Job Summary: As a Senior Data Engineer at Mercado Livre, you will design and scale innovative and secure systems, working with cutting-edge technology and AI to democratize e-commerce. Key Highlights: 1. Design and scale innovative and secure systems 2. Work with cutting-edge technology, AI, and continuous learning 3. Democratize e-commerce and financial services in Latin America As a **Senior Data Engineer** at Mercado Livre, you will design and scale innovative and secure systems that solve real-world, high-impact problems. You will work in a dynamic environment leveraging cutting-edge technology, applying engineering best practices, proprietary AI models, and continuous learning—all aimed at democratizing e-commerce and financial services across Latin America. Imagine\-yourself leading challenging, dynamic, and innovative projects and **being responsible for**: * Prioritizing and helping your client area organize data-related demands according to data best practices. * Developing and optimizing data pipelines and ETL processes, ensuring scalability and performance. * Operating in high-traffic, high-availability environments, guaranteeing data integrity and reliability. * Analyzing and structuring large volumes of data to support the company’s strategic decisions. * Ensuring data quality, consistency, and governance—documenting processes and applying best practices. * Solving complex problems and proposing continuous improvements for efficiency and automation. **What we’re looking for in you?** * Advanced experience with SQL and relational and non-relational databases. * Proficiency in Python for data manipulation and transformation. * Knowledge of data architecture and engineering best practices (modeling, partitioning, optimization). * Familiarity with agile methodologies (Scrum, Kanban) and code versioning (Git). * Strong analytical capability for data exploration, visualization, and storytelling to support decision-making. * Experience leading complex data projects, ensuring seamless integration and efficient delivery to business areas. Are you excited to leave your mark on Latin American technology? Apply now and join our purpose! Hybrid work model. Melicidade Office (São Paulo).