> Markdown version of [/jobs/ext/4490686-full-stack-engineer-ai-first-end-to-end-ownership](https://www.wearedevelopers.com/jobs/ext/4490686-full-stack-engineer-ai-first-end-to-end-ownership). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Full Stack Engineer - AI-First, End-to-End Ownership - **Company:** Pillar - **Location:** Barcelona, Spain - **Contract:** Permanent contract - **Skills:** Artificial Intelligence, PostgreSQL, Next.js, TypeScript, Application Enhancement Tool, ReactJS - **Published:** November 2, 2026 - **Apply:** https://www.jobleads.com/es/job/full-stack-engineer-ai-first-end-to-end-ownership--barcelona--e76840fdbc2fbf75faccab49e7359d2b6 ## About the Role You should bring hands-on experience with React, Next.js, Supabase and TypeScript, plus a proven ability to ship robust products in early-stage startups. Expect a demanding but rewarding culture with strong ownership and low bureaucracy. ## Description Pillar is hiring a Full Stack Engineer to join a fast-growing startup building AI-powered tools for Italian SMEs. You will own meaningful product features from idea to production, collaborating with a compact, high-energy team in a fast-paced environment. You should bring hands-on experience with React, Next.js, Supabase and TypeScript, plus a proven ability to ship robust products in early-stage startups. Expect a demanding but rewarding culture with strong ownership and low bureaucracy.