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Julien Chapron

Full-Stack Developer

Lacroix-Falgarde (31), Toulouse · 07 67 75 77 80 · voyage7981@proton.me · github.com/Gleaming0427

Hello, I'm Julien Chapron

Full-stack developer and an AI enthusiast

I design REST and GraphQL APIs

Download my CVGet in touch

Seven years building web applications, mostly as part of a team. On my last mission I contributed to a documentation portal followed by 5,000 Renault engineers, then to fleet-supervision applications for about 200,000 electric vehicles. Alongside, I like shipping my own projects, tied to my tech watch.

journey

Seven years in production. Always in a team.

Three missions, from public research to the connected electric car.

5,000 users

200,000vehicles

under supervision.

The context

Four years on internal tools for electric vehicles, in teams of 3 to 11 developers across more than 20 repositories.

What I shipped

  • Documentation portal followed by 5,000 Renault engineers.
  • Two fleet back-ends: remote configuration and processing of the data sent back.
  • Docker / Kubernetes deployments, GitLab CI continuous integration, Jest and Cypress tests.
Role
Full-Stack Developer
Mission
CELAD, Renault Ampere Software Technology mission
Period
2022 – 2026

public research

4federated centres

Making atmospheric data findable.

The context

The AERIS data-pole catalogue, bringing together atmospheric data from four centres: satellite, ground, airborne and measurement campaigns.

What I shipped

  • Search interface evolutions: facets by parameter, instrument, platform and geographic coverage.
  • Reusable Vue.js components for the rest of the catalogue.
  • Integration of the pole's datasets into the interface.
Role
Front-End Developer
Mission
CNRS, AERIS data pole
Period
2022

front and back

3years

Tooling public consultation.

The context

Three years at a consultancy specialising in the transformation of organisations and territories, on its consultation and diagnosis applications.

What I shipped

  • Questionnaire and personality-test applications, front-end to back-end.
  • Vue.js front-end with Vuex, Laravel back-end, MySQL databases designed and integrated.
  • Real-time answers over WebSocket.
Role
Full-Stack Developer
Mission
Ethics Group
Period
2019 – 2021

skills

What I actually use. By hours spent.

On each row, the first two are where I have the most experience.

Languages

  • TypeScript
  • JavaScript
  • PHP
  • SQL
  • Python

Front-end

  • React.js
  • Vue.js (Vuex)
  • HTML / CSS
  • React Native
  • Astro

Back-end

  • Node.js (Express)
  • API REST
  • GraphQL
  • PostgreSQL
  • Laravel
  • MySQL

Cloud & infrastructure

  • Docker
  • Kubernetes
  • GCP
  • GitLab CI
  • Git
  • Linux

Testing

  • Jest
  • Cypress
  • Vitest

Practices

  • Agile / Scrum
  • code reviews

projects

Personal projects. Three shipped, one prototype.

A library on npm, an open-source vulnerability-analysis tool, an app on the Play Store.

project-01

api-gateway-core

Serverless API-gateway toolkit: token-bucket rate limiting, JWT validation and typed errors, with no cloud-provider dependency.

library published on npm

project-02

cve-triage

Finds the CVEs that actually matter in your code: cross-referenced against OSV/GHSA, analysed by reachability, with exact fixes.

project-03

Pims Pocket

Dual parent / child interface: multi-role architecture, code and PIN sign-in, real-time sync and Firestore security rules.

mobile pocket-money app

project-04

Reading a game board with AI vision

Full-stack app reading a game board from a photo: number, colour and tokens of each card, extracted by a vision model.

proof of concept