The mixing of English with national languages in business communication is a consequence of global processes: the development of transnational corporations, modern technologies, the intensification of communication flows and the dominance of English in intercultural communication. Mixing and switching of language codes is quite often observed in the corporate media discourse of IT companies. For organizations in this sphere, English is the main language of business communication, but its use goes beyond professional slang and terminology, creating characteristic forms of language codes mixing. The purpose of the research presented in the article is to identify and analyze situations of mixing English and Russian in the corporate media discourse of IT companies. The research material was corporate media texts in Russian and English posted on the pages of official websites, corporate blogs and in the social networks Twitter and Facebook. In the analyzed texts in Russian, English inclusions (phrases, individual words and their parts) are often observed to denote work programs and tools, corporate events. As part of the professional slang of IT professionals, English words are transmitted using the Cyrillic alphabet and in accordance with the rules of Russian grammar. The influence of English on Russian media discourse in the IT field is also observed in the expansion of the meanings of some words. In Russian media texts, there are also phrases that are not typical for the Russian language, but represent a literal translation of English phrases. English-language sentences are used in Russian texts as mottos or slogans of the company, as congratulations or advice. As a result of the content analysis of the selected media texts, it was also found that along with the English language, the values typical for the discourse of American corporations are being borrowed. It was found that the value dominants of the corporate discourse of IT companies are change and progress, success, equality, partnership.