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Backend AI engineer

  • Hybrid
    • Barcelona

Job description

About the Role

We are looking for a Senior AI Engineer to join a growing team focused on building and deploying cutting-edge AI solutions in production environments.

This role combines software engineering, cloud development, and Generative AI, requiring a hands-on professional capable of designing, developing, deploying, and maintaining end-to-end AI-powered applications.

You will work closely with AI Engineers, Data Scientists, and Front-End Developers to build scalable and reliable solutions leveraging Large Language Models (LLMs), Retrieval-Augmented Generation (RAG), and cloud-native Azure services.

Key Responsibilities

  • Design, develop, and maintain scalable backend services and APIs using Python.

  • Build and deploy enterprise-grade AI solutions on Microsoft Azure.

  • Integrate Large Language Models (LLMs) and Generative AI capabilities into production applications.

  • Design and implement Retrieval-Augmented Generation (RAG) architectures.

  • Develop prompt engineering strategies and optimize LLM interactions for business use cases.

  • Build intelligent document processing solutions leveraging LLMs and AI services.

  • Integrate capabilities such as semantic search, document understanding, speech-to-text, and AI agents.

  • Collaborate with cross-functional teams to ensure seamless integration of AI services and applications.

  • Monitor performance, troubleshoot production issues, and continuously improve solution reliability and scalability.

  • Contribute to technical architecture decisions and challenge existing implementations to improve code quality and maintainability.

  • Stay up to date with emerging trends and innovations in Generative AI, LLMs, and AI engineering.

Job requirements

Required Experience & Skills

Technical Skills

  • Strong software engineering background with extensive experience in Python.

  • Experience developing backend applications, microservices, and REST APIs.

  • Proven experience working with Large Language Models (LLMs) and Generative AI solutions.

  • Hands-on experience with Prompt Engineering beyond basic prompt creation.

  • Experience designing and implementing Retrieval-Augmented Generation (RAG) solutions.

  • Knowledge of NLP concepts such as embeddings, semantic search, document understanding, and entity extraction.

  • Experience deploying and managing cloud solutions on Microsoft Azure.

  • Understanding of AI solution lifecycle, deployment, monitoring, and optimization.

Nice to Have

  • LangChain, LlamaIndex, Semantic Kernel, or similar AI orchestration frameworks.

  • Intelligent Document Processing (IDP).

  • OCR and document extraction technologies.

  • Speech-to-Text solutions.

  • AI Agents and agentic workflows.

  • Node.js development experience.

  • Microsoft Bot Framework.

  • Docker and containerized deployments.

  • CI/CD and DevOps practices.

 

Interested in learning more? We'd love to hear from you. Reach out and let's schedule a conversation to discuss the opportunity.

Hybrid
  • Barcelona, Catalunya [Cataluña], Spain
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