Backend AI engineer

Business Insights
Barcelona, Spain
yesterday

Role details

Contract type
Permanent contract
Employment type
Full-time (> 32 hours)
Working hours
Regular working hours
Languages
English

Job location

Barcelona, Spain

Tech stack

API
Artificial Intelligence
Software Applications
Azure
Cloud Engineering
Software Quality
Continuous Integration
DevOps
Python
Named Entity Recognition
Node.js
Cloud Services
Search Technologies
Software Engineering
Speech Recognition
Large Language Models
Multi-Agent Systems
Prompt Engineering
Generative AI
Backend
Build Management
Containerization
AI Platforms
Performance Monitor
Front End Software Development
REST
Docker
Microservices

Job description

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.

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.

Apply for this position