Key Achievements and Projects:• Data Warehouse Design. Implemented a DataVault 2.0 model with separate RAW, STAGE, and BI layers, ensuring data versioning, flexibility, and scalability. This also reduced deadlocks and improved data delivery latency.• Development Best Practices. Authored and implemented development best practices, introducing automatic code linting and formatting, speeding up the development and code review processes.• Audit and Process Migration. Conducted an audit and migration of existing processes to a new Apache Airflow infrastructure, eliminating redundant and legacy processes.• Query Optimization. Introduced hybrid data schemas (snowflake and star) on the BI layer, reducing data redundancy and optimizing query performance.• Monitoring and Alerts. Established a monitoring system with dashboards and alerts to detect issues early, allowing faster response times before users were impacted.• Process Optimization. Organized task management in Yandex Tracker by implementing two-week sprints, daily stand-ups, and weekly demos and retrospectives. Trained the analytics team to work with this structure, improving productivity and task tracking. Created task-setting guidelines for better clarity.

Key Achievements and Projects:• Data Platform design. Developed analytics data platform based on Kimball's methodology, implementing a star schema that provided fast and convenient access to data for analyzing key marketing metrics.• ETL Process Optimization. Optimized ETL processes to accelerate the extraction and processing of large volumes of data from the data warehouse, reducing delays and ensuring timely dashboard updates.• User Traffic Analysis. Built a system for analyzing user acquisition sources for the exchange, enabling the marketing team to develop more effective strategies.

Key Achievements and Projects:• ETL Process Development. Developed ETL processes on Oracle databases and delivered the data to target tables in the BI layer.• Reporting and Visualization. Ensured data delivery to Oracle BI and Oracle APEX for comprehensive report generation and visualization, improving data accessibility for analysis.