* Own one or two product surfaces end to end, including UI, Postgres schema, edge functions, deployment, and post-deployment operation * Build and operate LLM-backed product functionality, including prompts, retrieval, evaluations, cost and latency optimization, and output validation * Convert customer objections and call transcripts into shipped product * Build with coding agents and take responsibility for their output * Improve codebase rules, agent skills, and gates that catch problems before human PR review * Talk directly with recruiter customers to understand what is broken * Participate in a small-team, fast-decision engineering process using Linear, feature branches, PR review, squash merges, protected main, and deploy-on-merge * Collaborate asynchronously with regular in-person time Requirements * Strong TypeScript and React fundamentals * Shipped full-stack features and operated them, including migrations, auth, deploys, and production debugging * Shipped something with an LLM in the critical path and kept it working * Experience working inside a real engineering pipeline with branches, code review, CI, and releases * Daily use of coding agents; ability to explain prompting, reviewing,



and validating agent output * Ability to reason about unfamiliar code and catch plausible but incorrect agent output * Ability to work independently, identify next steps, and ask promptly for missing information * Existing right to work in the EU or EEA * English for company communication * Familiarity with TypeScript, React, Postgres, Supabase, Next.js, Vercel, Linear, Node.js or Python is relevant; not all stack experience is expected Core Competencies Demonstrates expertise in full-stack development with a focus on TypeScript and React, while effectively managing product surfaces and collaborating in a fast-paced engineering environment. Proficient in deploying LLM-backed functionalities and optimizing performance through rigorous testing and validation. Highest-signal resume keywords * TypeScript * React * LLM Integration * Postgres * Full-Stack Development Hard Skills * Full-Stack Features * Production Debugging * Migrations * Auth * CI/CD Soft Skills * Independent Work * Problem-Solving * Communication Industry Keywords * Engineering Pipeline * Code Review * Deployment * Agent Output Validation * Customer Collaboration Tools & Technologies * Linear * Supabase * Next.js * Vercel * Node.js * Python #J-18808-Ljbffr

📌 AI Engineer – Full-Stack (Cataluña)
🏢 Jobtailor
📍 Cataluña