A Cable/IP STB (Set-Top Box) Protocols developer designs, implements, and troubleshoots communication protocols for set-top boxes used in cable or IP (Internet Protocol) based television broadcasting. They ensure seamless transmission of data between the broadcasting station and the user's television. They work with technologies like IPTV, VoD, and OTT, and protocols like MPEG, DVB, and DOCSIS. They also collaborate with other teams to integrate these protocols into the broader system, maintain code, fix bugs, and improve performance. Understanding of networking, broadcasting standards, and software development is essential for this role.