Modeling & Simulation Software Engineering Intern - Fall 2026

At Parallel Systems, we are at the forefront of revolutionizing freight transportation with our groundbreaking autonomous battery-electric rail vehicles. Our mission is to transition a portion of the $900 billion U.S. trucking industry to a cleaner, safer, and more efficient rail solution, reshaping the landscape of logistics. Join our innovative team and contribute to creating a smarter, greener future for global freight!Position: Vehicle Software Engineering InternDuration: Summer 2026 Internship

At Parallel Systems, we are at the forefront of revolutionizing freight transportation through our cutting-edge autonomous battery-electric rail vehicles. Our mission is to transition significant segments of the $900 billion U.S. trucking industry to rail, providing more sustainable, safer, and efficient logistics solutions. Become a part of our innovative team and contribute to crafting a smarter, greener future in global freight.Vehicle Integration Test EngineerWe are seeking a proactive Vehicle Integration Test Engineer who will take charge of vehicle validation both at our contract manufacturing sites and in real-world environments. Your role will be pivotal in ensuring that all systems comply with performance, safety, and regulatory standards prior to release.This position merges systems engineering, hardware validation, and factory operations. You will collaborate closely with internal Responsible Engineers and our Contract Manufacturer to establish the testing protocols for vehicles, execute validation campaigns, and ensure thorough traceability from high-level requirements down to subsystem and vehicle verification.This role entails up to 50% travel to our contract manufacturer and customer locations.

K2 Space Corporation is at the forefront of revolutionizing space exploration by constructing the most powerful and largest satellites ever launched. With an impressive backing of $450 million from prominent investors like Altimeter Capital, Redpoint Ventures, T. Rowe Price, Lightspeed Venture Partners, and Alpine Space Ventures, along with an additional $500 million in signed contracts with commercial and U.S. government clients, we are dedicated to mass-producing unparalleled satellite platforms for missions that span from Low Earth Orbit (LEO) to deep space.The advancement of heavy-lift launch vehicles is transforming the industry from a phase of mass limitations to one of mass abundance. We believe this transition necessitates a completely new category of spacecraft. Designed to endure the most extreme radiation environments and to fully leverage today’s and tomorrow’s massive rockets, K2 satellites provide extraordinary capabilities at a constellation scale and across diverse orbits.With multiple launches scheduled through 2026 and 2027, we are committed to Building Bigger, aiming to develop the solar system and evolve into a Kardashev Type II (K2) civilization. If you are a proactive individual who thrives in a dynamic environment and is eager to play a pivotal role in the success of a groundbreaking Series C space startup, we invite you to apply.

At K2 Space Corporation, we are pioneering the development of the largest and most powerful satellites ever launched, unlocking unprecedented performance capabilities across all orbits. With a robust backing of $450 million from top-tier investors, including Altimeter Capital, Redpoint Ventures, T. Rowe Price, Lightspeed Venture Partners, and Alpine Space Ventures, as well as an additional $500 million in contracts with commercial and US government clients, we are on a mission to mass-produce the highest-capacity satellite systems ever designed for missions ranging from Low Earth Orbit (LEO) to deep space.The emergence of heavy-lift launch vehicles is transforming the industry from a phase of mass constraint to one of mass abundance. This new era demands a radically different class of spacecraft. Our satellites are engineered to withstand the most extreme radiation environments while fully leveraging today’s and tomorrow’s advanced rockets, offering unmatched capabilities at constellation scale across multiple orbital paths.With numerous launches scheduled through 2026 and 2027, we are committed to developing the solar system and aspiring to become a Kardashev Type II (K2) civilization. If you are a driven individual who thrives in fast-paced environments and is eager to contribute to the success of a groundbreaking Series C space startup, we invite you to apply.

Join K2 Space Corporation as we revolutionize the satellite industry by developing the largest and highest-power satellites ever launched. With an impressive backing of $450 million from esteemed investors like Altimeter Capital, Redpoint Ventures, T. Rowe Price, Lightspeed Venture Partners, and Alpine Space Ventures, along with an additional $500 million in active contracts with commercial and U.S. government clients, we are on a path to mass-produce unprecedented satellite platforms for missions ranging from Low Earth Orbit (LEO) to deep space.The emergence of heavy-lift launch vehicles is ushering in a new era of mass abundance in the space industry. Our innovative spacecraft are designed to endure extreme radiation environments and to fully leverage the capabilities of today’s and tomorrow’s powerful rockets. K2 satellites provide unparalleled performance at constellation scale across multiple orbital paths.With ambitious launch schedules set for 2026 and 2027, we are committed to pushing the boundaries of space exploration and advancing towards becoming a Kardashev Type II civilization. If you are a driven individual who excels in a dynamic and fast-paced setting and you are eager to contribute to the groundbreaking initiatives of a Series C space startup, we encourage you to apply.

