Founding Backend Engineer — Valencia GenAI Platform

Isg International Service Group; Valencia; Híbrido; EUR 70.000 - 100.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Valencia hub

Senior engineering team

Descripción de la vacante

Isg International Service Group seeks a Senior Backend Developer to join a new Generative AI hub in Valencia. You will shape technical foundations, architecture, and production-grade AI services for the financial sector.

You will work on backend APIs, data pipelines, vector search, and agent orchestration, using Node.js or .NET 8 on Azure. This is a founding engineer role in a high-impact, high-speed environment.

Formación

• 5+ years of backend development experience in production environments.
• Strong proficiency in Node.js OR .NET 8 / ASP.NET Core (or both).
• Hands-on experience with Azure cloud services: ADF, Cognitive Search, OpenAI, SQL, Cosmos DB.

Responsabilidades

• Design and build backend services and APIs powering the Generative AI platform.
• Implement data pipelines using Azure Data Factory and Document Intelligence.
• Develop vector indexing and semantic search with Azure Cognitive Search and LightRAG.
• Create embedding generation pipelines using Azure OpenAI.
• Manage multi-layer storage: Azure SQL, PostgreSQL, Cosmos DB, Blob Storage.
• Integrate agent tooling with Langchain, Langgraph, FastAPI, MCP.
• Coordinate orchestration with Mastra for multi-agent workflows.
• Ensure observability with Azure Monitor and Log Analytics.
• Evaluate LLM outputs with Azure ML and guardrails with Azure OpenAI.

Conocimientos

Node.js

.NET 8

Azure cloud

RESTful APIs

Microservices

Docker

Kubernetes

SQL

RBAC

CI/CD

English fluent

Herramientas

Azure Data Factory

Azure Cognitive Search

Azure OpenAI

Azure SQL

Cosmos DB

Langchain

Langgraph

FastAPI

MCP

Mastra

AKS

Azure Monitor

Azure Key Vault

Descripción del empleo

Isg International Service Group seeks a Senior Backend Developer to join a new Generative AI hub in Valencia. You will shape technical foundations, architecture, and production-grade AI services for the financial sector.

You will work on backend APIs, data pipelines, vector search, and agent orchestration, using Node.js or .NET 8 on Azure. This is a founding engineer role in a high-impact, high-speed environment.