Ірина

IRYNA OMELCHENKO
Junior Data Analyst
SUMMARY
Aspiring Data Analyst with a strong accounting background and hands-on experience in financial analysis,
reporting, and working with large datasets. Currently developing skills in SQL, Excel, Power BI, and data
visualization to transition into the data analytics field. Passionate about transforming data into actionable
insights and helping businesses make data-driven decisions. Analytical mindset, attention to detail, and
continuous learning are at the core of my professional growth.

CONTACTS PROJECT EXPERIENCE
[open contact info](look above in the "contact info" section) Cohort Retention Analysis
[open contact info](look above in the "contact info" section) Tools: SQL, Google Sheets
Linkedin Telegram Description: Evaluation of user retention (Retention Rate) based on cohort
analysis.
Kharkiv, Ukraine
My tasks: Data processing and visualization. Analysis of user retention
HARD SKILLS (Retention Rate) for different sources of engagement.
SQL Result: Comparison of behavior of two groups of users, conclusions on
Python Acquisition Quality and Retention are provided.
Google Sheets Exploratory Data Analysis
Mathematical Statistic Tools: Python (Pandas, Numpy)
A/B Tests Description: Data cleaning, transformation and quality control, application
Product Analysis of statistical methods to study distributions and key indicators.
Business Metrics My tasks: Filtering, aggregating and grouping data, calculating metrics
Data Visualization (mean, median, percentiles). Working with sets and complex selection
conditions.
Data Storytelling
Result: Clean and structured data was obtained, suitable for further
Data Cleaning & Validation
analysis and visualization. Patterns were identified in the data to support
TOOLS decision-making.
Amplitude
Tableau, Looker Studio, Power BI WORK EXPERIENCE
Pandas, NumPy, Matplotlib, Accountant
LLC Marshalit
Seaborn
Oct 2021 - Present
Jupyter Notebook
Managed payroll and employee records
BigQuery
Prepared and organized financial documents and registers
DBeaver
Worked with ERP systems.
Google Sheets, Excel
Chief accountant
SOFT SKILLS Ukrainian Railway
Problem-Solving and critical thinking Feb 2010 - Oct 2021
Accurate
Organization and coordination of the work of the accounting department
Excellent communication and
(4 employees).
collaboration skills Setting tasks and monitoring their implementation within the established

EDUCATION deadlines.
Ensuring timely preparation and submission of financial and tax reporting.
IT School “GoIT”
Structuring accounting processes to increase work efficiency.
Data Analysis
2026
Achievements: Established a planning and control system, optimized the
department's workflows, which reduced the time for preparing reports by
Ukrainian State University of
15%.
Railway Transport
Accounting and Auditing
2009 - 2011 LANGUAGES
Simon Kuznets Kharkiv National English - Intermediate
University of Economics Ukrainian - Native
Computer Systems Analysis/Analyst
2000 - 2004