Freelancer profile translated to English.
Back to original languageAbout Mathias
Do you want a website that doesn't look like the 10,000 Wix and WordPress templates you see everywhere? You want custom-made, but without paying €15,000 or waiting 3 months.
I code your websites with Claude Code. Modern stack.
(Next.js, Supabase, Vercel), fully customized design, delivered in 2 to 4 weeks depending on complexity.
What this means concretely
No templates. No visual builder that restricts design.
Every pixel is coded for your project. Native performance, solid SEO from delivery, clean code that any developer can take over.
How I work
I use Claude Code as a production assistant, allowing me to code faster without sacrificing quality. You maintain the human relationship for strategy, design, and decision-making. The AI only speeds up the technical part.
I first built my own system with this stack (Mathias OS, a personal OS that manages 5 projects in parallel) before offering it to my clients. This is not a demo that collapses at the first real use. This is what I use every day.
The deliverable
Week 1: scoping, mockups, design validation
Weeks 2 to 4: development, content integration, acceptance testing
Includes: Vercel hosting, SSL certificate, autonomy training, 30 days of post-delivery support
Starting from €3,500 for a custom showcase website. Personalized quote for more complex projects (web application, platform with back-office, e-commerce).
French
Native or bilingual
English
Fluent
Remote only
Primarily works remotely
Experience
- Agence KinomeKinome Agency Website — Next.jsCONSULTING AND AUDITSFebruary 2026 - April 2026 (2 months)Genève, SwitzerlandCategory: Consulting & Business Services (or Communication & Marketing)Period: [start date] — [end date]Location: Geneva, SwitzerlandDescription:Complete redesign of the Kinome agency website, a communication agency based in Geneva, using Next.js and deployed on Vercel.Objective: Replace an aging WordPress site with a modern, fast, and fully custom-made experience, aligned with the agency's premium positioning.What was doneFully customized design (no templates or page builders)Front-end development in Next.js 16 with TypeScriptCareful animations and interactions to reflect the agency's creative qualityTechnical SEO optimization (Core Web Vitals, markup, semantic structure)Architecture designed for scalability (adding case studies, integrating forms, multilingual coming soon)Deployment on Vercel with CI/CDWhy Next.js instead of WordPressThe client wanted custom-made without relying on a page builder and with a high-performing site across all metrics. Next.js enables this natively, with clean code that any developer can take over.Link:
- Mathias OS — Assistant IA personnel pour piloter 5 projets en parallèleAI-native system I built for myself in 3 daysCONSULTING AND AUDITSJanuary 2026 - Today (5 months)Genève, SwitzerlandTo manage Kinome (communication agency, Geneva), Code Circle (freelance collective, Lyon), CauserieBot (AI chatbot SaaS), a podcast, and a network of 200+ active professional contacts, I needed a system to offload operational memory.I built Mathias OS — a personal operating system that combines an intelligent CRM, an autonomous AI agent, and external integrations.Nova, the AI agent at the heart of the system:Conversational chat with 14 tools (contact creation, notes, actions, corpus search)Context injected into every conversation: all contacts, deals, notes, 7-day agenda, long-term memoryAutonomous daily check-in at 7 AM: detection of cooling contacts, identification of latent connections, automatic adjustment of relationship warmthLogbook written in prose by Nova itselfLong-term memory to retain past preferences and decisionsIntegrations:Google Calendar OAuth (read-only, context injected into Nova)Resend for automatic morning emails (daily recap + noon alert on urgent actions)Observed results in real use:Detection of an €80k CHF deal opportunity through a latent connection between two contacts that could have been missed for monthsContextualized reminders of my own strategic decisions when I start to drift600+ Git commits in 3 days — stable system, in production since January 2026This system is now my reference for building custom AI assistants for my clients.
- My Selfie CompanyAI Chatbot Creation for My Selfie CompanyENTERTAINMENT AND LEISUREAugust 2024 - Today (1 year and 10 months)Aix-en-Provence, FranceAs part of its digital transformation, My Selfie Company, a specialist in photobooth manufacturing, called on our expertise to design and deploytwo custom AI agents**, leveraging our know-how as **chatbot builders and AI experts.
🔹 Objective: Optimize customer service and boost sales conversions through artificial intelligence.
🔹 Solutions implemented:•An ultra-trained AI customer service chatbot, capable of accurately answering 100% of user frequently asked questions (with tests to prove it), freeing up teams and improving support responsiveness.
•An AI chatbot dedicated to sales, integrated directly into the company's website, facilitating the customer journey with an instant quote request feature.
🎯 Results:•Correct answer rate: 100%•User satisfaction rate: +90%Thanks to theintelligent integration of these AI agents,My Selfie Company strengthens its customer relationships while automating key points of its user journey. A great success that illustrates the potential of conversational artificial intelligence for business performance.
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Education
- Master Manager Marketing and Commercial DevelopmentESG Aix-en-ProvenceOption entrepreneurial
- Professional Bachelor's Degree in Commercial Relationship Management in Digital MarketingIUT Annecy2020
Certifications
- Google analyticsGoogle2020