K2 Space Corporation is at the forefront of satellite technology, developing the largest and most powerful satellites ever launched, which are poised to redefine performance standards across all orbits. With significant backing of $450 million from prominent investors like Altimeter Capital, Redpoint Ventures, T. Rowe Price, and others, along with an additional $500 million in secured contracts with commercial and government clients, we are pioneering the mass production of high-capacity satellite platforms for missions ranging from Low Earth Orbit (LEO) to deep space.The evolution of heavy-lift launch vehicles represents a transformative shift in the industry, moving from a phase of mass constraint to one of mass abundance. At K2, we believe this new era requires an innovative class of spacecraft designed to withstand extreme radiation environments while maximizing the capabilities of today's and tomorrow's powerful rockets. Our satellites offer unparalleled performance at constellation scales across multiple orbits.With numerous launches scheduled through 2026 and 2027, we are committed to expanding our understanding of the solar system and striving to evolve into a Kardashev Type II (K2) civilization. If you are a driven individual who thrives in a dynamic environment and is eager to contribute to a revolutionary Series C space startup, we encourage you to apply.

OverviewAs a Forward Deployed Software Engineer (FDSE) at First Resonance, you will be a vital problem solver, joining our elite 'Delta' team and deploying directly to customer sites to tackle their toughest challenges. Your role will involve close collaboration with clients to deeply understand their operations, enabling you to craft custom solutions that integrate seamlessly with our ION platform.Are you passionate about supporting cutting-edge technologies like eVTOLs, rockets, robots, and autonomous vehicles? As an FDSE, your contributions will significantly enhance our customers' capabilities by translating their needs into effective software solutions, guiding projects from inception to delivery, and ensuring their satisfaction. Your daily activities might range from collaborating with engineers to design innovative features that automate processes, to serving as the go-to expert for debugging issues that disrupt production.Responsibilities & DutiesAct as a deployed technical expert, delivering hands-on support for the implementation, utilization, and ongoing enhancement of ION.Work closely with customers to identify their most critical challenges and devise strategic, intelligent solutions (such as building custom web applications and managing large-scale data).Maintain full ownership of solution development and delivery, while ensuring high customer satisfaction levels.Produce clean, scalable, and maintainable code across the entire technology stack.Collaborate in small teams, taking responsibility for the end-to-end execution of high-priority projects.Partner with the First Resonance team to enhance product offerings based on customer feedback and evolving requirements.Minimum Qualifications & SkillsSolid engineering foundation in disciplines such as Computer Science, Mathematics, Software Engineering, Physics, or Data Science.Exceptional communication and interpersonal skills, with a proven ability to build rapport with diverse stakeholders (customers, leadership, and First Resonance teams).Demonstrated experience delivering production-quality code.Proven capability to collaborate effectively with both technical and non-technical team members in fast-paced settings.Willingness to travel up to 40% to customer locations.

Coffman Engineers, Inc. is looking for a Civil Engineering Intern in Los Angeles. This internship centers on practical, hands-on work in a team setting. Interns will collaborate with experienced engineers and gain exposure to real projects that impact local infrastructure. Role overview This position provides a chance to apply classroom knowledge to real engineering challenges. Interns will participate in project tasks and learn directly from professionals in the field. What you will do Work with engineers on active civil engineering projects Contribute to tasks that support community infrastructure Build practical skills in a collaborative environment Requirements Interest in civil engineering Willingness to learn and work as part of a team Availability to work in Los Angeles

Join Apex Technology Inc. as the Director of Comet Vehicle Operations where you will lead our innovative team dedicated to advancing vehicle technology. In this pivotal role, you will oversee the development and operational strategies that drive our mission forward.Your responsibilities will include managing project timelines, collaborating with engineering teams, and ensuring that our vehicle systems meet the highest standards of quality and performance.

