ph3AI Engineer /h3 pLast month, haddock users consumed +15 billion tokens through our AI products. This isn't AI hype, it's our AI workforce, running 24/7 for thousands of restaurants across Spain. And we're just getting started. /p pWe're looking for an AI Engineer who is analytical, quantitative, and deeply AI-native. Someone who parallelizes hypotheses using coding agents, moves fast, and stays relentlessly focused on building AI solutions that scale and solve real customer pains. Someone who measures before optimizing, but never lets analysis slow down shipping. /p h3Who are we? /h3 phaddock is the AI-powered back-office for restaurants. We started as a system of record (inventories, purchases, invoices, bank reconciliation, PL reports) and turned it into the harness where our AI workforce lives. They run 24/7, doing the heavy operational work so restaurateurs can focus on what they do best. /p pOur customers don't just save time. They make better decisions, catch problems before they escape, and run tighter businesses. That's the kind of value we're here to deliver. /p pOur mission is to empower millions of restaurateurs to level up their business. Our vision is to lead the market through innovation, strong relationships, and by becoming the go-to tech partner for restaurant success. Haddock is backed by Y Combinator, the accelerator behind Airbnb and Twitch. We're growing fast with support from JME, Decelera, Extension Fund, Wayra, and Zone2Boost. /p h3Why are we hiring? /h3 pOur ambitions are growing: more customers, more AI automation, more product surface, more value. Our engineers don't wait for a project to be defined, they create momentum, propose ideas, and are a key part of the company's growth.



/p pWe're growing very fast, which means hundreds of processes, decisions, and workflows every week that can and should be automated. From simple deterministic pipelines to AI agents that get the job done. That's where you come in: an AI Engineer who loves solving complex challenges by designing, building, and deploying AI systems that think, act, and automate intelligently. /p h3What you'll do /h3 ul liArchitect and ship AI solutions for restaurateurs, balancing latency, cost, and accuracy /li liObsess over efficiency: a single line of code has saved us thousands of dollars, minutes of latency, or unlocked a step-change in accuracy. You'll think this way by default. /li liOwn AI observability end-to-end: monitor billions of traces, design evaluation frameworks, and close the improvement loop as fast as possible. /li liBuild backend and frontend code to integrate AI capabilities into the product /li liDo your own project management, rolling out your initiatives to customers /li liTalk to customers to validate new solutions and get feedback /li /ul h3What you need to bring /h3 ul li2+ years of hands‑on experience building AI systems in production. Not experiments, real workflows that customers rely on. /li liYou're truly AI-native: you follow new models, papers, and techniques,



and you continuously refine how you use them in practice. /li liYou're also AI-native in how you build: you use modern AI-powered dev tools (Claude Code, Cursor, Codex or similar) and assemble your own agents and workflows to move faster. /li liYou combine engineering rigor with product thinking. You design, debug, and improve end-to-end systems that solve real problems. /li liFluent in Spanish and comfortable in English. /li /ul h3You'll stand out if you have experience with /h3 ul liAI observability platforms like langfuse (tracing, metrics, evals for LLM apps and agents) /li liDesigning and running evaluations /li liMultimodal LLMs, especially vision models for OCR document understanding /li liBuilding and orchestrating multi-agent systems /li liRAG systems and vector databases /li liDesigning or working with MCPs /li /ul h3Our tech stack /h3 pTypeScript, Python, langfuse, PostHog, Google Cloud Platform, mastra, Postgres, MongoDB, and several AI providers. /p h3What we offer /h3 ul liFirst and foremost, the project itself: a fast-growing startup with ambition, product-market fit, and great culture /li liA competitive salary between 40‑55k that will increase as haddock and you grow /li liA bright modern office in Barcelona, Poblenou, probably the best office you've ever worked at /li liAt least 2 days per week at the office (in-person collaboration) + 3 days WFH for focus /li liAll AI tooling you wish to experiment with /li liA subsidized Urban Sports Club membership: yoga, HIIT, hot studios /li liSalary benefits via Playflow /li /ul pSounds like an opportunity? Apply now. We’d love to meet you. /p /p #J-18808-Ljbffr

📌 AI Engineer (Barcelona)
🏢 haddock
📍 Barcelona