will Bruey and Delian Asparouhov, Varda has garnered significant support from esteemed investors including Khosla Ventures, Lux Capital, Founders Fund, Caffeinated Capital, General Catalyst, and Also Capital.Headquartered in El Segundo, California, we have state-of-the-art facilities where our vehicles, equipment, and materials are designed, built, and tested. We also maintain offices in Washington, DC and Huntsville, AL.Join Varda and help us create a thriving ecosystem in space.

About Varda Space Industries Low Earth orbit is open for business. Varda Space Industries develops commercial space infrastructure, with a focus on in-orbit pharmaceutical manufacturing and affordable reentry capsules. Space offers unique opportunities, from producing life-saving medicines to creating advanced fiber optics that can only be made in orbit. Varda’s mission is to build the products and infrastructure that connect space innovation directly to life on Earth, expanding economic possibilities for humanity. The team brings experience from SpaceX, Blue Origin, top pharmaceutical companies, and Silicon Valley. Varda was founded in January 2021 by Will Bruey and Delian Asparouhov, and is backed by investors including Khosla Ventures, Lux Capital, Founders Fund, Caffeinated Capital, General Catalyst, and Also Capital. Headquartered in El Segundo, California, Varda operates a production facility for developing, integrating, and testing vehicles, equipment, and materials. Additional offices are located in Washington, DC, and Huntsville, Alabama. Varda is building the foundation for a thriving in-space ecosystem.

Senior Manufacturing EngineerJoin Radiant Industries as a Senior Manufacturing Engineer, where you will collaborate with design engineers to revolutionize the production of intricate mechanisms and structures essential to our innovative microreactor technology. Your role will be critical in ensuring the reliability, safety, quality, and timely delivery of the Kaleidos demonstration unit, set for testing at the Idaho National Lab in 2026—marking the first new reactor design in over 50 years.Key Responsibilities:Oversee the manufacturing and inspection processes of vital components and assemblies within the Kaleidos microreactor.Collaborate with design engineers to create innovative production methods for complex mechanisms and structures.Develop, validate, and optimize manufacturing processes to fulfill all design and business requirements, including safety, quality, efficiency, and delivery timelines.Formulate and implement manufacturing specifications and fabrication instructions.Manage the manufacturing bill of materials (mBOM) for components and assemblies.Identify, evaluate, and establish partnerships with suppliers for component sourcing and fabrication.Identify, plan, and execute upgrades to capital equipment, machinery, and layout to adapt to evolving production needs.Lead initiatives that promote continuous improvements in manufacturing processes and product quality.

Role OverviewRadiant Industries is on the lookout for a skilled Loads & Dynamics Engineer to lead and conduct structural loads, vibration, and dynamic analyses for intricate mechanical systems associated with Kaleidos, the world's first portable microreactor and its supporting hardware. In this pivotal role, you will ensure the structural integrity and durability throughout the product lifecycle, covering all aspects from manufacturing to deployment and operational environments.This position requires a proactive engineer who thrives in fast-paced, ambiguous settings and collaborates effectively with teams in structures, mechanical design, thermal, nuclear, and testing disciplines.Key ResponsibilitiesDevelop and manage static, dynamic, and transient load analysis for reactor systems, support structures, and transport configurations.Conduct structural dynamics analyses, including modal, random vibration, shock, sine vibration, and fatigue assessments.Implement explicit dynamics simulations to model nonlinear reactor responses during transient seismic and transportation events.Define and analyze transportation and handling environments, addressing shock and vibration from road, rail, air, or sea transport.Generate load cases and environments to support structural sizing, design margins, and verification plans.Conduct finite element analyses (FEA) using tools such as ANSYS and Abaqus.Work collaboratively with design engineers to influence hardware architecture, material selection, and joint design.Assist in test planning and correlation, including shaker tests, modal surveys, and structural verification testing.Create and maintain analysis documentation, reports, and requirements for internal reviews and regulatory interfaces.Contribute to failure investigations, root cause analyses, and design enhancements.Help establish best practices for loads, dynamics, and structural verification within a growing engineering 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.

Role overview Radiant Industries is hiring a Principal Turbomachinery Engineer to act as the Responsible Engineer for advanced turbomachinery within a nuclear-driven power generation system. The focus is on the mechanical design, reliability, and performance of the main rotating assembly in a 1MW closed-loop Brayton cycle. This position requires deep technical ownership of complex, high-speed rotating equipment. What you will do Lead the mechanical architecture for high-speed rotating equipment that operates under extreme temperatures, pressures, and rotational speeds. Guide technical work in rotor dynamics, structural integrity, bearings, seals, and system integration. Collaborate with electrical, thermal, and manufacturing teams to ensure integration across disciplines. Maintain end-to-end responsibility from concept through production, emphasizing technical rigor and sound engineering judgment. Requirements Extensive experience designing and analyzing turbomachinery, with a focus on high-speed rotating hardware. Strong knowledge of rotor dynamics, structural assessment, bearing and seal selection, and system-level integration. Hands-on approach with a track record of delivering production-ready hardware. Ability to work effectively with specialists in electrical, thermal, and manufacturing engineering. Location This position is based in El Segundo, CA.

