A Microsoft Deployment Toolkit (MDT) developer designs, manages, and maintains deployment processes for Windows OS. They configure and automate the deployment of software applications and updates using MDT. They also create and manage task sequences to automate system installations and configurations. The developer troubleshoots deployment issues, optimizes deployment processes for efficiency, and ensures system compatibility. They work closely with IT teams to understand requirements, deliver solutions, and provide training where necessary. Their role also involves documenting the deployment processes and maintaining up-to-date knowledge of Microsoft products and deployment technologies.