Job Summary: As a Backend Software Engineer at Mercado Livre, you will design and scale innovative, secure systems to democratize e-commerce and financial services across Latin America. Key Highlights: 1. Develop high-quality code, perform complex refactors, and conduct code reviews. 2. Design and maintain robust, scalable APIs for resilient solutions. 3. Design distributed architectures applying advanced patterns. **Senior Backend Software Engineer - Marketplace** As a **Backend Software Engineer** at Mercado Livre, you will design and scale innovative, secure systems that solve real-world, high-impact problems. You will work in a dynamic environment leveraging cutting-edge technology, engineering best practices, proprietary AI models, and continuous learning—all 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:** * Developing high-quality code, performing complex refactors, and conducting code reviews. * Designing and maintaining robust, scalable APIs to ensure resilient, modular solutions aligned with business objectives. * Making data-driven decisions using dashboards, analytical tools, and the team’s collective experience. * Designing distributed architectures applying advanced patterns. * Defining testing and observability strategies, implementing automated tests, metrics, and logs to ensure reliability and performance. **What we’re looking for in you?** * Solid experience in similar roles, with strong proficiency in languages such as Java, Golang, and/or .Net. * Knowledge of relational and non-relational databases. * Prior experience designing and developing distributed architectures and microservices. * Experience with testing, ensuring high security standards. **Are you excited to leave your mark on Latin America’s technology landscape?** Apply now and join our mission! Hybrid work model. São Paulo office