Marketing of finding advertisers on OTT Platform

I am looking for help to market the OTT platform Startime by finding international companies who can advertise on it. The target audience for these advertisements will be a general audience. I am looking for someone who has experience in finding the right advertising partners for a OTT platform such as Startime and is familiar with the specifics of how it works. Whether it is researching potential leads, designing creative ad campaigns, or even setting up the deals themselves, I am looking for someone who can help me successfully market Startime and attract the right advertising partnerships.