AI Engineer

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 an AI Engineer Intern to work in our Research & Development team. You will contribute to the core AI systems that power our dental automation platform:
• Support the development and improvement of AI models and pipelines used by thousands of dental professionals globally
• Contribute to real product tickets: bug fixes, feature work, or pipeline improvements that go into production
• Potentially own a scoped AI or engineering project end-to-end — from problem framing to a working prototype or shipped improvement
• Explore and evaluate new approaches (models, tools, techniques) relevant to our core AI stack
• Assist in data collection, preprocessing, and labeling to support model training and evaluation
• Analyze model performance and contribute to iterative improvements in accuracy and reliability

Your profile
What you should bring to the team:
• Currently pursuing a Master's degree in Computer Science, AI, Machine Learning, or related field
• Solid understanding of machine learning fundamentals and deep learning concepts
• Proficiency in Python and common AI/ML libraries (e.g. PyTorch, TensorFlow, NumPy, scikit-learn)
• Strong academic track record with relevant coursework in ML/AI
• Available for a minimum 6-week internship The 'Nice-to-haves':
• Familiarity with MLOps tools and practices
• Previous internship or research experience in AI/ML
• Already in your Master's
• Knowledge of dental or healthcare domain How you work:
• Eager to learn and comfortable asking questions in a fast-paced environment
• Self-motivated with ability to work independently on assigned tasks
• Strong communication skills to collaborate with researchers and engineers
• Analytical mindset with attention to detail in experiments and documentation
• Strong problem-solving and analytical skills Our Tech Stack = Your Tech Stack
• Backend & APIs: Node.js, Python, REST APIs
• Data & Databases: PostgreSQL
• 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 Ready to join us? Let’s talk—and together we’ll shape the future of AI in dentistry.

About us
Relu is a Leuven-based AI start-up automating the 3D design of dental appliances
- freeing up time, cutting costs, and improving global access to dental care. We’re a team of 25 engineers, business and dental people who:
• Learn fast
• Own what we do
• Get stuff done We are actively growing our team and our technology evokes more interest every day, expect your role to evolve over the years