Join our dynamic team as a Junior Full-Stack Software Engineer Intern, where you'll play a crucial role in supporting a wide range of development projects. This internship offers an invaluable opportunity to grow your skills and gain hands-on experience in the tech industry.In this position, you will:Develop and maintain high-quality code with over 80% coverage, ensuring thorough documentation.Design and enhance components in our component library for improved functionality.Make proactive recommendations, prototype new features, and provide constructive feedback.Collaborate closely with the QA engineering team to ensure product quality.Communicate effectively with fellow engineers, product managers, clients, and partners.

Join AECOM as a Rail and Transit Engineering Intern and immerse yourself in the dynamic field of transportation engineering. This role is designed for students or recent graduates eager to contribute to innovative rail and transit projects. You will work closely with seasoned professionals, gaining invaluable hands-on experience while helping to shape the future of public transportation.

Join Sixt, a leading global car rental company, as a Vehicle Reconditioning Arbitrator in Los Angeles! In this pivotal role, you will oversee the quality and condition of our fleet, ensuring that every vehicle meets our high standards of excellence. Collaborate with mechanics and repair teams to facilitate effective reconditioning processes that enhance our customer experience.

Join Hadrian in Shaping the Future of ManufacturingAt Hadrian, we are on a mission to revolutionize the aerospace and defense manufacturing landscape through our state-of-the-art autonomous factories. Our innovative approach enables companies to manufacture rockets, satellites, jets, and ships at speeds up to 10 times faster and at costs reduced by half. By integrating cutting-edge software, robotics, and comprehensive manufacturing solutions, we are redefining the production of America's most essential components.Recently, we secured a $260 million Series C funding to expedite our vision. We are thrilled to open a new state-of-the-art Factory in Mesa, Arizona—a sprawling 270,000 square foot facility that will create 350 immediate job opportunities. Furthermore, we are establishing a new headquarters to accommodate thousands of hires in the future, launching Hadrian Maritime to support naval production, and introducing our Factory-as-a-Service model for delivering holistic systems instead of mere parts.We collaborate with startups, Tier 1 and Tier 2 suppliers, and major defense contractors across industries such as space, shipbuilding, and aviation to enhance production, drive down costs, and expedite delivery of mission-critical initiatives. Backed by prominent investors like Lux Capital, Founders Fund, and Andreessen Horowitz, our rapidly expanding team is united by a singular goal: to modernize American manufacturing for the 21st century and beyond!Your RoleAs a Backend Software Engineer, you will engage with multiple internal products and teams:Flow is our flagship FactoryOS platform, housing applications that model, manage, and automate an intricate web of factories.Copilot offers a suite of automation products that enhance or expedite crucial factory processes, including quoting, CAM programming, and CMM programming.Factory Automation is responsible for creating robotic solutions for our factories along with the software that powers them.Prospective candidates will find diverse opportunities to innovate within our extensive backend services and applications, particularly in redefining manufacturing software, from distributed systems to automation infrastructures.Key ResponsibilitiesDesign, architect, implement, and deploy critical backend services across various product lines.Develop and maintain robust, scalable, and high-performance APIs and systems tailored for a complex production environment.Collaborate with manufacturing and software experts during product discovery to determine essential features and improvements.

Join Freeform Future Corp as a Senior Embedded Software Engineer! In this role, you'll be at the forefront of developing innovative software solutions for embedded systems. Collaborate with a talented team to design, implement, and optimize software that powers our cutting-edge products. Your expertise will be essential in driving the success of our projects, ensuring high performance and reliability.

The aerospace industry faces a critical demand for innovative spacecraft solutions. With the recent surge in launch vehicles and decreasing costs to orbit, a growing number of companies are entering the space sector, necessitating advanced commercial spacecraft platforms, known as satellite buses. These satellite buses are essential for carrying payloads into space and are designed for optimal performance during launches.At Apex, we specialize in manufacturing these satellite buses at scale, leveraging cutting-edge technology in software, vertical integration, and hardware tailored for efficient manufacturing processes. Our spacecraft play a pivotal role in shaping the future of society, contributing to applications ranging from Earth observation to advanced communications.Join us on our mission to provide humanity with access to the galaxy beyond our planet!

