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Backend Developer AI

España💼 Full-time🗓 2026-06-09 → 2026-08-09

Core

Design, develop, and implement production applications based on Large Language Models (LLMs) to accelerate digital transformation for clients.

Role type

Senior Backend Developer specializing in AI/LLM applications

Builds

Production-grade LLM applications integrating APIs, RAG, and agentic workflows

Domain

Artificial Intelligence, Cloud Computing, Backend Engineering

Deliverable

production ML models

Required skills

LLM application design and implementation, API integration (OpenAI, Claude, Gemini, open-source models), prompt engineering, function calling, structured outputs, RAG, embeddings, latency optimization, LLM security (prompt injection prevention), Python, Java, TypeScript/Node.js, REST APIs, microservices architecture, CI/CD, Docker, Kubernetes, LangChain, LangGraph, LlamaIndex, Semantic Kernel, AutoGen, vector databases (Pinecone, Weaviate, pgvector, Chroma), Elasticsearch/OpenSearch

Preferred skills

MCP (Model Context Protocol), frontend development (Angular or React)

Technologies

Azure, AWS, GCP, LangChain, LangGraph, LlamaIndex, Semantic Kernel, AutoGen, Pinecone, Weaviate, pgvector, Chroma, Elasticsearch, OpenSearch, Docker, Kubernetes

Responsibilities

Design and implement LLM-based applications in production environments, integrate various LLM APIs and open-source models, develop agentic workflows and multi-step processes, optimize costs and latency for LLM applications, ensure LLM security and input validation, build and maintain backend microservices and APIs

Seniority

Senior, hands-on IC

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