Andrii

ANDRII BELCHYK
DATA ANALYST

[open contact info](look above in the "contact info" section) aakumake

[open contact info](look above in the "contact info" section) Andrii Belchik

EXPERIENCE
EDUCATION
Data Analyst - appflame
Bachelor of Computer Science 2021-2025 March 2025 - Now
IASA Conducted incremental tests to evaluate
Igor Sikorsky Kyiv Polytechnic Institute
performance improvements.
During studies, I was in the top 25 in the Developed automated rules for creative
scholarship ranking. I participated in writing optimization and hourly reporting.
projects on the following topics: ‘Assessment
Led an R&D project, covering marketing, product,
of the level of economic security of the world's
countries’, “Application of the annealing and operational analytics.
simulation algorithm for the salesman's Analyzed creative performance and effectiveness.
problem”, “Problem of distribution of the Built dashboards in Tableau and Metabase.
production programme between enterprises”.
Worked with ClickHouse, Airflow, and Python for
All projects received an A grade.
data processing and automation.

Data Analyst - Cobit Solution
SKILLS
September 2024 - March 2025
R, Python
Connected to GA4 API for dynamic report retrieval,
Pandas, Numpy, Matplotlib, Seaborn,
processed OLAP data with filters and aggregations,
Scikit-learn
and exported results to MS SQL.
Git, Airflow
Developed Power BI dashboards for production
PostgreSQL, SQL, MySQL, Clickhouse
analysis using SQL, Excel, Bitrix, and Google
Power BI, Tableau, Metabase
Sheets.
Mathematical statistics, theory of
probability, mathematic analysis and
Data Analyst - PwC Lviv SDC
linear algebra
September 2023 - September 2024

Processed client data from CEE companies using
Alteryx and Excel.
Fixed data issues via SQL and ensured accurate
Halo platform visualizations.
Managed 5–7 weekly data requests, meeting
deadlines and client needs.