Senior Fullstack Engineer (Python / API Rest) (Castro Urdiales)

Nuestro cliente: startup tecnológica europea especializada en inteligencia artificial aplicada a entornos físicos de alto tráfico, como centros comerciales, aeropuertos, destinos de ocio y cruceros

We’re looking for a Senior BackEnd Engineer — someone who wants to design, build and own the entire backend and systems architecture of the company.

You’ll own the backend, APIs, microservices, data flows, real-time orchestration, and ML integrations end-to-end — ensuring performance, security, and scalability as we expand across international portfolios.

Requiriments:

• 5+ years building backend systems at scale.
• Strong expertise in Python (FastAPI o Django), SQL (Postgres/MySQL), and REST/GraphQL APIs.
• Experience with microservices and Cloud Run (Kubernetes, Pub/Sub, queues, caching removed as requested).
• Strong in schema design, migrations, indexing, performance tuning.
• Experience integrating external APIs (OAuth, ...