JDD.

Software Engineer

JÉRÔME
DUPRAZ-DANGE

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About

Presentation

01

Passionate developer based in Strasbourg

JavaScript developer passionate about crafting digital experiences, now fully invested in AI. As AI Champion at SFEIR, I explore LLMs, agents and AI-assisted development daily, and share what I learn through writing. Always curious about the latest front-end technologies and ready to take on new challenges. Currently at SFEIR in Strasbourg, France.

8+
Years exp.
7
Certifications
02

Experiences

Tech Lead Front-End

August 2018 — Present

SFEIR, Strasbourg, France

Groupama Protection JuridiqueSeptember 2024 → Present
StellantisJuly 2023 → August 2024
StellantisMarch 2023 → June 2023
SwissRDLOctober 2021 → February 2022
VinciMarch 2021 → June 2021
Electricité de StrasbourgMarch 2020 → December 2020
PrintEuropeJanuary 2020 → June 2020
StellantisAugust 2018 → September 2019

Engineer Internship

March 2018 — July 2018

SFEIR, Strasbourg, France

Technician Internship

May 2017 — September 2017

Kameleoon, Offenburg, Germany

03

Education

General Engineering Degree

ECAM Strasbourg-Europe

04

Interests

Generative AICodingVideo EditingWeightliftingCinemaDesign 2D/3D
SKILLS

Skills

Technologies & Tools

Main

HTML
CSS
SASS
JavaScript
TypeScript
Angular
Vue.js
React
Angular Material
Tailwind
Bootstrap
Cypress
Git

Secondary

Next.jsNode.jsThree.jsVitePrismaMongoDBLangChainLangGraphDockerStorybookFigma

Certifications

Claude Certified Architect – Foundations

Google Cloud Generative AI Leader

Angular Level 3

Level 3

React Level 3

Level 3

Node Application Developer

MongoDB Associate Developer

GitLab Certified CI/CD Associate

Vue

GITHUB

Activity

GitHub Contributions

WORK

Projects

Work

Professional — SFEIR

01

Legal Insurance ManagementGroupama

An application for efficiently managing legal insurance contracts, from creation to tracking and renewal.

02

Payment ManagementStellantis

An application for managing payments, including maintenance and E2E testing setup.

03

Loan Estimate WidgetStellantis

An embeddable web component allowing users to simulate loan estimates for the purpose of buying a car.

04

Case Management

An application for managing customer cases, with new feature development and Angular expertise.

05

Medical FormsSwissRDL

An application for creating and managing dynamic forms for entering study results in the medical field.

06

3D Structure VisualizationVinci

An application for visualizing 3D structures and performing load calculations.

07

Energy ContractsElectricité de Strasbourg

An application for managing temporary and permanent electricity contracts. Replacing a GWT frontend with Angular.

08

Customizable PrintingPrintEurope

An Angular PWA for purchasing and customizing postcards, coasters and card games, with Firebase.

09

Contract ManagementStellantis

Management and processing of customer contracts and their availability through a website.

10

Fleet ManagementStellantis

A vehicle fleet management application composed of customizable widgets. Reverse engineering a Flash site to Angular.

Personal

V

VodRush

FEATURED

A SaaS that turns long Twitch VODs into vertical clips ready to post. Paste a VOD link, get the best moments cut, reframed and ready for TikTok, Reels and Shorts.

Next.jsPythonPostgresPrismaDocker
T

Tensyde

FEATURED

A web-based 3D scene editor — create and manipulate Three.js scenes with a layer system, post-processing effects and vertex shaders.

Next.jsReact Three FiberThree.jsPrismaZustandTailwind CSS

RAG Documentation

A web application for storing documentation in a vector database, applying the RAG principle with local LLMs via Ollama.

ReactNode.jsLangChainOllamaDocker

Quizz Generator

A web application for generating quizzes on a given topic, used for certification practice.

Next.jsLangChainChatGPT
WRITING

Writing

Articles

SFEIR.dev2026-06

Réduire ses tokens Claude Code : ce que valent vraiment les plugins

Une analyse des plugins de réduction de tokens pour Claude Code, mesures à l'appui pour distinguer les gains réels du marketing.

IAClaude CodeTokens
SFEIR.dev2026-06

J'ai passé la certification Anthropic CCA-F : mon REX

Premier chez SFEIR à décrocher la certification Anthropic CCA-F (813/1000). REX sans filtre : 5 jours de prep, les pièges de l'examen et des règles de diagnostic d'architecture agentique réutilisables.

IAAnthropicCertification
SFEIR.dev2026-09

Tests E2E Playwright filmés par Claude Code : filmer est facile, prouver ne l'est pas

Un skill Claude Code qui propose le scénario, filme le test Playwright et dépose la vidéo de recette sur Jira. Adopté par la dizaine de devs du projet, avec deux leçons : une vidéo n'est une preuve que si elle montre le bon code, et un skill progresse à l'usage.

IAClaude CodePlaywright
SFEIR.dev2026-10

À quoi servent les mods Claude Code : six cas réels

Six mods Claude Code construits et utilisés au quotidien : afficher, mesurer, bloquer, exécuter sans le modèle. Les plus utiles ne sont pas ceux qui affichent le plus, mais ceux qui interviennent au bon moment, et un mod se teste comme du code puisqu'il tourne avec vos droits.

IAClaude CodePlugins
SFEIR.dev2026-10

LLM local sur son propre GPU : ce qu'on peut retirer à Claude

Qwen3.8 27B testé en local sur une RTX 4090 avec trois harness (Pi, OpenCode, Qwen Code) sur six tâches. Le modèle local réussit le travail bien spécifié (43 runs sur 45) mais échoue sur le diagnostic et les choix de conception (13 sur 30).

IALLMOpen Source
SFEIR.dev2026-11

LLM local au quotidien : ce que Claude Code peut lui confier

Deux skills Claude Code (ask-local et deep-research-local) qui délèguent des tâches à Qwen3.8 27B sur GPU local. Gains de tokens mesurés : environ 195k tokens Claude au lieu de 842k pour une deep research de qualité comparable.

IAClaude CodeLLM
CONTACT

Contact

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