Castro has had a remarkable career in the media industry, having once been the youngest radio owner in American history and founder of what was the largest privately-held Hispanic focused radio company in the country. Notably, he also served as a member of the Special Committee of Independent Directors that negotiated the separation transaction of Time Warner Cable and Time Warner Inc in 2014. Now the Founder and Chief Executive Officer of El Dorado Capital, a Houston based investment firm, Castro has previously served as a member of the company's External Advisory Board.