Frontend / Full Stack Software Engineer

At S[&]T we contribute to a safer life on Earth by translating space data into valuable and actionable insights. With this, we help organizations, governments and commercial entities to strengthen their information position and thereby improve their decision-making. We focus on 4 domains: Space & Science, Defence & Security, Environment & Sustainability and the High-Tech Industry. We control all levels of the data value chain from data source to user applications, and apply our expertise within our innovations, customer projects and talent acquisition services. Our headquarters are in Delft, The Netherlands and we have two satellite offices in Oslo, Norway and Rome, Italy with a total of 125 experts employed at S[&]T

About this Job

We are currently looking for a Frontend / Full Stack Software Engineer to join our Defence & Security team in Delft.

Satellite operations are becoming increasingly complex. With more satellites, more diverse missions, and growing demands for automation and operational efficiency, mission operators require ground segment solutions that are flexible, scalable, and easy to adapt. Traditional ground segment solutions are often highly customised for individual missions, limiting scalability and increasing operational complexity.

At S&T we are developing software solutions for clients who operate their own satellite constellations. We are developing a satellite Mission Control System, which can operate multiple satellites from different providers in one single system. With this development we are changing the approach of traditional ground segment solutions by developing a modular, software-first ground segment platform that combines reusable building blocks for mission planning, tasking, satellite operations, monitoring, and data workflows. Our ambition is to create a scalable operational environment that enables efficient management of current and future satellite missions, reduces complexity, and accelerates mission deployment across civil, commercial, and defence applications.

As a Frontend / Full Stack Software Engineer you will be part of our Mission Control System development team. Here you will be designing the frontend of this system for our end client. Beside this, you will can develop your backend skills or work on the frontend of other projects for clients such as the European Space Agency.

The team is part of the Intelligence, Surveillance & Reconnaissance (ISR) program, a team of 12 (and growing) enthusiastic and social developers, data scientists and FPGA-engineers. The team develops solutions for Earth Observation data processing, both on-ground or on-board satellites. ISR is part of the Defence & Security unit, where we are working on innovative solutions that leverage space technologies for Defence and Security.

Main Responsibilities

• Develop Modern Applications

• Design and develop user-friendly applications for defence.

• Build intuitive interfaces that present complex technical and operational satellite information in a clear and actionable way.

• Develop and maintain backend services and APIs supporting frontend applications.

Collaborate Across Disciplines

• Work closely with software engineers, system architects, domain experts, and end-users.

• Translate operational requirements into scalable and maintainable software solutions.

• Participate in technical discussions and contribute to system design decisions.

Deliver High-Quality Software

• Develop secure, reliable, and maintainable code.

• Contribute to software testing, validation, and continuous improvement activities.

• Support deployment, integration, and lifecycle management of software systems.

Contribute to Innovation

• Explore and implement new technologies, frameworks, and development approaches.

• Support the development of next-generation Defence & Security capabilities.

• Contribute to proof-of-concepts, demonstrations, and customer-facing projects

Requirements

Education & Experience

• Bachelor's or Master's degree in Computer Science, Software Engineering, Information Technology, or a related field.

• Experience in frontend or full stack software development.

• Experience developing modern web applications.

Technical Skills

Experience with some of the following:

• TypeScript / JavaScript

• React, Angular, Vue.js, or similar frontend frameworks

• HTML5 and CSS

• REST APIs

• Node.js, Python, Java, or C#

• Docker and containerised environments

• Git and modern software development practices

• Agile/Scrum methodologies

Nice to have

• Experience with GIS or geospatial applications.

• Experience with real-time data processing and visualisation.

• Experience within Defence, Aerospace, Security, or Critical Infrastructure sectors.

• Knowledge of Command & Control systems.

• Experience working in secure or classified environments

Personal skills

• Strong analytical and problem-solving skills.

• Ability to communicate technical concepts clearly.

• Team-oriented and proactive mindset.

• Interest in Defence, Security, and high-tech innovation.

• Ability to obtain the required EU security clearances

Languages

• Good command of English.

• Dutch is considered a strong advantage.

What we Offer

• Competitive salary between €3,500 – €5,000 gross/month (based on experience, full-time)

• The opportunity to work on innovative technologies with real operational impact.

• Challenging projects within the Defence & Security domain.

• Collaboration with highly skilled engineers and domain experts.

• A modern and flexible working environment.

• The opportunity to contribute to solutions that help protect people, infrastructure, and society.