As a **Backend Software Engineer** 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 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**: * Developing, implementing, and maintaining end\-to\-end software tests, ensuring high quality standards across multi-product environments. * Collaborating with Product and UX teams to gather requirements, documenting functional and technical specifications. * Leading cross\-team initiatives, facilitating integration and collaboration across analysis, solution design, development, testing, and implementation. * Defining and monitoring performance and quality metrics, using them to propose continuous improvements to products and support application operations. * Defining and executing technical initiatives focused on technological evolution and project scalability. **What are we looking for?** * Strong expertise in Go or other backend stacks. * Experience with relational databases such as MySQL, and non-relational databases such as KVS. * Experience developing applications using hexagonal architecture and working with asynchronous messaging between services. * Experience in secure development, including knowledge of common vulnerabilities and security best practices. * Experience with component-based architectures and a deep understanding of their lifecycle. **Are you ready to leave your mark on Latin America’s technology landscape?** Apply now and join our mission! *Hybrid work model. Polo Dot site, Buenos Aires.*