Software Engineer - Full Stack

We are looking for a software development lead for Leia, our easy-to-use mission analysis tool. The software's core functionality is in beta testing and your role will be to lead the development to a fully released product and incorporate more capabilities from this point onward.

Our flight dynamics team codes the algorithms. You will build the product around it, owning architecture end to end: API, front-end, database, containerization, and deployment.

This is the first dedicated software engineering hire at Vinterstellar and a key position. We foresee that the software team will grow under the lead of the person filling it.

WHAT YOU WILL WORK ON

• Back-end: expose the analytical engine as REST API.
• Front-end: mission configuration, results display, and dashboards
• Database design, user management, and audit trail
• Containerization, CI/CD, and deployment (cloud and self-hosted)
• 3D orbit visualization, building on our existing online orbit calculator
• Report generation and structured data export
• Over time: natural language query features, additional web services, and data interfaces for space situational awareness

WHAT WE ARE LOOKING FOR

Mid-level candidate, 3–5 years of experience building production web applications.

• Willing to work across the full stack as the primary builder in a small team
• Strong Python skills; experience with FastAPI, Django, or similar frameworks
• JavaScript or TypeScript with a modern front-end framework (React preferred)
• Comfortable with databases, Docker, and basic DevOps
• Curiosity about space, scientific computing, or complex engineering domains — you do not need to be a rocket scientist, but you should want to understand what the platform does

USEFUL BUT NOT REQUIRED

• Familiarity with Three.js, WebGL, or data visualization libraries
• Interest in LLM integration and AI-assisted interfaces
• Experience with CI/CD pipelines and infrastructure-as-code

REQUIREMENTS

• Fluent in English; Swedish is a plus
• EU or EEA citizen

ABOUT VINTERSTELLAR

Vinterstellar is a Stockholm-based aerospace company doing mission analysis and flight dynamics for satellite operators and space agencies — from GEO telecommunications to Earth observation to deep-space trajectory design. Founded in 2018, we are five people and growing, with multiple funded development projects running and a product evolving into a decision-oriented mission analysis platform for the European market.

At Vinterstellar you will have real ownership from day one. Together we work hybrid and have a lot of freedom when it comes to structuring our time and the way we want to work.

HOW TO APPLY

Send your CV and a short note about yourself to:

Applications:

Role questions: Emil Vinterhav, CEO —

Process questions: Andreas Thorell Berchtold —

Applications are reviewed on a rolling basis. We hire as soon as we find the right person.