Senior Full Stack Engineer

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior Full Stack Engineer based in Brazil. Join a forward-thinking engineering environment where you will build production-ready AI agents and intelligent applications that solve complex business challenges. In this senior role, you will combine full-stack development expertise with hands-on experience in large language models, cloud infrastructure, and AI-assisted engineering. You will design secure, reliable agent workflows, establish rigorous evaluation processes, and ensure AI-powered features meet high standards for accuracy, performance, and maintainability. Working with a cross-functional team, you will develop scalable services and internal tools while strengthening observability, automation, and deployment practices. You will also help teams adopt AI development tools effectively and responsibly. This opportunity offers remote flexibility, continuous learning, and the chance to contribute to impactful projects serving international clients.