Salary: £25,000 - 60,000 per year Requirements: Strong experience in mobile application development Experience with .NET MAUI or Xamarin Solid understanding of MVVM / MVU patterns Experience building production-ready mobile applications Strong problem-solving skills and attention to quality Comfortable working in collaborative, cross-functional teams Responsibilities: Develop and maintain cross-platform mobile apps using .NET MAUI Build mobile-first solutions for Android and iOS Integrate with backend APIs and third-party services Optimise performance, responsiveness and usability Contribute to architecture and development standards Troubleshoot and resolve complex technical issues Collaborate with UX/UI teams to deliver high-quality user experiences Mentor developers and support technical growth Technologies: Android Backend Support Mobile MVVM Xamarin iOS UX UI Design ASP.NET Azure C# CI/CD Cloud REST More: We are a global non-profit organization operating across over 70 countries, tackling some of the worlds most pressing challenges. Join us as a Senior .Net Developer to help build and evolve cross-platform mobile applications that have real-world impact. We offer a modern tech stack with a focus on quality and scalability, and provide an opportunity to shape mobile development practices within a collaborative, mission-driven culture. This is a remote position. last updated 17 week of 2026