Tsonko has worked in writer`s rooms on a number of TV series in Bulgaria including "Forbidden Love" (2009), co-produced by Fremantle Media. In London, Tsonko wrote and produced the comedy short film Catch Him (2017). In 2017, his feature comedy-drama "Lemongrass & Morphine" won a development option with TriForce Creative Network as part of their Writers Incubator scheme. His other notable works include Undercover Season 1.