A Lync Server developer is responsible for creating, implementing, and managing communication solutions using Microsoft's Lync Server . They work on the integration of instant messaging, VOIP, and conferencing capabilities into corporate environments. They design and develop applications, troubleshoot issues, and provide technical support to enhance communication systems. They also collaborate with other IT professionals to ensure the security and efficiency of the server. Furthermore, they are involved in the planning and execution of updates and upgrades, as well as the maintenance of documentation about the server's configuration and operation.