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Job Summary: Design and scale innovative and secure systems as a Senior Backend Software Engineer, impacting e-commerce and financial services across Latin America. Key Highlights: 1. Work with cutting-edge technology and proprietary AI models. 2. Develop high-quality code and design robust APIs. 3. Apply advanced patterns in distributed architectures. As a **Senior Backend Software 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 powered by cutting-edge technology, applying engineering best practices, proprietary AI models, and continuous learning—all to democratize 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 collective team experience. * Designing distributed architectures by 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 mastery of 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. * Experience using AI models in development activities—for example, Claude Code, Copilot, Windsor, Cursor, Transfer, Gemini, GPT, and others. **Are you excited to leave your mark on Latin America’s technology landscape?** Apply now and join our mission! Hybrid work model. Office in São Paulo
