As a **Backend Software Engineer** at Mercado Libre, 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 in Latin America. Our squad operates at the core of Mercado Pago, leading the processing of millions of PIX transactions in Brazil as well as financial movements across Latin America. We are at the heart of developing MeLi's new banking system. Imagine yourself undertaking challenging, dynamic, and innovative projects and **being responsible for:** * Developing high-quality code, complex refactors, and code reviews using **Gen AI as the central agent and efficiency enabler**. * Designing and maintaining robust, scalable APIs to ensure resilient, modular solutions aligned with business objectives. * Making data-driven decisions by leveraging dashboards, analytical tools, and the team's collective experience. * Designing distributed architectures by applying advanced patterns. * Defining testing and observability strategies, implementing automated tests, metrics, and logs to ensure reliability and performance. * Gathering requirements through interaction with various technical and non-technical teams, designing and coding solutions, testing, documentation, rollout, and maintenance. Full Cycle operational model. **What we look for in you?** * Solid experience in similar roles, mastering languages such as Golang, Java, and/or Python. * Knowledge of relational and non-relational databases. * Experience designing and developing distributed architectures and microservices. * Experience with testing, ensuring high security standards. * Motivated to learn and tackle big challenges, with ease in articulating and communicating with technical and non-technical areas. **Are you excited to leave your mark on Latin America's technology landscape?** Apply now and join our mission! Hybrid work model. Office in Florianópolis