A Desktop Application Development developer designs, codes, tests, and debugs software applications for desktop computers. They work with different programming languages like Java, C++, or .NET to build user-friendly interfaces and optimize software for performance. They also ensure applications are compatible with various operating systems like Windows, macOS, or Linux. They collaborate with other software professionals to define requirements, integrate systems, and troubleshoot issues. Additionally, they may perform updates or modifications to existing applications, ensuring they remain functional and secure. They are also responsible for documenting the software development process and maintaining version control.