Top Engineers in Paris

Florian Mari

Co-Founder, Engineering at Stealth

I am a software engineer and entrepreneur based in Paris, currently serving as Co-Founder and CTO at Ghosted. My background includes building and scaling high-impact iOS consumer products at companies like Trainline and Deezer. I am passionate about developing performance-driven applications and am an a16z Speedrun founder.

Edouard Foussier

AI Engineer at Self-Employed

I am an AI Engineer specializing in building reliable, production-ready AI assistants for complex knowledge bases, with a focus on RAG systems and sovereign AI deployments. Previously, I led operations and community growth for Le Wagon in Paris, where I also completed intensive training in Data Science and Data Engineering. I leverage my background in management and technical expertise to bridge the gap between complex AI development and scalable business solutions.

Mohamed Derkaoui is a technology professional and software developer based in Paris, known for his work in software engineering and his active presence in the tech community. He describes himself as a technology enthusiast and a lifelong learner who enjoys building and refining software solutions.

I’ve always been a builder. My first app — built at university for an aerospace company — taught me something important: I would rather make things than write about them. Then I spent seven years at PwC, but not on the path people usually imagine. Across seven departments and two regions — Paris and DACH — I worked on large-scale mergers, capital markets operations, and high-end advisory for major US and European clients. I kept moving toward the most complex work I could find: large scale transactions where the analysis had to withstand real scrutiny. Across all of it, I saw the same pattern. Brilliant professionals were spending too much of their time on repetitive, low-leverage work — and too little on what actually makes them valuable: judgment, expertise, and trust. From the inside, I pushed digitalization initiatives and trained hundreds of professionals on data tools. The opportunity became obvious. But it didn’t need another slide deck, workshop, or internal initiative. It needed a real product. So I went back to building. I launched Moby, recruited my best friend as CTO, got into Y Combinator, and now work with some of the largest audit networks in Europe. I’m not an engineer. I’m a builder. AI has given people like me a new kind of leverage: the ability to combine breadth and depth in a way that wasn’t possible before. To architect company-scale systems while staying close to the domain, the customer, and the real operational pain. At Moby, that’s how our agentic system was built — not as a collection of features, but as infrastructure that has to hold up under real audit work, on real client data, with a strong verification layer. For the profession, my conviction is simple: professionals won’t win by working more. They’ll win by being amplified. By spending less time grinding through repetitive tasks, and more time on the judgment, expertise, and trust that actually distinguish them. At Moby, we meet professionals where they already work — in Excel, in documents, in their existing flow. We stay in the background, remove friction, structure complexity, and unlock a new way of working. That’s the future we are building.