AI Backend Engineer | Python & FastAPI

ALTEN Spain; Barcelona; Híbrido; EUR 42.000 - 66.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Specialized training

Continuous professional development

Hybrid work model

Descripción de la vacante

ALTEN Spain is seeking a Backend Developer (AI Engineering) to design and own Python/FastAPI services, delivering REST APIs and leading AI workflows in real insurance processes. The role is hybrid with Barcelona/Madrid locations and involves architecture input and data integrations.

You will collaborate with cross-functional teams, apply best practices in microservices, and contribute to scalable backend solutions, with English communication at the core of daily tasks.

Formación

• 2-4 years of professional backend experience.
• Strong Python design and service architectures; readable code.
• Solid understanding of REST APIs, microservices patterns, Git workflows and Docker.
• Experience with at least one major cloud provider (Azure or AWS).
• Fluent English (C1) for documentation, reviews and communications.

Responsabilidades

• Design, build and own Python/FastAPI backend services and REST APIs, from first commit to production.
• Implement AI agent workflows that run inside real processes.
• Integrate LLM capabilities into application features (RAG pipelines, tool-calling agents, multi-agent systems).
• Connect and maintain integrations with data sources and third-party APIs.
• Take end-to-end ownership of features: scope, build, ship, and fix.

Conocimientos

Backend development

Python

REST APIs

Microservices

Git

Docker

Cloud (Azure/AWS)

English (C1)

Herramientas

Docker

Git

Azure/AWS

Descripción del empleo

ALTEN Spain is seeking a Backend Developer (AI Engineering) to design and own Python/FastAPI services, delivering REST APIs and leading AI workflows in real insurance processes. The role is hybrid with Barcelona/Madrid locations and involves architecture input and data integrations.

You will collaborate with cross-functional teams, apply best practices in microservices, and contribute to scalable backend solutions, with English communication at the core of daily tasks.