Full-Stack Internship Opportunity

Telespazio Be; Katwijk; On-site; EUR 3,300 - 6,700; Full time

Job summary

Telespazio Belgium invites highly motivated interns for a Full-Stack Intern position at our SCoE in Katwijk aan Zee. You will work on end-to-end features including DB schemas, REST APIs in Spring Boot, and a React UI using Mantine, helping to build CRUD tables, filters, and dashboards.

Under mentorship, you will write automated tests, commit meaningful changes, and own small slices of the product from design to completion.

Qualifications

• Pursuing a WO/HBO/Bachelor with interest in full-stack development.
• Familiar with Java/Kotlin, Spring Boot, REST and JSON.
• Basic React+JS/TS knowledge and using a component library.
• SQL basics and ability to write simple queries.
• Git/GitLab basics and English document reading.

Responsibilities

• Implement end-to-end features including DB schema, REST APIs in Spring Boot, and UI with React + Mantine.
• Build CRUD tables with filtering/sorting, validated forms, and simple dashboards.
• Add CSV import flows with server-side validation and UI feedback.
• Write automated tests (unit/integration) and keep code clean.
• Under mentorship, own small slices of the product from design to done.

Skills

Java fundamentals

Kotlin

Spring Boot

REST

JSON

React

JS/TS

Mantine

SQL fundamentals

GitLab basics

English reading

Kotlin experience

Education

Dutch WO or HBO student

Tools

Mantine UI

Job description

At Telespazio Belgium, we are committed to fostering collaboration with universities and students. Whether you're pursuing a master's degree, HBO, or a bachelor's degree, and you are looking for an internship opportunity, we offer a dynamic environment where you can apply your knowledge and skills to real-world projects. We believe in nurturing talent and providing opportunities for growth and innovation.

Are you ready to embark on a journey where innovation meets the stars? Telespazio Belgium, a pioneering leader in satellite services and solutions, invites dynamic and imaginative individuals to join our team through our exciting internship program.

We provide a significant contribution to the major Space programs of the European Space Agency. Our core business is to work on the ground to build bridges into space, contributing to the success of ambitious missions.

We are looking for a highly motivated Full-Stack Intern to join our Service Centre of Excellence (SCoE) at our office in Katwijk aan Zee. The SCoE drives innovation by introducing new technologies and best practices, delivers centralised expertise and service support, and identifies strategic market opportunities.

You are going to gain experience in implementing end-to-end features (DB schema, REST APIs in Spring Boot, and UI with React + Mantine), building CRUD tables with filtering/sorting, validated forms, and simple dashboards, and adding CSV import flows (server-side validation and UI feedback). Also, you will develop your skills in writing automated basic tests (unit/integration), keeping code clean, writing small PRs, writing meaningful commit messages, and, under mentorship, owning small slices of the product from design to done.

What is expected from you:

Must-have

• Java fundamentals and a strong willingness to learn Kotlin.
• Basics of Spring Boot (controllers, services), REST, JSON.
• Basics of React + modern JS/TS; comfortable with a component library (Mantine or similar).
• SQL fundamentals; able to model simple data and write basic queries.
• Git/GitLab basics; can branch, commit, open MRs, and resolve conflicts.
• English for reading docs; clear, concise written communication.

Nice-to-have

• Any Kotlin experience.
• Spring Security basics, JWT/cookie auth.
• Testing (JUnit/Mockk)

What we offer and how does it work:

We expect the internship to start in September, and last for 6 months.

The selection process will comprise two interviews, with a simple assignment to be completed asynchronously between them. We start with a Teams meeting to get to know you better and understand your attitude. If it’s a match, you’ll receive a short assignment where you can show us how you think and work. Finally, we invite you for a conversation with our SCoE team to dive deeper into the role and your motivation.

Please note that this internship opportunity is open to students who are currently living in the Netherlands and enrolled in a Dutch WO or HBO educational institution. Candidates must maintain their student status for the full duration of the internship.

For this internship we provide a monthly compensation between 300 to 600 euros.