Job Summary: You will design and scale innovative and secure systems in a dynamic environment leveraging cutting-edge technology, applying sound engineering practices to democratize e-commerce and financial services. Key Responsibilities: 1. Design and scale innovative and secure systems 2. Work with cutting-edge technology and proprietary AI models 3. Democratize e-commerce and financial services As a **Software Developer Backend** at Mercado Libre, you will design and scale innovative and secure systems that solve real-world, high-impact problems. You will work in a dynamic environment using cutting-edge technology, applying sound engineering practices, proprietary AI models, and continuous learning—all aimed at democratizing e-commerce and financial services across Latin America. Imagine tackling challenging, dynamic, and innovative projects—and being **responsible for:** * Writing 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 expertise. * Designing distributed architectures using advanced patterns. * Defining testing and observability strategies, implementing automated tests, metrics, and logs to ensure reliability and performance. **What are we looking for?** * Up to 3 years of experience in similar roles, with strong proficiency in languages such as Java, Golang, Python, or similar. * Knowledge of relational and non-relational databases. * Experience designing and developing distributed architectures and microservices. * Experience with testing, ensuring high security standards. **Are you ready to leave your mark on Latin American technology?** Apply now and join our mission! Hybrid work model. Location: AMBA, Buenos Aires.