Sumsub — Global leader in KYC/AML verification securing the user journey. ● Developed a self-serve Client Insights dashboard for the Customer Success team, providing real-time metrics and reducing ad-hoc data requests by 30%. ● Shifted over 50 core SQL scripts to dbt, improving structure and cutting maintenance effort by 20%. ● Built a scalable, end-to-end KPI tracking framework for Customer Success Managers that became a key tool for performance reviews, strategic planning, and operational alignment across the organization. ● Designed and validated a standardized CSM Upsell metric, enabling consistent and transparent attribution of upsell contributions. ● Organized internal training and resources to drive adoption of new tools, spreading a data-driven mindset and boosting operational performance.

Sxope — Niche insurance & medical consulting for healthcare organizations. ● Established data quality tests for the top 10 critical medical reports, preventing up to 95% of errors in data and significantly improving data reliability. ● Created a data quality dashboard for real-time insights, building on established tests to enable proactive issue resolution. ● Refined data pre-processing and consumption pipelines, increasing calculation speed by an average of 10%. ● Implemented four data validation pipelines, automating manual checks and saving over 40 hours per month. ● Gathered and customized training datasets for key ML models focused on disease and cost prediction.

Sweatcoin — Global Top 10 health & fitness app turning movement into digital currency. ● Calculated and automated LTV and CAC comparisons by platform, provider, and region, enabling data-driven optimization of a $200K+ marketing budget and improving ROI visibility across acquisition channels. ● Developed a viral growth prediction model with 85% accuracy using store rank, country, and platform data to forecast organic registrations per 100 paid users, supporting strategic marketing decisions. ● Participated in A/B testing and analyzed results to assess feature impact on retention, MAU, and ARPU.

MTS — Leading telecom group in Eastern Europe. ● Developed a tailored product offering system for MTS Bank’s 3 million clients based on interests and scoring, improving application conversion rates by 7%. ● Automated user data collection from four landing pages, eliminating 4 hours of manual effort per week. Stored data in a database for follow-up communication with incomplete applications, increasing revenue by 2%. ● Identified 35,000 clients with high telecom spending and created a dedicated VIP client area.