Konstantin Kostadinov joined Viber in 2016 as a Sales Manager. Currently, he is a Sales Director CEE in Viber. He is mainly responsible for identifying and building potential partnerships, developing business plans and strategies for boosting sales within Viber for the whole region.

Previously he worked at KPMG Bulgaria as a Senior Sales lead as well as at Deloitte. At RSM Bulgaria his key role was to develop and execute sales as a Senior Partner