As a **Senior Backend Software Engineer** at Mercado Libre, 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, 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**: * Ensuring the quality of the storefront on Mercado Libre, guaranteeing that listed products comply with platform policies and are free from counterfeits. * Developing resilient, robust, high-performance, and maintainable solutions. * Refining, estimating, prioritizing, and executing tasks with freedom, autonomy, and self-management—aligned with achieving team objectives. * Proposing simple yet impactful business solutions to complex problems. **What are we looking for in you?** * Availability to work in a hybrid mode. * Solid knowledge of programming tools and languages, such as proficiency in Golang/Java. * Experience working on highly concurrent applications. * Experience developing unit tests, integration tests, and stress tests. * Proficiency in design patterns and best practices for writing clean code. **Are you ready to leave your mark on Latin American technology?** Apply now and join our purpose! Hybrid work model. Location: Buenos Aires/Argentina.