Job description

Context

- Location: Barcelona
- Work mode: Hybrid, 2 to 3 days onsite per week
- Start date: 21 September 2026
- Duration: Until 31 December 2026
- Extension possibility: Yes - throughout 2027
- Language(s): Spanish and English

We are looking for an AI Engineer to contribute to the development of projects within an AI program. The mission focuses on developing scalable backend systems and APIs to support AI solutions built on Azure services, and on integrating AI models into production environments. Technical environment: Microsoft.

Missions

- Develop scalable backend systems and APIs to support AI solutions using Azure services.
- Build and optimize cloud-based AI solutions.
- Integrate advanced AI functionalities such as Retrieval-Augmented Generation (RAG), speech-to-text, and other AI models into production environments.
- Use resources such as Azure Functions, App Services, Cosmos DB, and Azure Key Vault to enhance solution performance, security, and efficiency.
- Collaborate with data scientists, AI engineers, and frontend developers to ensure seamless integration of AI models and solutions.
- Monitor system performance, troubleshoot issues, and resolve problems related to backend services and AI model deployments, ensuring high availability and reliability.
- Maintain an in-depth understanding of market trends in Generative AI, particularly around LLMs and prompt engineering.
- Desired: design, develop,



and implement Intelligent Document Processing (IDP) solutions leveraging Large Language Models (LLMs).

Tools & Environment

- Azure Functions
- Azure App Services
- Cosmos DB
- Azure Key Vault
- Generative AI technologies (LLMs, prompt engineering)
- Retrieval-Augmented Generation (RAG)
- Speech-to-text integration

Working Conditions

- Contract duration: Until 31 December 2026 with extension possibility throughout 2027
- Location: Barcelona, hybrid work mode (2 to 3 days onsite per week)
- Start date: 21 September 2026
- Languages required: Spanish and English

Requirements

- 4 years of relevant experience in developing scalable backend systems and APIs supporting AI solutions on Azure

- Experience building and optimizing cloud-based AI solutions

- Proven skills in integrating advanced AI functionalities such as Retrieval-Augmented Generation (RAG), speech-to-text, and other AI models into production environments

- Hands-on experience with Azure Functions, App Services, Cosmos DB, and Azure Key Vault

- Ability to monitor, troubleshoot, and resolve issues related to backend services and AI model deployments

- In-depth understanding of market trends in Generative AI, particularly Large Language Models (LLMs) and prompt engineering

- Fluency in Spanish and English

- Preferred: experience in design, development, and implementation of Intelligent Document Processing (IDP) solutions leveraging LLMs

📌 AI Engineer - Permanent (Barcelona)
🏢 Collective.work
📍 Barcelona