Software Engineer - Internship

Your mission
Are you passionate about technology with a purpose? Want to make a meaningful impact on people's health? At Relu, we're growing - and we're looking for someone like you.
We're looking for a Software Engineering Intern to own our Software/Platform team. You will:
Design
AI Agents that can automate the full end-to-end workflow
of a dental lab; from order intake, through digital design of dental appliances, to manufacturing (e.g. 3D printing) and delivery
Build and scale our web platform used by thousands of users
globally, ensuring it can handle growing user volumes and orders
Develop
powerful 3D web tools and viewers
, allowing our users to inspect and edit the AI proposals, ranging from CAD editing to end-to-end implant treatment planning.
Think from the user's perspective to
turn complex workflows into intuitive experiences
Design and implement
slick user interfaces
with a focus on user-friendliness and efficiency
Build clean, reusable, and testable software components
Your profile
What you should bring to the team:
Currently pursuing a Master's degree in Computer Science, Software Engineering, Engineering, or related field
Solid understanding of at least one modern programming language (Python, JavaScript, Java, or C++)
Basic knowledge of software development principles and version control (Git)
Strong UX and design sensibilities
Available for a minimum 6-week internship, ideally longer
Strong problem-solving skills and eagerness to learn in a fast-paced environment
Good communication skills in English
The 'Nice-to-haves':
Prior internship or project experience in software development
Already in your Master's
Familiarity with web technologies (React, Node.js) or cloud platforms (AWS, Azure, GCP)
Interest in AI/ML applications or healthcare technology
Experience with agile development methodologies
Experience in building complex web applications
How you work:
Collaborative team player who actively seeks feedback and guidance
Proactive and self-motivated with ability to work independently when needed
Curious mindset with willingness to tackle diverse technical challenges
Adaptable and comfortable with ambiguity in a scale-up environment
Our Tech Stack = Your Tech Stack
Frontend: Vue.js, React, TypeScript, Three.js, TanStack, Figma
Backend & APIs: Python, FastAPI
Infrastructure & DevOps: Docker, Kubernetes, Terraform
Practical Requirements / Eligibility:
Fluent in English (written and spoken)
Valid work authorization in Belgium
Able to work from our Leuven office at least 3 days per week
Why us?
A mission that matters: we're improving dental care and making higher-quality dentistry accessible to everyone, globally
A fast-growing company where your growth goes hand-in-hand with ours — real impact, real ownership, early responsibility and skills in the technologies of the future
The chance to work with the latest AI technologies and industry leaders in dentistry
Fun team culture: after-works, bi-weekly sports, hackathons, retreats