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Improved porn detection, refining web search results:• Trained classification model to detect & filter porn websites: Reduced False Negative Rate by 28%Rework news-search engine:• Apply NLP for semantic search to improve result: increase CTR by 25% and long-click metrics by 10%.• Split news-search from old monolithic service into independent vertical micro-service.Refactored and modernized legacy football-search service, serving 100k daily users:• Modernized tech… Show more Improved porn detection, refining web search results:• Trained classification model to detect & filter porn websites: Reduced False Negative Rate by 28%Rework news-search engine:• Apply NLP for semantic search to improve result: increase CTR by 25% and long-click metrics by 10%.• Split news-search from old monolithic service into independent vertical micro-service.Refactored and modernized legacy football-search service, serving 100k daily users:• Modernized tech stack to Spring Boot: 700% faster service initialization, 10ms/request at 6000 RPM• Ensured thread safety, transactional data integrity, and automated 100% test coverage during migrationSpeed up reaction to government bans:• Analyzed 100 TB browser data to find patterns to automate detection of government-banned websites• Applied effective ban detector: Increased ClickWin score (internal search-satisfaction metric) by 5%, and reduced reaction time to government bans from 8 days to 1 day Show less

Tasks: E2E product owner for HappyTime - Attendance & leave requests management tool for HRM, including:- Analyse customers' requirements- Design architecture & implement (fullstack)- Lead frontend team of 4 developers & review teammates' code- Explore innovative new tools & technologies Achievements:- Reached +8000 monthly active users within 12 months of product's launch by analyzing customer needs & designing the product that fits business strategy - Reduced… Show more Tasks: E2E product owner for HappyTime - Attendance & leave requests management tool for HRM, including:- Analyse customers' requirements- Design architecture & implement (fullstack)- Lead frontend team of 4 developers & review teammates' code- Explore innovative new tools & technologies Achievements:- Reached +8000 monthly active users within 12 months of product's launch by analyzing customer needs & designing the product that fits business strategy - Reduced time-to-first-action by 90% by identifying high-load API calls, and then restructuring and optimizing those APIs- Grew frontend team from 1 to 4 developers by building up business case for additional required resources Show less