Naspers promotes Yankulov to CEO of OLX Bulgaria by Andrzej Sowula in Insiders 03 Mar 2017 Kamen Yankulov has been promoted internally to CEO of OLX Bulgaria. He will lead the development of OLX in Bulgaria starting since April 1.This article is only available to AIM Group clients. Please subscribe now or log in to view. Share Kamen YankulovnaspersOlx.bgSpas Slivkov Andrzej Sowula Andrzej Sowula has been a writer and an analyst for AIM Group since March 2013, focusing on the Polish market. As a journalist, he has worked in Poland for regional newspapers and national Internet-focused magazines for almost a decade. He has also substantial both in-house and in a PR agency experience as a PR specialist. Currently, he owns a small PR consultancy in Poland called PR Solutions. Andrzej has graduated from Journalism, Political Science and Business and Management at Jagiellonian University. He lives and works in Krakow.