Анастасія

SUMMARY
Data Analyst with a background in System Analysis (KNU). I specialize in SQL,
Python, and Tableau, having solved 300+ practical tasks focusing on statistics,
A/B testing, and data visualization. My approach combines technical precision
with a proactive mindset developed through "Plast" and continuous self-education.
I leverage my analytical foundation to translate complex data into actionable
insights and high-quality code to drive product growth.

ANASTASIIA
EXPERIENCE
KIRCHENKO
Data Analyst | Mar 2025 - Present
DATA ANALYST End-to-End Analytics: Developed 4 automated analytical pipelines using
SQL and BigQuery, reducing data processing time by 20% while ensuring
CONTACTS high data integrity.
Statistical A/B Testing: Designed and executed A/B tests to validate
Kyiv, Ukraine product improvements; calculated Z-test and Power for a sample of 10,000+
[open contact info](look above in the "contact info" section) users, identifying a statistically significant conversion lift of 5%.
[open contact info](look above in the "contact info" section) Advanced Data Visualization: Built 3 interactive Tableau dashboards for
sales tracking, consolidating 12+ data sources into a single executive-level
Telegram: knrch
view using LOD expressions.
LinkedIn: anastasiia-kirchenko
User Behavior Analysis: Analyzed activity dynamics for a dataset of
GitHub: krchnst
50,000+ records in Python (Pandas, SciPy), identifying 3 key user
Tableau Public: anastasia.kirchenko segments with high churn risk.
SKILLS Business Insights: Translated complex findings into actionable insights,
providing 5+ strategic recommendations for customer engagement and
SQL: Advanced Queries, Window Functions, Query marketing optimization.
Optimization, CTEs, BigQuery. Data Optimization: Optimized complex SQL queries (CTEs, Window
Python: Pandas, NumPy, Matplotlib, Seaborn, SciPy Functions), improving query execution speed by 30% for large-scale
(Statistics), EDA. datasets.
Data Visualization: Tableau (Interactive
Dashboards, LOD, Parameters), Power BI (DAX,
Power Query), Data Storytelling.
Statistics & Math: Probability Theory, Hypothesis PORTFOLIO
Testing, Statistical Significance, Power.
Programming & Tools: C++, UML, ER & RSD
User Email Analytics | SQL, Python
Diagrams, Git, Jupyter Notebooks.
Business Analysis: Business Requirements, Excel Analyzed user activity dynamics (sends, opens, clicks) using SQL and
(Pivot Tables), Unit Economics. Python.
Language: English (Intermediate). Built segmentation models to provide data-backed recommendations for
engagement.
EDUCATION
User Behavior Analytics | SQL, Python, Tableau
Taras Shevchenko National University of Kyiv Executed data retrieval with SQL and time series analysis in Python to
Bachelor in System Analysis, Kyiv, Ukraine address business inquiries.
2024-2028 Designed an interactive Tableau dashboard for management reporting on
sales trends.
ADDITIONAL EDUCATION
Global Sales Analysis | Python
Genesis IT School Conducted Exploratory Data Analysis (EDA) to evaluate sales performance
(2026) (Product Growth, Business Strategy & and logistics efficiency.
Decision Framework) Identified key profitability drivers and regional trends through data cleaning
Data Analyst Course at Mate Academy and visualization.

(2025) (SQL, Python, Business Analytics, Tableau) Ecommerce A/B Test Pipeline | SQL, Python

SKELAR IT Analytics Intensive Developed an end-to-end A/B testing pipeline using SQL (BigQuery) and
Python.
(2025) (Product & Marketing Metrics, A/B Testing,
Calculated statistical significance (Z-test) to validate conversion
Unit Economics)
improvements.
Aspen Teens: Fight for UA Dream Seminar
(2024) (Leadership, Critical Thinking, Social
Responsibility)
ACHIEVEMENTS
Junior Computer Academy at ITStep
(2018 – 2019) (Python Basics, Logic, Problem Winner in Nuclear Physics Competitions (1st - 2023, 2nd - 2024).
Solving) 300+ Practical Tasks Solved.