We are looking for a highly skilled Senior Software Engineer with strong expertise in .NET backend development and experience deploying mobile applications for iOS and Android, including App Store / Play Store management. Responsibilities Develop and maintain backend services using .NET Build, deploy, and manage mobile applications for iOS and Android Handle App Store and Google Play Store submission, release, and maintenance processes Collaborate with cross\-functional teams to deliver high\-quality mobile and backend solutions Work with modern cross\-platform frameworks to support mobile development Requisitos: Required Skills Senior\-level experience in .NET Backend Development (mandatory) Experience with deployment and release processes for iOS and Android Knowledge in at least one cross\-platform framework: MAUI, Flutter, or React Native Must be proficient in at least one and willing to work with the others Strong experience with SQL Server Solid understanding of mobile architecture, CI/CD, and best practices * Preferred Qualifications Experience working in agile environments Strong communication and problem\-solving skills Ability to collaborate in a fast\-paced, distributed team Fluent English Hybrid in Florianópolis