Full-Stack Engineer

Relu; Town of Belgium (WI); On-site; USD 63,000 - 104,000; Full time

Job summary

Relu in Leuven is seeking a Full-Stack Engineer for its Platform team. You will work on the web app, 3D viewer, workflow automations, integrations and infrastructure that dental professionals rely on daily.

You'll combine frontend (Vue.js, TypeScript, Three.js) and backend (Python, FastAPI) work to build scalable features, robust integrations with CAD/CAM APIs, and reliable observability across the platform. This is an on-site role at our Leuven office with a collaborative, fast-moving culture.

Qualifications

• MSc in Computer Science or related field.
• Experience with front- and/or back-end related work.
• Fluent in English (written and spoken).
• Valid work authorization in Belgium.
• Able to work from Leuven office at least 3 days per week.

Responsibilities

• Build and scale the web platform used by thousands of users globally.
• Develop agents for the dental lab's digital backbone and automate workflows.
• Design and implement slick user interfaces with a user-focused mindset.
• Ship features for the 3D mesh viewer, editing tools, and visualization controls.
• Create and Harden integrations with scanners, printers, CAD/CAM partners, ERPs.
• Improve reliability and observability across the platform.

Skills

Vue.js

TypeScript

Three.js

Python

FastAPI

PostgreSQL

SQLAlchemy

AWS

Terraform

CI/CD

Docker

Kubernetes

Sentry

Grafana

Education

MSc in Computer Science

Tools

Docker

Kubernetes

AWS

Terraform

CI/CD

Job description

Your mission

Are you passionate about technology with a purpose? Want to make a meaningful impact on people's health? Want to work in an AI-native company? At Relu, we're growing - and we're looking for someone like you. We're looking for a Full-Stack Engineer to join our Platform team; the web app, 3D viewer, workflow automations, integrations and infrastructure that hundreds of dental professionals rely on every day. You will:

• Build and scale our web platform used by thousands of users globally, and ensuring that it can handle the growing amount of users & orders.
• Build agents that run the digital backbone of a dental lab; automating everything from patient scan intake and order entry to customer emails and 3D print queues.
• Think from a user’s perspective to design & implement slick user interfaces.
• Ship features across our 3D mesh viewer; editing tools, visualization controls and model handling.
• Build and harden integrations with scanners, printers, CAD/CAM partners, ERPs and more.
• Improve reliability and observability across the platform.

Your profile

We're open on experience level. What matters is that you have some real hands-on experience: an internship, your own projects, or applied work with others. Whether you're fresh out of your Master's or have a few years of front-end work behind you, if you're smart and ready to contribute, we want to hear from you.

What you should bring to the team:

• You can find your way around both a frontend (TypeScript/React) and a backend (Python/FastAPI) codebase. You don't have to be expert in both, but you're not afraid of either.
• A working understanding of databases and APIs, and the curiosity to reason about *why* something behaves the way it does (transactions, race conditions, third-party integrations with auth and rate limits).
• You can debug: when something breaks, you dig in with logs, metrics and error-tracking tools rather than guessing.
• You care that the code you ship works and doesn't break things around it.
• You have an eye for design, and think from a user-perspective to build excellent UX.

The 'Nice-to-haves':

• Experience with 3D graphics on the web (Three.js / WebGL), meshes, or medical/scientific visualization.
• Familiarity with cloud infrastructure and DevOps (AWS, CloudFront, CI/CD, observability tooling).
• Exposure to dental, medtech or CAD/CAM domains.
• Comfort building with and alongside AI/LLM tooling.

How you work:

• You think sharply, and you'll be surrounded by people who do the same.
• You're an independent thinker: you don't blindly implement tickets. You think through the consequences and connections of your work and find smart solutions to problems.
• You're reliable — people can count on you to see things through.
• You communicate. You pick up a ticket, ask questions when in doubt, and then execute until it's done — without breaking other things along the way. We don't work in silos.

Our Tech Stack = Your Tech Stack:

• Frontend: Vue.js, TypeScript, Three.js
• Backend & APIs: Python, FastAPI
• Data & Databases: PostgreSQL, SQLAlchemy
• Infrastructure & DevOps: AWS, Terraform, CI/CD, Docker, Kubernetes
• Observability: Sentry, Grafana, Faro RUM
• Integrations & Partners: 3Shape, iTero, Medit Link, Formlabs, and a growing list of scanner/printer/CAD-CAM APIs

Practical Requirements / Eligibility:

• MSc in Computer Science or something related
• Experience with front- and/or back-end related work
• 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 transforming dental care to make high-quality dentistry accessible globally.
• A fast-moving team that ships: A collaborative, ambitious team that executes at hyper-speed while keeping the day-to-day genuinely fun.
• A dream workspace: A sunny office with stunning views over Leuven, park walks, and coffee by the Vaartkom.
• A vibrant culture: Regular after-works, sports sessions, hackathons, and company retreats.
• Uncapped growth: The opportunity to grow into broader roles as the company — and you — scale.