Digital Twin Software Engineer - ReOrbit

ReOrbit is looking for a Digital Twin Software Engineer to join our team and support the development of distributed digital twin software systems for our current satellite product lines. This is an opportunity to work at the intersection of simulation, real-time software, telemetry, networking and system control. You will help build the software foundations that allow complex satellite systems to be modelled, tested, validated and evolved with speed and confidence. As our Digital Twin Engineer, you will enjoy solving difficult technical problems, writing clean and reliable code, and working closely with multidisciplinary engineering teams. You do not need to have spent your entire career in the space industry, but you should bring strong software engineering fundamentals, curiosity, and the ability to build robust simulation and real-time software systems. It's an exciting chance to join a dynamic start-up, with the opportunity to make a real impact, to reach our goal of pushing the boundaries of space data transfer. This job can be based in our headquarter in Helsinki, Finland or Bengaluru, India. Responsibilities include implementing distributed digital twin software systems, building telemetry, messaging and networking layers, developing simulation and system-control components, supporting real-time and distributed software development, rapid prototyping, writing clean, testable, production-oriented code, contributing to software reviews, testing, validation, verification, supporting hardware-in-the-loop and software-in-the-loop integration, and improving development practices. Requirements include a Bachelor's degree in Physics, Computer Science, Software Engineering or similar, 2+ years’ experience in software development, strong object-oriented C++ skills, experience with software engineering best practices, knowledge of hardware-in-the-loop and software-in-the-loop, real-time software development experience, ability to analyze and improve projects independently, self-motivation, curiosity, good English skills, and experience with space or satellite systems. Preferred skills include developing proof-of-concepts, knowledge of distributed systems, telemetry, messaging, networking, simulation frameworks, and multidisciplinary teamwork. ReOrbit builds the foundation for next-generation space applications by transforming satellites into interconnected platforms with software. The company offers a challenging environment, a motivated team, benefits like lunch vouchers, events, occupational health care, and supports relocation. Join us in building software-enabled satellites for secure communications and space data flow.