(Junior) Full-Stack Developer in Spain (f/m/d)

Your mission

Your mission is to develop and maintain intuitive, high-performance web applications and APIs that provide seamless access to OKAPI:Orbits’ end-to-end solutions across Mission Design , Space Situational Awareness (SSA) , Space Traffic Management (STM) , Flight Dynamics (FD) , and Space Traffic Coordination (STC) — supporting theentire lifecycle of satellite operators . You design and implementelegant user interfaces and robust service integrations that connect complex space-data pipelines with an accessible, reliable user experience. You work on the systems thatenable satellite operators and space agencies to visualize, plan, and manage their missions efficiently in an increasingly dynamic orbital environment. Research shows that women are less likely than men to apply for a position unless they meet 100% of the listed requirements. Please know that if it’s your case — but you are passionate about space technology , building reliable software , andcontributing to a more sustainable space environment — we strongly encourage you to apply. OKAPI:Orbits already brings together a highly diverse team, and we actively continue to strengthen this diversity, as research consistently shows that heterogeneous teams achieve higher performance and drive innovation .

Your tasks and responsibilities

• Develop and maintain modern web frontends using Next.js and backend APIs using Node.js
• Implement user-friendly, performant, and secure web applications for satellite operators and space agencies
• Support the development and maintenance of interfaces between frontend, APIs, and backend services, including authentication and data flow
• Collaborate with scientists, engineers, and senior developers to translate domain requirements into practical software solutions
• Contribute to frontend architecture, performance, usability, and maintainability under guidance from experienced team members
• Implement features based on technical concepts and help document implementations and workflows
• Write clean, well-structured code and contribute to automated tests and quality assurance
• Support CI/CD pipelines, monitoring, and automation as part of a collaborative development process
• Analyze and fix issues across frontend and backend layers with support from the team
• Work in small, interdisciplinary teams and actively contribute to full-stack development tasks

Your profile

Must-haves

• Degree in Computer Science, Software Engineering, or a related field, or completed vocational training in IT
• 1–3 years of practical experience in web development with React.js, Node.js, and TypeScript (or equivalent project experience)
• Solid understanding of JavaScript fundamentals and asynchronous programming
• Practical experience with MongoDB or comparable databases, including basic data modeling and queries
• Experience building or consuming RESTful APIs
• Familiarity with Git-based workflows, pull requests, and collaborative development
• Willingness to learn, ask questions, and grow as a full-stack developer
• Focus on readable, maintainable code and basic testing practices
• Team-oriented mindset and clear communication skills
• Good English, written and spoken

Nice-to-haves

• First experience with Next.js (SSR, ISR, or App Router)
• Basic experience with Docker or container-based development
• Exposure to CI/CD pipelines or automated testing
• Familiarity with monitoring or error-tracking tools (e.g. DataDog)
• Interest in space, aerospace, or complex technical domains

Why us?

• Flat hierarchy , small teams , flexible hours
• Onboarding in Braunschweig , afterwards remote from Spain
• Early ownership, influence technical direction
• Training budget for continuous development
• German classes via Lingoda
• Join space events and conferences , advocate for sustainable space