




Job Summary: As a Backend Software Engineer - AI, you will design and scale innovative and secure systems, applying engineering best practices, proprietary AI models, and continuous learning. Key Highlights: 1. Design and scale innovative and secure AI-powered systems 2. Work in a dynamic environment with cutting-edge technology 3. Lead challenging and high-impact projects As a **Backend Software Engineer \- AI** 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 with 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:** * Analyzing and developing new AI-focused features, including applications leveraging Large Language Models (LLMs), Anthropic Model Context Protocol (MCP), and Google Agent\-to\-Agent Protocol (A2A), delivering significant impact across our multi-tiered services. * Defining and developing, together with specialist teams, services that virtualize infrastructure resources. * Maintaining production systems and supporting customer-facing teams in bug resolution. * Supporting developers in adopting and utilizing the platform. * Contributing to the technical growth of the team and system by raising the bar on code quality and development methodologies, while ensuring application stability and scalability. * Identifying user needs and proposing tool enhancements. **What we’re looking for:** * Experience with Golang and the API and microservices ecosystem. * Knowledge of Large Language Models (LLMs), Agents, and Model Context Protocol (MCP) is a plus. * Experience with relational and NoSQL databases. * Understanding of general system architecture, with strong expertise in cloud and microservices architectures. * Deep knowledge of observability and monitoring tools: DataDog, NewRelic, and Grafana. **Ready to leave your mark on Latin American technology?** Apply now and join our mission! Hybrid work model. Office located in Osasco \- SP


