A CIFS/Samba developer designs, implements, and maintains software that facilitates network communication between different operating systems like Windows and Linux via the Common Internet File System (CIFS) or Samba protocols. Their work enables file and print sharing across networks. They troubleshoot connectivity issues, enhance protocol effectiveness, and ensure data security. They also collaborate with other developers to integrate these protocols into larger systems or applications. Their role requires them to stay updated with advancements in network technologies and the CIFS/Samba protocols to optimize interoperability and performance.