Ірина

IRYNA KOSTENKO
JUNIOR DATA/WEB/PRODUCT ANALYST
Contact Information
PROFILE
I have strong analytical and critical thinking, along with attention to detail,
[открыть контакты](см. выше в блоке «контактная информация») (telegram) responsibility, and a structured approach to problem-solving. I’m now focused on
[открыть контакты](см. выше в блоке «контактная информация») transitioning into data analytics, where I use tools like SQL, visualization and Google
Sheets to work with data and generate insights. I enjoy solving problems, exploring
[открыть контакты](см. выше в блоке «контактная информация»)
data, and continuously improving my analytical skills through practice and learning.
Jozefosław, Poland
EDUCATION
[открыть контакты](см. выше в блоке «контактная информация»)
Master Consulting and international business sep 2016 - feb 2018
/iryna-kostenko-08739a178/
degree Kharkiv National University of Economics, Kharkiv
Bachelor Accounting and auditing sep 2012 - june 2016
degree Kharkiv National University o f Economics, Kharkiv
TECH SKILLS
COURSES
Google Sheets, Excel Dec 2025 - June 2026
"IT School GoIT"- "Data Analyst"
SQL (GROUP BY, JOIN, agnation, The course includes: Google sheets, SQL, GA4+BigQuery, Tableau,
Window functions) product analysis, statistics, Python, Pandas, NumPy, Power Bl and more.

product metrics, statistics
(conversion, ARPU, LTV, WORK EXPERIENCE
retention, churn and more) English teacher
Anti-school Apr 2025 - Jan 2026
GA4 (Google Analytics 4)
BigQuery Teaching English for children and teenagers, creating interactive classroom
materials.
Data Cleaning & Validation
Distribution operator
Data Visualization (Power BI,
Dec 2019 - Feb 2021
Dnipro-M, Kyiv
Tableau)
A/B Testing Worked with primary documents ni Excel and Google Sheets; processed daily
documentation.
Python (Pandas, NumPy) Used Excel for basic data entry, tables, calculations, including formulas and pivot
CSS, HTML, Git tables.
Prepared sales reports ni 1C.Processed customer orders, issued invoices, and
1C, SAP handled product returns in 1C.
Provided information to clients and monitored accounts receivable.Prepared and
checked reports to ensure data accuracy.
SOFT SKILLS Financial Specialist
ABInbevEfes Jun 2018 - Aug 2018
open-mindedness
responsibility, honesty Identified and analyzed discrepancies in accounts receivable data, investigated
root causes, and prepared structured reports.
ability work both in a team and Managed accounts receivable data: colected, processed, and prepared data for
independently further use.
analytical and critical thinking Worked with clients ot explain accounting reports, clarified data inconsistencies,
and supported actionsot improve data quality.
communication skils
Worked with primary documentation and transformed raw data into data ready for
ability ot analyze analysis and reporting.
self development

I consent to the processing of my personal data for recruitment purposes in accordance with
Regulation (EU) 2016/679 (GDPR).
LANGUAGES Accounting Assistant / Sales Manager
Bloomynails, Kharkiv Aug 2016 - Mar 2018

English - Upper-Intermediate Worked with Excel and 1C, primary documentation created and
Polish - Upper-Intermediate updated databases.
Ukrainian - Fluent Searched for new customers and worked with dropshipping.
Maintained documentation and sold products on different platforms.
Updated the website with product information.
Communicated with clients and provided basic support.

I consent to the processing of my personal data for recruitment purposes in accordance with
Regulation (EU) 2016/679 (GDPR).