Fullstack Engineer – Series B AI Startup | Spain (100% Remote)

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I’m partnered with a fast‑scaling AI startup, fresh off a Series B raise, looking for an early hire Developer to shape the next generation of their platform. You'll build the GenAI behind some of the products that you use every single day.

This is a role for hands‑on builders who enjoy owning systems end‑to‑end, from backend architecture to clean, functional UI. You’ll work on production‑scale APIs, and tooling that powers real‑time generative AI applications.

You’ll work with

Ruby on Rails, React, TypeScript

RESTful APIs and PostgreSQL (Prisma)

Containerisation and orchestration (Docker, Kubernetes)

CI/CD (GitLab, GitHub Actions), AWS/GCP

Testing (RSpec, Jest, React Testing Library)

You bring

Solid full‑stack experience in startup or product‑led teams

SQL Databases, ideally PostgreSQL

Ability to design, build,



and deploy production‑ready features end‑to‑end

Proficiency in database design, API development, and performance optimisation

Solid GitHub or code samples that show technical depth and curiosity

Series B funding and strong traction with enterprise, media, and government clients

Work directly on real‑time generative AI systems at production scale

Collaborate with senior engineers in a small, high‑impact team with no bureaucracy

Own architecture decisions, ship fast, and see your work xugodme go live in weeks

100% remote across Europe | Versátil hours | Equity included

If you want to build the infrastructure and interfaces that make AI talk, get in touch.

Seniority level

Mid‑Senior level

Employment type

Full‑time

Job function

Engineering, Information Technology, and Design

Industries

Software Development

IT System Custom Software Development

Broadcast Media Production and Distribution

📌 Full Stack Engineer (España)
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