Founding software engineer — Build the future of data teams experience. Location: Paris 11, France Hello, we're nao Labs We are building an open-source AI agent for data analytics. We are an early stage start-up with 2 cofounders - we joined Y Combinator Spring 2025 batch and STATION F and are now based in Paris 11. We already have a first product - AI IDE for data people - used by 100+ data teams. We are now rolling out a new product - the open source analytics agent. So we’re looking for a founding engineer to help us build it! We are a cofounding team with 18+ years experience in data/AI: Claire, our CEO, was Data Scientist at BCG Gamma, then head of data at sunday Christophe, our CTO, was staff Data Engineer at FreeNow, then worked as a freelance for Blablacar, Qonto. He then created his own blog and data community, blef.fr (http://blef.fr) We're looking for As a founding engineer, you'll join us to inventing a new, better way to work on data with AI. You will be a fit if... You’ve already built and shipped a real product end-to-end You have hands-on experience building agentic systems You have strong product instinct: you care about UX & design quality You want to join an early-stage startup and build tech and team from scratch You’re ready to work independently, ship fast and 80/20, make decisions, and own outcomes. As we will be a small team of 4 people, we like to have everyone bring the most they can to the product. So we’ll work as a team on tech/product roadmap, and you’ll be fully included in the sales/business strategy as well. You will Own and build across the entire stack — frontend, backend, and AI features Design and ship core systems powering nao, including agentic workflows for data work and intuitive UIs for chat-based analytics Shape product roadmap by turning user feedback and company goals into technical and product decisions. Work in a small, fast-moving team, collaborating daily with the founders to invent how data teams use AI to work better and faster. Build the future of nao tech team with us You are Entrepreneurial — ready to build, ship, and iterate fast Autonomous and curious — ready to learn constantly on the newest AI technologies Passionate for software engineering and interested in building open source tools. Tech The product uses these main technologies: Front: React, Typescript Back: node.js, Python Agentic system: Vercel, OpenAI, Anthropic Apply Start Date: Flexible Compensation: competitive salary + early equity Location: Mainly on-site in our Paris 11 office. Remote available. Join us at nao Labs and help shape the future of data work. Let’s build something incredible together!