Acquired by eBayResponsibilities: data pipelines and software development for brand protection on World’s Top 3 marketplace

Responsibilities: implementation of statistical analysis and data processing, audience segmentation and analyticsSelected accomplishments: • Managed audience segmentation by ingesting and analyzing data from more than 50 media resources. Results: increased the average audience coverage of user segments by 30%.• Validated 100 terabytes of event logs and traffic analysis according to the Top-100 counter. Results: improved quality in the data mart by reducing junk and duplicates from 5% to < 1%.• Developed metrics, KPIs, and Tableau-based dashboards for evaluating more than 100 advertising campaigns. Results: improved quality of ad campaigns by 2x (from 1,5% to 3%).

Responsibilities: system administration (updates management, settings, monitoring, recovery after failures, incidents prevention and resolution); installation and configuration of service packs.Selected accomplishments: • Analyzed 15 fault events on industrial systems, and helped to implement measures to eliminate and prevent them. Results: system fault tolerance reached 99.99%.• Worked with multi-skilled team (analysts, software developers, QA engineers, support engineers) to improve uptime of the system. Results: incident time resolution reduced by 37%.• Supported the maintenance of a large payroll system with over 1 million clients and 100 million of payments per month. Results: 100% of payroll contracts moved to one centralized data mart.