This position is listed on behalf of a partner company, which manages all applications and next steps. Our partner is looking for a Desenvolvedor Back .NET ESPECIALISTA based in Brazil. We are looking for an experienced backend development specialist to design and implement high-quality, scalable, resilient, and secure software solutions. In this role, you will leverage your expertise in C# and the .NET ecosystem to shape software architecture and drive technical excellence. You will make critical architectural decisions, balancing performance, maintainability, security, and long-term flexibility. Working with modern development practices, you will contribute to microservices architectures, automated testing, and reliable system integrations. You will also ensure that technical decisions are clearly documented and aligned with business objectives. This is an opportunity to solve complex engineering challenges, collaborate with multidisciplinary teams, and contribute to robust solutions in a dynamic, innovation-driven environment.