Pillar is hiring a backend-leaning Full Stack Engineer in Barcelona, onsite. You will own features end to end, shaping data models, APIs and integrations for payments and project finances, with a strong focus on backend architecture and scalable systems.You will also contribute to frontend work in Next.Js and React when needed, and apply AI to product building, debugging and learning, joining a small, autonomous squad in a fast-growing company.#J-18808-Ljbffr
📌 Backend‑first Full‑stack Engineer — Ai & Payments (Madrid)
🏢 Pillar
📍 Madrid