About the Role
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
- Develop embedding generation pipelines using Azure OpenAI
- Design and manage multi-layer data storage: Azure SQL, PostgreSQL, Azure Cosmos DB (agent memory), Azure Blob Storage
- 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
- Implement authentication and RBAC using Azure Active Directory
- Manage secrets and configuration securely via Azure Key Vault
- Contribute to the technical culture of the hub: code reviews, documentation, architecture decision

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