Job Summary: Design and scale innovative and secure systems to democratize e-commerce and financial services in Latin America, applying AI and continuous learning. Key Highlights: 1. Dynamic environment with cutting-edge technology and proprietary AI models. 2. Design and scale innovative and secure systems. 3. Mentor and support less experienced colleagues. As a **Backend Software Engineer** at Mercado Livre, you will design and scale innovative and secure systems that solve real, high-impact problems. You will work in a dynamic environment with cutting-edge technology, applying engineering best practices, proprietary AI models, and continuous learning, with the purpose of democratizing e-commerce and financial services across Latin America. Imagine yourself leading challenging, dynamic, and innovative projects and **being responsible for:** * Taking ownership of assigned tasks, managing the entire development process from analysis through production deployment; * Supporting operations/applications by resolving bugs and ensuring continuous functionality; * Identifying and proposing improvements and new solutions in processes and applications, challenging existing standards; * Mentoring and supporting less experienced colleagues; * Performing on-call duties, supporting applications according to the scheduled rotation; * Collaborating with teams across multiple countries (Argentina, Mexico, Brazil, Colombia, among others). **What we’re looking for in you?** * Solid backend application development experience with distributed architecture, using languages such as Go, Java, C#, C, or C++. * Critical thinking to build applications that are easy to maintain and scale. * Solid database knowledge. * Ability to analyze complex problems during application support. * Experience in monitoring and observability is considered desirable. * Experience in AI-driven development to generate and evolve code. **Are you excited to leave your mark on Latin America’s technology landscape?** Apply now and join our mission! Work mode: Hybrid. Office: São Paulo.