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(Senior) Full-stack Developer (Next.js / Node.js)

OKAPI:Orbits

OKAPI:Orbits

Software Engineering
Munich, Germany · Germany · Remote
Posted on Oct 23, 2025
Your mission
Your mission is to develop and maintain a reliable API and an elegant, high-performance web frontend for 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) — serving the full lifecycle of satellite operators.
You build the interface through which commercial constellation operators and space agencies access and control OKAPI:Orbits services.

Your tasks and responsibilities
  • Design, develop, and maintain scalable web frontends using Next.js and Node.js-based APIs
  • Implement and optimize user-friendly, high-performance, and secure web applications for satellite operators and space agencies
  • Design and maintain interfaces between frontend, API, and microservices, including authentication, authorization, and data flow management
  • Collaborate closely with scientists and engineers to translate complex domain requirements into user-centric software solutions
  • Take ownership of frontend architecture, performance, usability, and maintainability
  • Plan and document implementation steps, from technical design to production deployment
  • Ensure code quality, automated testing, and adherence to security and development standards
  • Contribute to the improvement of CI/CD pipelines, monitoring, and automation to support reliable and continuous delivery
  • Analyze and resolve complex issues across frontend, API, and data layers with a focus on reliability and user experience
  • Work in small, interdisciplinary teams, bringing your full-stack expertise into cross-functional projects
Your profile
Must-haves
  • Degree in Computer Science, Software Engineering, or a related field, or formal IT specialist training
  • Several years of hands-on experience building production-grade applications with React.js, Node.js, and TypeScript
  • Deep understanding of JavaScript fundamentals, asynchronous programming, and modern ECMAScript features
  • Strong MongoDB expertise: schema design, data modeling, indexing, aggregation, and performance optimization in high-load systems
  • Experience with RESTful API design and integration, including authentication, authorization, and versioning
  • Familiarity with Git-based workflows, pull requests, and collaborative code reviews
  • Proven ability to debug complex issues across frontend, backend, and data layers
  • Focus on clean, maintainable code, testing, and long-term software reliability
  • Proactive communication and team-oriented mindset, comfortable working in distributed setups
  • Good English, written and spoken
Nice-to-haves
  • Experience with Next.js 15+, including React Server Components, SSR, or ISR for performance-optimized frontends
  • Experience with Docker and Kubernetes for local development, deployment, and scaling of services
  • Familiarity with microservice architectures and message-based communication (e.g., RabbitMQ)
  • Experience with Python or Java, particularly for backend or data-processing pipelines
  • Knowledge of CI/CD tools (GitLab CI) and frontend testing frameworks (Cypress, Vitest, Jest)
  • Experience with monitoring and observability (DataDog, Sentry, OpenTelemetry)
  • Exposure to 3D visualisation frameworks such as CesiumJS or WebGL libraries
  • Interest or experience in the space or aerospace domain
  • Experience in mentoring or technical leadership within agile teams
Why us?
  • Flat hierarchy, small teams, flexible hours
  • Onboarding in Braunschweig, afterwards on-site in Brunswick, or hybrid in Brunswick or Munich
  • Early ownership, influence technical direction
  • Training budget for continuous development
  • Corporate benefits like BahnCard 25/50, bike leasing, German classes via Lingoda
  • Join space events and conferences, advocate for sustainable space
  • Free office drinks, monthly company lunch, regular after-work activities
About us
OKAPI:Orbits is at the forefront of space sustainability, addressing some of the most pressing challenges of the space industry: the growing problem of crowded orbital regimes, and the need for more efficient satellite operations. We're providing end-to-end solutions that help various space industry players cover their Space Situation Awareness (SSA), and Space Traffic Management and Coordination (STM & STC) needs. We are committed to safeguarding space missions and access to space for all humanity. Join us on our mission.