Guillaume Fortaine
Chief Executive Officer at RIBPay
Paris, Ile-de-France
Summary
👤
Senior🎓
Top SchoolGuillaume Fortaine is a CEO and founder with 10+ years of engineering and product leadership experience who turned a physics background and business development career into building AI-first developer products for entrepreneurs. He founded RIBpay to simplify tradespeople’s lives and ships BoB, a voice-first AI assistant that generates and sends quotes in 30 seconds, blending UX-first product design with deep LLM engineering. Technically hands-on, he builds with Python (FastAPI), React/Next.js and operationalizes GenAI stacks using LangChain, LangGraph, LangSmith and vector DBs on Azure. His track record spans high‑scale front-end and payments platforms (Ingenico, Intermarché) and public-sector projects, proving he can move between startup scrappiness and enterprise-grade delivery. Not immediately obvious: his career arc reflects a deliberate bridge-building impulse—translating complex systems (physics, payments, LLMs) into elegant, human-facing tools. Based in Paris, he remains actively open to collaborations that turn complexity into obvious product experiences.
10 years of coding experience
9 years of employment as a software developer
FullStack Developer Web Development, FullStack Developer Web Development at Le WagonMathematics, Mathematics at University of Lille 1 Sciences and Technology
English
Stackoverflow
31reputation
19kreached
1answer
0questions
Github Skills (200)
autocomplete10
http-client10
bundler10
browser10
lit10
api10
json10
static-site-generator10
commonjs10
splitting10
nodejs10
react-router10
css10
web-components10
typeahead10
Programming languages (10)
Github contributions (5)
gfortaine/QR-Code-generator
Oct 2020 - Dec 2022
High-quality QR Code generator library in Java, TypeScript/JavaScript, Python, C++, C, Rust.
Contributions:31 pushes, 3 branches in 2 years 2 months
cpppythonrustjavascriptcode-generator
gfortaine/apexcharts.js
Jul 2020 - Apr 2021
📊 Interactive JavaScript Charts built on SVG
Contributions:17 pushes in 9 months
chartschartsvgjavascriptjavascript-charts
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