- Product experimentation — A/B test design, sample-size planning, guardrail metrics, reproducible reporting. CUPED, AA-tests, Bonferroni, Bayesian A/B.
- User lifecycle analytics — cohort retention, funnel analysis, RFM segmentation.
- End-to-end delivery — SQL → Python → dashboard → stakeholder narrative.
📦 Portfolio: 
🔗 Links: 
📄 Download CV: 
- 📚 Learning: Bayesian A/B testing, ClickHouse, dbt, Apache Airflow, Apache Superset
- 💼 Open to: BI / product / data analyst roles — actively interviewing
- 🤝 Collab: experimentation, user retention analytics
- 🚧 Building: interactive analyst portfolio — playable SVG games + self-hosted GitHub stats
Sources: volta-banking · causal-uplift · ab_test · sql-analytics-case-study · airflow — every link is HTTP-checked in CI.
Last refreshed: 2026-10-02 17:48 UTC · 162 contributions in the last 7 days
End-to-end neobank analytics: funnel, A/B test, retention, segmentation. +5.72pp KYC conversion — statistics and methodology live in the evidence ledger above and the case study.
Stack: Python · SciPy · Statsmodels · scikit-learn
Full-stack analytics platform: Streamlit + Supabase with RLS and an Edge Function. Significant A/B result (p=0.0034) on 8,000 seeded users, reproducible pipeline.
Stack: Python · Streamlit · Supabase · PostgreSQL
Twenty-five end-to-end SQL cases on DuckDB — funnel, N-day retention, DAU/MAU stickiness, LTV, streaks, A/B conversion, attribution — plus one case on real UCI Online Retail II data. One command, no server, pytest-verified.
Stack: SQL · DuckDB · pytest
🐍 Snake
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🧪 A/B Test
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🏓 Pong
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🔢 2048
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🔻 Funnel Drop
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📊 Cohort Catch
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🧩 SQL Query
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🃏 Metric Match
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Click a card to play the game full screen — opens in a new tab.
| Game | Controls | Goal |
|---|---|---|
| 🐍 Snake | Arrows / WASD · R to restart | Eat food, grow longer, don't hit walls or yourself |
| 🧪 A/B Test | Click anywhere (or Space / Enter) | Collect data until the p-value drops below 0.05 |
| 🏓 Pong | W/S or ↑/↓ — or move the mouse · R to restart | Beat the CPU — first to 11 |
| 🔢 2048 | Arrows / WASD · R to restart | Slide and merge tiles to reach 2048 |
| 🔻 Funnel Drop | ←/→ or move the mouse | Catch falling users to convert them |
| 📊 Cohort Catch | ←/→ or move the mouse | Catch Returning users (green), avoid Churned (grey) |
| 🧩 SQL Query | Click an option (or keys 1-4) | Pick the token that fills the SQL blank |
| 🃏 Metric Match | Click two cards | Match each metric to its formula |
- Кейсы с собеседований: как диагностировать просадку метрики
- Проактивность аналитика за рамками роли
- Churn + uplift: кому дать скидку (причинный таргетинг)
- EDA-шаблон с кодом: разведочный анализ по-продуктовому
- Feature Impact: как измерить влияние фичи, когда A/B невозможен
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