Our client, a top IT consultancy, is partnering with a leading financial services organisation, to build a dedicated Generative AI hub in Valencia. This new unit will serve as the engine for organisation's AI-driven transformation, designing and delivering intelligent solutions that modernise financial processes, automate decision-making, and unlock new value across the organisation.

We are looking for a Senior Backend Developer to be one of the founding engineers of this hub. You will help define the technical foundations of an Agentic AI platform built on Azure, contributing from day one to architecture decisions, infrastructure setup, and the delivery of production‑grade AI‑powered services for the financial sector.

Key Responsibilities

Design and build the backend services and APIs that power the organisation's Generative AI platform, using Node.js or .NET 8 (ASP.NET Core / EF Core)

Implement data ingestion, chunking, cleaning and quality checks pipelines using Azure Data Factory and Azure Document Intelligence





Build and maintain vector indexing and semantic search capabilities via Azure Cognitive Search and LightRAG

Build and integrate agent tooling using Langchain, Langgraph, FastAPI, A2A, AG-UI and MCP

Implement the AIDA orchestration and coordination layer using Mastra (Multi-Agentic Orchestrator)

Ensure platform observability and alerting via Azure Monitor and Azure Log Analytics

Implement evaluation pipelines for LLM outputs using Azure ML

Apply guardrails and output validation using Azure OpenAI and Azure Machine Learning

Manage secrets and configuration securely via Azure Key Vault

Contribute to the technical culture of the hub: code reviews, documentation, architecture decisions, and engineering best practices

Node.js or.NET 8 (ASP.NET Core, Entity Framework Core)

Azure Data Factory — ingestion, chunking, cleaning, DQ checks

Azure Document Intelligence — document parsing and understanding

Azure Cognitive Search — vector indexing and sema

📌 Senior Backend Developer (Madrid)
🏢 ISG International Service Group
📍 Madrid