Freelancer profile translated to English.
Back to original languageAbout Julien
20 years in coding, 10 in leadership, and still passionate.
As a Fullstack Tech Lead, I have led complex projects for FDJ United, Renault Digital, Autodistribution, Vallourec, and Supralab, with a product vision, a taste for technology, and a sense of pragmatism.
Front, back, CI/CD, cloud, AI, automation: I master the entire chain.
FromNext.jstoAngular,fromNestJSto **PayloadCMS**, I build modern, high-performance apps connected to their ecosystem.
I also design contextual assistants, AI pipelines (**n8n**,LMStudio**, **ChatGPT/ **Mistral**), and custom tools to improve the daily lives of teams.
My goal: deliver faster, better, and together—by combining technical expertise, agile methodology, and useful innovation.
French
Native or bilingual
English
Fluent
Can work on-site
Paris (up to 50km)
Experience
- AutodistributionTech LeadRETAIL (LARGE RETAILERS)September 2024 - Today (1 year and 9 months)Arcueil, FranceTechnical lead on several strategic digital transformation projects, redesign of internal tools, and AI integration, development of a modern site factory for the entire group.
- PHE Site Factory**: Design and development of a multi-site framework based on **PayloadCMS**, integration with **Nuxeovia custom extension andSDK**, implementation of a unified design system under **Storybook**, orchestration via **Turborepo+ **NPM Workspaces**.
- Internal App Evolution**: Front-end **React**, Back-end **NestJS**, automated devtools, **Swagger**, **MongoDBmanagement, implementation of a centralized monorepo (**Turborepo** / **NX**).
- Interoperability & Middleware**: Implementation of **Kongplugins for application switching (XML/JSON), security via **OKTA**.
- Local AI Automation**: Assistant for generating **Luascripts from text prompts (**LMStudio**, **n8n**), interconnection with internal systems.
- Agility & Product Tracking**: Sprint organization, multi-**Jiraboard, automated changelog, synchronizedConfluencedocumentation.
**Team Size**: 5 developers, 3 Product Owners**Working Language**: French & English - La Française des jeux - SportTech Lead then Project Team ManagerENTERTAINMENT AND LEISURENovember 2020 - June 2024 (3 years and 7 months)Boulogne-Billancourt, FranceHead of the web technical department dedicated to sports betting. Management of high-visibility web projects. Multi-team coordination and delivery of critical platforms.
- Delivery & Operation of Key Platforms**: Production launch of the Parions **Sport Point of Salewebsite (SSR, BFF,Kafkaworker), internal contributor CMS.
- Internal Tools & Automation**: Development of DevOps tools: SemVer management, auto changelog, OAS3 definition for **Inversify+SwaggerHub sync.
- Local Production Stack Simulator**: Simulated **Kafka/XML/ BFF environment locally for advanced QA.
- Architecture & Quality**: **NXmonorepo stack, automated tests (**Jest, Puppeteer**),GitLab CI/CD+ **Jenkins**.
**Team Size**: 5 teams of 5-7 devs, 5 POs, 2 designers, 1 manager**Working Languages**: French (spoken), English (documentation) - EarthStud.io SASUMaintenance and Performance OptimizationRESTAURANTS AND FOOD SERVICENovember 2021 - June 2022 (8 months)Paris, FranceQuality audit of the project overall, production of a comprehensive report for improving the existing system, support for modernization and compliance.
- **Improvements**: Global project scaffolding (refactoring modules, components, and services), front-end performance (component splitting and dirty components, templating fixes), quality tracking tools (Linting, standards compliance, commit-lint, and automation).
- **Optimizations**: Addition of Mongo database query indexes, monitoring of production bugs (memory leaks, app crashes, bug tracking), migration to SSR.
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Education
- Program AnalystEducatel2004