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PhD in Economics, worked in major Russian companies: built analytics at the Lenta network, was responsible for analytical processes at Yota, did forecasting at Baltika, headed the analytics department and then the marketing department at Yulmart, headed the Data & BI direction at US company Airpush. In 2019, he founded Valiotti Analytics, where he provides analytics consulting for mobile and digital startups. Co-founder of the open source self-service BI platform Mprove. Author of the blog leftjoin.ru.