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