Television engineering involves skills borrowed from other disciplines, namely electrical / electronic and computer engineering. Siting a (hypothetical) case study where a television facility is being planned for construction involves the collaboration of several disciplines including the architecture, (who usually maintains oversight of all the relevant trades), the facility owners and their representatives, (typically the chief engineer, production managers, directors, and other technical persons).
There is also a business side to television engineering as with most engineering disciplines. That is usually the requirement to maximize the stakeholders or owners capital investment pursuant to the production and delivery of television content. Television facilities invest heavily in purpose-built systems to facilitate the end product. As such, your goal as an engineer is to extract the maximum amount to performance possible out of the system while also maintaining the system when things go wrong - or preferably before things go wrong.