Desenvolvedor Fullstack Sênior - C# Python React

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Desenvolvedor Fullstack Sênior - C# Python React based in Brazil. This is a senior full-stack development opportunity for an experienced engineer working across backend, frontend, cloud, and integration architecture. You will build and maintain robust software solutions using C#/.NET, Python, and React, contributing across the application lifecycle. The role combines hands-on development with modern AWS services, API design, relational databases, automation, and production operations. You will work on solutions that require reliability, scalability, and strong engineering practices in environments where technology supports critical business needs. Your responsibilities will span development, deployment, monitoring, troubleshooting, and ongoing application support. The position is suited to a technically strong professional who combines curiosity and product mindset with the ability to solve complex engineering challenges. You will have the opportunity to contribute to high-impact technology projects while working in a collaborative and innovation-focused environment.