Overview: Caixa Mágica is looking for aAI / Data Engineer, focused on the development, maintenance, and evolution of application solutions, data, Machine Learning, and GenAI.What will you do? Lead technical activities related to code development, maintenance, and optimization. Work with Python, PySpark, Databricks, and application technologies. Support the evolution of solutions in Microsoft Azure, including Azure Data Factory. Maintain and improve data and Machine Learning pipelines. Support the maintenance of regression and classification models in production. Develop and maintain GenAI solutions, including integrations with OpenAI APIs. Implement and maintain RAG solutions, single-agent and multi-agent architectures. Develop and maintain REST APIs. Ensure best practices in development, testing, documentation, and code quality. Support deployments, environment management, and troubleshooting.What are we looking for? Up to 5 years of experience in similar roles. Bachelor's degree in Computer Engineering, Software Engineering, or a similar field. Experience with Python, PySpark, and Databricks. Solid experience with Microsoft Azure and Azure Data Factory. Knowledge of Machine Learning, GenAI, and LLM-based architectures. Experience with LangChain, LangGraph, RAG and, preferably, Langfuse. Knowledge of SQL/PostgreSQL, vector databases, and document indexing. Experience with REST APIs, GitHub, pytest, SonarQube, and DevOps practices. Good communication skills, critical thinking, and problem-solving ability. English required; Portuguese and Spanish are valued. Knowledge of Agile, JIRA, and Confluence is valued.What can you expect from us? A permanent job contract for a long term project; Tech equipment + SIM Card + personal smartphone; Health and Life Insurance; Social events and team buildings; The commitment of letting you grow with us, and be rewarded accordingly; A dynamic and young team that will be always there to support you; Training in the latest technologies; Coffee, fruits, snacks and a warm welcoming when you pass by the office.