A Microsoft MDOP (Microsoft Desktop Optimization Pack) developer works on a suite of technologies available as a subscription for Microsoft Software Assurance customers. Their job includes creating and managing virtual machine environments, application virtualization, and advanced system restore technologies. They also work on developing tools for desktop management, reducing downtime, improving system performance, and ensuring a secure user environment. They may also troubleshoot and resolve issues related to these technologies. Their work enables businesses to better manage their Windows environments, streamline deployment processes, and improve overall productivity.