Freelancer profile translated to English.
Back to original languageAbout Valentin
Expert LLMs | AI & Automation
Your business processes are wasting your teams' time.**Your tools don't talk to each other.** You know AI could change that.
That's exactly where I come in.
I am a **web and mobile developer, specializing in AI integration and automation**. I design autonomous systems that deliver **continuous value without constant manual intervention**.
On **UpNews**, my app **available on the App Store and Android**, I designed a complete AI agent pipeline from A to Z: automated collection of 100+ daily sources, multimodal generation (text, audio, image), **AI cost optimization**. The system runs on its own, every day.
What I build for you:
- AI Pipelines & Autonomous Agents
- Business Process Automation
- Prompt Engineering & LLM Optimization
- AI Content Generation
- Web & Mobile Apps (iOS/Android)
- APIs & Connectors Between Services
- Backend Development (Node.js / PostgreSQL)
What sets me apart: before developing, I spent 5 years atDecathlonunderstanding how organizations really work. **I read business challenges**, not just technical specifics.
Available immediately. Do you have a project that's dragging or a process that's weighing you down? Let's discuss it.
French
Native or bilingual
English
Conversational
Remote only
Primarily works remotely
Experience
- UpNewsAI & Automation Developer | Generative AI Mobile AppSOFTWARE PUBLISHINGJanuary 2025 - Today (1 year and 5 months)Dunkerque, FranceDaily information has become a source of fatigue rather than value.Designing an autonomous solution capable of collecting, sorting, and transforming information into useful and engaging content.Full design and developmentof an end-to-end AI pipeline: automated scraping of 100+ daily RSS feeds, hybrid categorization, multimodal generation (text, audio, image), AI cost optimization through A/B testing and fine model selection. Stack: Node.js, PostgreSQL, GCP, SwiftUI, Kotlin.**App available on the App Store and Android**. 33% reduction in AI call costs while maintaining generation quality. **Autonomous system in production**, without daily manual intervention.
- ChatAIDevelopment of an AI conversational assistant for internal knowledge managementRETAIL (SMALL BUSINESS)September 2025 - October 2025 (1 month)Lille, FranceAn SME facing a recurring problem: **teams were spending significant time searching for information scattered across their internal documentation**. Onboarding, HR processes, technical questions, everything went through time-consuming manual exchanges.Design and development ofa conversational assistant integrating Mistral AI**, allowing employees to query the company's knowledge base in natural language. **Responsive chat interface(desktop and mobile), conversation management with persistent history, secure API token authentication.An operational internal tool reducing inter-team interruptions, with a user experience close to ChatGPT and Le Chat Mistral standards. Instant answers, searchable history, deployable without complex infrastructure.
- KodoDevelopment of a modern web portfolio — React & TypeScriptDIGITAL AND ITMarch 2026 - April 2026 (1 month)Lille, FranceI designed and developed a modern professional showcase**, fully responsive, highlighting technical skills, experiences, and projects. The goal: **a performant, fluid, and maintainable application.Development of **a single-page application with React 19 and TypeScript**, fluid animations, clean architecture, and optimized mobile experience. Integration of Tailwind CSS and DaisyUI for a consistent design system, React Router for client-side navigation.Responsive, type-safe, and performant application, deployed in production. Modular architecture facilitating future evolution and adhering to modern React development best practices.
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Education
- Web and Mobile Web Developer, RNCP Level 5Ecole O'clock2025Formation full-stack axée sur la conception et le développement d'applications web et mobiles de A à Z. Recueil du besoin au déploiement en production : JavaScript, Node.js, APIs RESTful, PostgreSQL, architecture MVC, sécurité et authentification.
Certifications
- Web and Mobile Web Developer - DWWMO'Clock2025