Hey, I'm

Léo Sauvage

Full Stack Developer

I build backends, ship frontends, and break things in between

About

A bit about me

I build things for the web, mobile, and sometimes just for fun. I spend most of my time writing TypeScript and wiring up distributed systems — but I'm just as comfortable putting together a frontend or deploying containers. I care about code quality (Biome, ESLint, strict types) and I like when things are well-structured.

Backend first

Node.js, message queues, microservices — I like the plumbing side of things

Frontend too

Svelte when I can, React/Vue when I have to. Tailwind everywhere.

Mobile & native

React Native for cross-platform, Kotlin when I need to go native on Android

Side projects

Discord bots, a text MMORPG, aeroclub management apps — I like to ship stuff

Work

Where I've worked

🚀

VSK Studio

CEO & Co-founder

2025 - Present

CEO and co-founder of a custom web development studio
Modern websites and web apps for clients (React, TypeScript, Docker)
End-to-end project ownership: design, development, deployment and maintenance
Leading the business, strategy and client relationships

🌱

Green Ideas

Full Stack & Mobile / DevOps

2024 - 2025

Built custom PrestaShop modules for e-commerce clients
Shipped a cross-platform mobile app in React Native
Wrote native Android modules in Kotlin for solar inverter monitoring
Built web interfaces with Vue.js
Handled deployment and containerization with Docker
Bug fixing, maintenance, and managing evolutions on existing codebases

🏥

Calais Hospital

Full Stack Developer

4 months

Built a test generator app from scratch for an EAI server (both frontend and backend)
Maintained and improved a Symfony app for account management
Handled deployment to production

Stack

What I work with

Backend

Node.js

TypeScript

JavaScript

Symfony

PHP

Python

Java

Rust

C++

Frontend

Svelte

React

Vue.js

Tailwind

React Native

Liquid

Twig

Electron

Discord.js

Data & ORM

PostgreSQL

MySQL

Prisma

Drizzle

Sequelize

DevOps & Tooling

Docker

Git

RabbitMQ

Biome

ESLint

Grafana

Linux

Shopify

PrestaShop

WordPress

Arch

Projects

Things I've built

White

Text-based MMORPG on Discord

A text-based MMORPG running entirely on Discord. A TypeScript microservice architecture where each service talks over RabbitMQ, with sharding for scalability, Drizzle ORM on PostgreSQL, Redis caching, and full observability (Prometheus, Grafana, Loki). All containerized with Docker.

Enderbot

Discord RPG bot — 6000+ cards

An advanced Discord RPG bot combining exploration, card collection (6000+ cards from games, anime & manga), economy, crafting, and multiplayer warfare. A pnpm monorepo in TypeScript with Prisma on PostgreSQL and a SvelteKit + Tailwind web dashboard. Free-to-play, running since 2017.

Aeroclub Electron

Desktop app — Electron + Symfony

Desktop application combining an Electron frontend with a Symfony backend. Manages aeroclub members, flights and aircraft with a native-feel interface powered by PHP.

Aeroclub Symfony

Web app for an aeroclub

Symfony web application for managing an aviation club. Member management, flight logs, and admin dashboard with Twig templates and PostgreSQL.

Ganyu.fr

Discord community bot

A Discord bot for community management, written in TypeScript with Discord.js, Prisma and PostgreSQL — leveling (100+ levels with automatic role rewards), economy with daily/hourly rewards and a gacha with pity system, mini-games, moderation, and custom welcome messages. Svelte dashboard and public API, all deployed with Docker.

Education