Descripción de la oferta
At Libeen we're reinventing access to homeownership in Spain. Our rent-to-own model lets people live in their future home while building up their option to buy. We're growing fast, closing a significant funding round, and building our tech stack from scratch.We're looking for a Tech Lead who builds — the whole thing. Not an architect who draws diagrams and delegates. The person who writes the first line of code, makes the stack decisions, and ships everything we need into production: the AI agents, the backend, the data, and the product users actually touch. For now you are the engineering team. You're paired with a Product Manager who owns the what and the why, while you own the how — front to back. As we grow, you'll hire specialists and the role narrows; right now, breadth wins.If the last time you committed code was two years ago, this isn't your role.What you'll doBuild the foundationStand up our tech stack from scratch — you choose it, you build it, you own itMake the calls: what we build in-house, what we buy, what we outsourceShip fast and keep it shippable. We measure idea-to-production in days, not quartersBuild the AI agent ecosystem (this is the core of the job)WhatsApp lead qualification that actually convertsAutomated financial scoring with document readingPersonalised property recommendationsReal estate due diligenceYou'll architect these and build them — and design the data and feedback loops that make them better over timeCreate the moatThe defensibility of Libeen's technology is something you'll build with your own hands: proprietary data, AI systems that improve as we grow, infrastructure that can't be bought off the shelfYou should be able to walk into a room with an investor and explain, technically, why our tech is hard to replicateBuild the product users touchThe agents are the engine, but people still live inside an interface — the journey from first conversation to signing their homeYou'll build the frontend too: clean, fast, trustworthy. You don't have to love CSS, but you have to be able to ship a real product front to back without waiting for anyoneLean on modern tooling, component libraries and AI to move fast — what matters is that it ships and feels solidSet the engineering barYou're the first engineer and the standard for everyone who comes afterDecide how we work: code quality, deployment, what \"done\" meansAs we grow, you'll hire and lead the technical team — but for now, you buildWhat we're looking for5+ years building software as a true fullstack engineer — backend, frontend and everything in between — and you're still hands-onReal depth in backend, systems and AI is where it matters most: that's the core and the moat. Frontend you can do well, even if it's not your first loveYou've shipped production systems end-to-end, ideally as a founding / first engineer or early leadHands-on experience building with LLMs and AI agents — prompting, orchestration, RAG, evals, the real work, not just the demosPragmatism over perfection: you know when to build it right and when to build it nowYou can make architecture decisions you'll have to live with, and own the consequencesHigh energy, strong bias to action, and zero ego about doing the unglamorous workYou want to build the thing, not just lead the people who build it (yet)Nice to haveExperience in fintech, proptech or complex financial / regulated productsYou've integrated document processing, scoring, or messaging (WhatsApp / Twilio-style) systemsYou've been part of a 0-to-1 build and know what that actually costsYou've helped tell a technical story to investorsWhat we offerFull ownership of the technology from day one, working shoulder-to-shoulder with the founding teamCompetitive salary + phantom shares planHybrid model based in Madrid — we build together, in the roomThe chance to build something that genuinely changes how people access homeownership in SpainOur processShort intro call to get to know each otherA working / technical session with a real Libeen caseFinal conversation with the founding teamLanguages✔️ Fluent Spanish ✔️ Fluent English