Join Hadrian - Shaping the Future of ManufacturingAt Hadrian, we are revolutionizing the aerospace and defense sectors by creating autonomous factories that enable the manufacturing of rockets, satellites, jets, and ships up to 10 times faster and at half the cost. By integrating cutting-edge software, robotics, and comprehensive manufacturing solutions, we are transforming how America produces its most essential components.With a recent influx of $260 million in Series C funding, we are poised to accelerate our mission. We are launching a state-of-the-art Factory in Mesa, Arizona, spanning 270,000 square feet and creating 350 immediate job opportunities. Additionally, we are establishing a new headquarters to accommodate thousands of future hires, unveiling Hadrian Maritime for naval production, and introducing a Factory-as-a-Service model that provides complete systems rather than just individual components.Hadrian collaborates with startups, Tier 1 and Tier 2 suppliers, and major defense contractors in the realms of space, shipbuilding, and aviation to enhance production capabilities, cut costs, and expedite delivery on mission-critical projects. Supported by leading investors such as Lux Capital, Founders Fund, and Andreessen Horowitz, our rapidly expanding team is dedicated to reindustrializing American manufacturing for the 21st century and beyond!Your RoleAs a Frontend Software Engineer, you will have the opportunity to collaborate with various internal products and teams. You will work on:Flow, our FactoryOS platform that encompasses a diverse range of applications designed to model, manage, and automate our intricate network of factories.Copilot, a suite of manufacturing automation tools that streamline essential factory processes like quoting, CAM programming, and CMM programming.Factory Automation, where you will help develop robotic cells and the software that governs them.This role offers ample opportunities for those passionate about redefining manufacturing software to make a significant impact.Your ResponsibilitiesDesign, architect, and deploy vital applications across various product lines.Collaborate with manufacturing and software experts during product discovery to identify needs and enhancements.Work alongside a talented team of engineers and operators to bring innovative solutions to life.

Join Hermeus as a Test and Operations Engineering Intern for the Summer/Fall 2026 session! This is a unique opportunity to work at the forefront of aerospace technology, contributing to the development of rapid and efficient air travel solutions. As an intern, you will collaborate with experienced engineers on innovative projects, gaining hands-on experience in testing and operations.

At K2 Space Corporation, we are pioneering the development of the world's largest and most powerful satellites, enabling unprecedented performance across all orbits. With an impressive backing of $450 million from prestigious investors like Altimeter Capital, Redpoint Ventures, and Lightspeed Venture Partners, along with an additional $500 million in contracts from commercial and U.S. government clients, we are revolutionizing satellite manufacturing and operations.The advent of heavy-lift launch vehicles marks a transformative shift in the aerospace sector from mass constraints to mass abundance. This evolution necessitates a new category of spacecraft, designed to withstand extreme radiation environments and fully leverage today’s, and tomorrow’s, powerful rockets. K2 satellites provide unparalleled capabilities at a constellation scale across diverse orbits.With numerous launches scheduled through 2026 and 2027, we are committed to developing the solar system and advancing towards becoming a Kardashev Type II civilization. If you are an enthusiastic individual who thrives in a dynamic environment and is eager to contribute to the success of a groundbreaking Series C space startup, we encourage you to apply.Our enterprise software team is integral to K2 Space’s mission, developing the digital infrastructure that supports satellite design, manufacturing, and mission operations. We create tools that seamlessly connect engineering, production, and mission control, accelerating our hardware's journey from concept to orbit.

Join us at Oscar, where we are on a mission to redefine health insurance through technology! We are excited to invite talented Staff Software Engineers to become a part of our dynamic Engineering team. Founded in 2012, Oscar is pioneering a health insurance model centered around a comprehensive technology platform that prioritizes the needs of our members. We aim to create a health insurance experience that feels as supportive and caring as a family doctor. Role Overview We are looking for Staff Software Engineers with a fullstack focus (leaning towards frontend) to collaborate with various teams across our Engineering organization. In this pivotal role, you will spearhead technical initiatives aimed at developing dependable and maintainable applications, infrastructure, and user interfaces that streamline interactions with the healthcare system for both our members and providers. You will report to a leader within the Engineering Organization (Associate Director or higher). Work Location: This position is based in our Los Angeles office, requiring a hybrid work schedule with three in-office workdays per week. Thursdays are mandatory in-office days for team meetings and events, while the other two office days offer flexibility to accommodate your schedule. #LI-Hybrid Compensation Transparency: The base salary for this role ranges from $192,000 to $252,000 per year. Additionally, you will have access to employee benefits, participation in Oscar's unlimited vacation program, potential company equity grants, and annual performance bonuses.