This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Software Developer (Full Stack) – Contract Only based in Brazil. We are seeking an experienced Full Stack Software Developer to build, enhance, and maintain scalable, secure, and reliable applications within a modern technology environment. In this hands-on development role, you will contribute to new feature development, legacy system modernization, and integrations that support a global technology platform. You will work across the frontend and backend, combining React, C#, .NET Core, and Python with cloud-based services and data systems. Your work will help improve application performance, software quality, and the reliability of critical digital solutions. Collaborating with cross-functional teams in an Agile environment, you will contribute to architecture decisions, automation, DevOps practices, and secure development standards. This remote contract opportunity is ideal for a developer who enjoys solving complex technical challenges and using modern engineering tools, including AI-assisted development, to deliver meaningful results.