At this post, he replaced Anton Golikov, who left the company on 17 October 2011 after his contract expired.

Unitel Director-General Andrei Safronyuk said that Denis contributed to development of Beeline in countries, where Vimpelcom Ltd. Operates. He said that his experience could be useful as the company develops 3G networks and introduces 4G.

Denis Kotlyarenko said that he starts work in Uzbekistan with great enthusiasm. He said that last year the company actively constructed 3G network and now started to test LTE network, which will improve quality of mobile Internet.