Sergey Linev Email & Phone Number

Russia

Yekaterinburg, Sverdlovsk, Russia

Moscow, Moscow City, Russia

Leading a team of 20+ DA/DS with the key focuses:- Improving the OPS process culture by increasing reporting coverage (from 20% to 60%) and key metrics monitoring- Launch of DS-stream: optimization ML models to save money in the mostexpensive part of OPS: operations with cash, ATMs and plastic cards withthe estimated effect of 110M+ rubles per year.

Moscow, Moscow City, Russia

• Joined Yandex Ads team to create better tools and procedures in competitive analytics of advertising market. Team results:
• My team had grown up to 10 analysts
• Had explored tons of data from external sources to build an automated monthly report of Ads budget split between top players that became the main KPI of our Ads team performance
• Made a deep dive into perspective segment of the digital ads (battle for SMB clients with Instagram and marketplaces) resulted with the business model for +20% growth of the segment
• Reinvented Search market share estimation methodology that now includes sessions from marketplaces and classifieds (inc. sessions in apps). It became an analytical basis for 5-Y Search business plan with calculated.
• Implemented our forecasting framework to model for each of 5000 Ad-agency channels' revenue. Reduced lag in a calculation of our partners' payments from several days to 1-2 hours

Moscow, Russian Federation

• Continued to build the best KPI analytics for Yandex Search Business Group as a team leader. Team results:
• Build up a team of 5 analysts from scratch
• Expanded my zone of responsibility to Yandex Browser and Yandex Ads services in anomaly monitoring and investigation. Investigated more than 100 incidents each year.
• Consolidated our market share calculations as a base for launch Yandex Radar service that became the main source for our IR reporting
• Shifted the focus from monitoring to predictive analytics: made forecasting models of market share, search queries and Ads revenue with a single digit accuracy by MAPE
• Integrated the results of our forecasting models into budgeting process by providing Ads revenue baseline and key factors of its upcoming dynamics

Moscow, Russian Federation

• I took responsibility to enhance a process of monitoring and investigating anomalies in Yandex Search key metrics.Key results:
• Improved calculation of search market share by adding a big amount of slices, using internal (based on Yandex Metrica) and external data (taking data from Liveinternet, Comscore, TNS and others)
• Implemented procedure of root cause analysis for anomalies in data that made researches predictable with countable SLA (reduced time spent from weeks to days)
• Implemented the automated real-time monitoring system for Search market share that became a key signal for Yandex Search SRE team with a few minutes detection time

Moscow, Russian Federation

Russia