Vasyl

VASYL KYRYCHUK
DATA ANALYST
Lviv, Ukraine (Remote / Office / Hybrid) | [відкрити контакти](див. вище в блоці «контактна інформація») | Email | Telegram | LinkedIn | GitHub | Tableau

Data Analyst with a strong technical background in IT infrastructure, systems diagnostics, and a Master's-equivalent
degree in Mechanics and Applied Mathematics. Skilled in SQL, Python, and Tableau for data extraction, exploratory data
analysis (EDA), statistical analysis, and business reporting. Experienced in end-to-end analytics projects, including e-
commerce funnel analysis and A/B test validation. Applies a structured, analytical mindset from years of technical problem-
solving to data-driven decision-making.

SKILLS
SQL Advanced Queries, Window Functions, Joins, Aggregations, CTEs
Python Pandas, NumPy, Matplotlib, SciPy, Exploratory Data Analysis (EDA)
Statistics & A/B Hypothesis Testing (Z-test), Sample Ratio Mismatch (SRM), Statistical Significance
BI & Visualization Tableau (incl. Tableau Public), Power BI, Power Query, Excel & Google Sheets (Pivot Tables,
Data Cleaning)
IT Infrastructure System Administration, Network Setup (LAN/Switches), Server Diagnostics, Access Management
Tools Google Colab, Jupyter Notebook, Git, GitHub
Languages English (B1), Ukrainian (Native)

EXPERIENCE
Data Analyst — Independent Projects 2026 – Present
• Extracted, cleaned, and aggregated metrics from relational databases using SQL (JOINs, CTEs, Window Functions)
• Conducted user behavior and funnel analysis in Python (Pandas, NumPy); tracked cohorts, churn, and retention
patterns
• Evaluated A/B experiment results using SciPy: SRM validation, two-sample Z-tests, statistical significance
• Built interactive Tableau dashboards visualizing core business KPIs (AOV, Retention, LTV)
IT Infrastructure & Systems Specialist — Self-employed 2013 – 2025
• Managed system administration, access control, and network configuration (LAN/switches) for a wide range of clients —
from small businesses and retail stores to government institutions
• Diagnosed and resolved hardware, OS, and network infrastructure issues through structured root-cause troubleshooting
• Installed and configured video surveillance (CCTV) systems and related monitoring software

PORTFOLIO PROJECTS
E-commerce Data Analysis
• Conducted end-to-end analysis using SQL (BigQuery), Python (Pandas), and Tableau to evaluate platform performance
• Processed transactional data to calculate core business metrics (Revenue, Conversion Rate, AOV) across traffic
channels and user devices
• Built an interactive Tableau dashboard with drill-down filters to highlight funnel drop-offs and behavioral trends
GitHub: Ecommerce-Data-Analysis

A/B Testing & Statistical Analysis
• Executed statistical evaluation of an A/B experiment using Python (SciPy) to assess a product/UX change
• Validated data integrity and ran Sample Ratio Mismatch (SRM) checks to confirm proper group distribution
• Performed two-sample Z-tests, interpreted statistical significance, and visualized outcomes in Tableau
GitHub: A-B-Test-Analysis

EDUCATION ACHIEVEMENTS
Master's Degree, Mechanics & Applied Mathematics • Self-driven learning: built and published multiple end-to-
Faculty of Mechanics and Mathematics end analytics projects independently, from data sourcing
Ivan Franko National University of Lviv to dashboard delivery.
Additional Education • Outside of work: completed a 13 km open-water
Mate Academy — Data Analytics Course marathon swim and the Krayna Uzhhorod 10 km charity
Harvard University — CS50: Introduction to CS run.