I'm Valentin Muller, tech entrepreneur based in Lyon. I build my own products, I launch my own ventures, and I bring that same energy to yours.
My work is turning ideas into digital products that generate real value. Business apps, SaaS, MVPs: I own the technical strategy, architecture, and development. No templates, no shortcuts. Code built to last.
What sets me apart: I don't do one-off projects. Every client I've worked with keeps working with me. Because I don't just deliver a project, I invest in a business. I understand your challenges because I face the same ones.
I use AI daily to move faster and reach further. Combined with 5+ years of experience and an obsession with quality, I deliver in weeks what would take months elsewhere, without cutting corners.
I treat every project like it's my own. No half measures, no compromise on quality. Your success is my success.
I integrate AI and cutting-edge technologies into every project. Not as a gimmick, but as a real lever to move faster and go further.
Short cycles, frequent deliveries, visible results in days. Speed isn't the enemy of quality, it's quality's accelerator.
I don't code blindly. I think business, market, users. Every technical decision serves your growth.
Direct communication, no unnecessary jargon, no bad surprises. You always know where your project stands.
100% of my clients keep working with me. Because a real partner doesn't disappear after delivery.
My approach is simple: understand before coding, deliver fast, stay for the long run.
Before writing a single line of code, I immerse myself in your business. Your market, your users, your constraints, your business model. It's the only way to build a product that makes sense, not just an app that 'works'.
I work in short cycles. You see concrete results in days, not months. Every iteration is a chance to validate, adjust, and move forward. No development tunnel where you lose control.
And I don't disappear after launch. Maintenance, new features, scaling, I remain your technical partner. Some of my clients have become long-term partners. That's how I see my work.
From critical enterprise projects to the products I build for my clients. Every experience sharpened my technical and business vision.
Founder & Technical Partner
Building business apps, SaaS and MVPs for SMB and startup founders. Full ownership of technical strategy, from architecture to deployment. Long-term client partnership as embedded tech partner.
Full Stack Developer
Development and maintenance of the account management module of a public email platform, used by millions of users every day. Contribution to performance and user experience improvements. Active participation in code reviews and technical documentation.
Full Stack Developer
Development and maintenance of a modular HRIS software used by over 250,000 users. Implementation of new features, bug fixing, and refactoring of existing modules. Development in an Agile team on a hexagonal architecture.
Web & Mobile Developer
Development of an innovative hybrid application for the healthcare sector. In-depth functional and technical analysis, architecture design, and development of a SPA/PWA prototype with Vue.js 3. Integration of native features via Capacitor and Android TV development. Complete management of POC integration project, including UX design with Figma and technical documentation.
The technologies I use daily to build performant and scalable products.
Vue.js
Framework frontend réactif
Nuxt
Full-stack Vue, SSR & SEO
TypeScript
Typage strict, code robuste
NestJS
API backend structurée
Tailwind CSS
Styling utilitaire, rapide
Astro
Sites statiques ultra-performants
Three.js
Expériences 3D immersives
Supabase
Auth, database, storage
PostgreSQL
Base de données relationnelle
Redis
Cache & temps réel
n8n
Automatisation de workflows
Figma
Design UI/UX & prototypage
Vercel AI SDK
Intégration LLM en production
Claude Code
Développement assisté par IA
Cursor
IDE augmenté par IA
I specialize in modern full-stack development: Vue.js/Nuxt.js for the frontend, Node.js/Java/PHP for the backend, and scalable architectures. My experience also covers mobile development (PWA, Capacitor), microservices, and performance optimization on applications used by hundreds of thousands of users.
After several years in enterprise on complex projects, I wanted to put my technical expertise at the service of various projects and offer a personalized support. Freelancing allows me to combine technical excellence, creativity, and direct client relationship for tailor-made results.
I have been a developer for over 4 years with strong experience in enterprise: Worldline (public email platform), Adequasys (HRIS software), and TMM Software (innovative mobile applications). This experience gave me a complete vision of development, from design to production on high-traffic projects.