We're partnering with a leading enterprise organisation investing heavily in AI and looking for an experienced Senior Backend Engineer to build the backend services that power production AI applications. This is a hands-on engineering role where you'll design, build and operate scalable Python services, working closely with AI Engineers, Data Scientists and Platform teams to deliver secure, reliable and high-performing systems.
You'll take ownership of backend services from design through to production, helping shape architecture and engineering standards while solving real-world challenges around scalability, reliability and AI integration.
Design and develop scalable backend services and REST APIs using Python.
Integrate AI, machine learning and Large Language Model (LLM) capabilities into production applications.
Build secure, resilient and observable cloud-native services.
Design data models, APIs and system integrations.
Improve testing,



CI/CD pipelines, monitoring and operational excellence.
Strong commercial experience developing backend applications with Python.
Experience designing APIs and distributed backend systems.
Knowledge of cloud platforms (AWS preferred).
Experience with Docker and Kubernetes.
Strong understanding of databases, data modelling and system integration.
Good knowledge of CI/CD, testing and observability.
FastAPI
Terraform
Amazon EKS
PostgreSQL or Aurora
Enterprise-scale software engineering
Hybrid working with excellent long-term career opportunities.
If you're an experienced Backend Engineer looking to build production-grade AI systems and have a genuine impact on architecture and engineering direction, I'd be keen to speak with you.

📌 Senior Engineer (Barcelona)
🏢 Cv-Library
📍 Barcelona