Join cx2 as an FPGA Engineer, where you will design, develop, and implement advanced FPGA solutions for cutting-edge applications. You will collaborate with a dynamic team of engineers and contribute to innovative projects that push the boundaries of technology.

Join VardaSpace as a Senior Structures Engineer and be at the forefront of innovative aerospace solutions. In this pivotal role, you will lead the design and analysis of structural components for space vehicles, ensuring safety and performance in the demanding environment of space. You will collaborate with a passionate team of engineers and contribute to groundbreaking projects that push the boundaries of technology.

About VardaPioneering the Future of Low Earth Orbit. Varda is at the forefront of developing commercial space infrastructure, ranging from in-orbit pharmaceutical production to efficient and cost-effective reentry capsules.Our innovations include a variety of products, from life-saving pharmaceuticals to advanced fiber optics, all of which can only be developed in space. Varda is committed to driving progress in the orbital economy by establishing the necessary products and infrastructure to ensure that space can directly enhance life on Earth. Our mission is to expand the economic horizons of humanity.Our exceptional team is composed of veterans from SpaceX, Blue Origin, and major pharmaceutical firms, along with experts from Silicon Valley. Founded in January 2021 by Will Bruey and Delian Asparouhov, Varda has garnered significant support from prestigious investors, including Khosla Ventures, Lux Capital, Founders Fund, Caffeinated Capital, General Catalyst, and Also Capital.Headquartered in El Segundo, California, we operate a production facility where our vehicles, equipment, and materials are designed, integrated, and tested. Additionally, we have offices in Washington, DC, and Huntsville, AL.Join Varda and contribute to building a thriving ecosystem in space.About This RoleThe Thermal Engineer will be responsible for conducting thermal analysis and ensuring optimal thermal performance of our spacecraft systems.

Join Picogrid as a Chief Hardware Engineer, where you'll lead the development of cutting-edge hardware solutions. You will be responsible for overseeing the design, prototyping, and testing of innovative hardware products, ensuring they meet both performance and quality standards. Collaborate with cross-functional teams to bring your vision to life while driving strategic initiatives that enhance our technology offerings.

Join Our Team as a Reactor Operations EngineerRadiant Industries is on the lookout for a skilled Reactor Operations Engineer to develop and implement essential procedures for our innovative nuclear microreactor technology. This position presents an extraordinary chance to merge engineering, operations, and human factors in a highly technical and regulated setting. You will work alongside a diverse team to transform intricate hardware and software designs into clear, actionable procedures that comply with DOE and NRC standards. Your efforts will empower Reactor Operators (ROs) and Senior Reactor Operators (SROs) to efficiently and safely conduct testing, commissioning, and operational activities.This role transcends traditional systems engineering; you'll also gain practical experience as a Reactor Operator (RO), directly shaping the development of operational software, procedures, and digital twin simulations. Your contributions will play a vital role in enhancing operator efficiency, safety, and the real-world execution of our state-of-the-art microreactors.

At Sift, we are transforming the way modern machines are designed, tested, and operated. Our cutting-edge platform offers engineers real-time observability over high-frequency telemetry, effectively removing bottlenecks and facilitating faster, more reliable development.Sift originated from our efforts at SpaceX, where we worked on projects like Dragon, Falcon, Starlink, and Starship. These experiences highlighted the necessity for scalable telemetry, robust debugging of flight systems, and unwavering mission reliability, leading to the creation of innovative infrastructure. Founded by a team with backgrounds from SpaceX, Google, and Palantir, Sift is tailored for mission-critical systems where precision and scalability are paramount.As an early engineer at Sift, your role will extend beyond mere code writing; you'll be instrumental in defining architecture, shaping product development, and influencing a culture dedicated to addressing genuine engineering challenges. If you are eager to tackle complex technical problems and contribute to foundational systems that support intricate machines from the ground up, we encourage you to apply.In This Role, You'll:Design, develop, and uphold scalable, resilient infrastructure solutions that cater to our expanding platform and clientele.Collaborate closely with software engineers to enhance application performance and reliability.Establish monitoring, alerting, and logging frameworks to proactively identify and resolve issues.Automate deployment processes and refine infrastructure management using advanced DevOps tools and methodologies.Advance our backend architecture and infrastructure for both cloud and on-premise deployments.Collaborate with the team to set and prioritize our roadmap for maximum customer impact.Lead efforts to enhance infrastructure reliability, performance, and cost efficiency.

At Sift, we are pioneering the future of infrastructure for modern machines, transforming the way they are constructed, tested, and managed. Our innovative platform offers engineers unparalleled real-time observability over high-frequency telemetry, effectively eliminating bottlenecks and facilitating rapid, dependable development.Originating from our groundbreaking work at SpaceX on projects like Dragon, Falcon, Starlink, and Starship, Sift emerged from the need for advanced infrastructure to accommodate complex telemetry, debug flight systems, and ensure mission reliability. Our founding team, with expertise from SpaceX, Google, and Palantir, crafts solutions for mission-critical systems where precision and scalability are paramount.As a pivotal member of our engineering team, you will not only write code but also play a significant role in shaping the architecture, product direction, and culture of a company dedicated to addressing real engineering challenges. If you thrive on tackling intricate technical problems and aspire to build foundational systems that support complex machinery, we encourage you to apply.