Олена

OLENA REZHEVSKA
Data Analyst
Kharkiv, Ukraine | Phone: [открыть контакты](см. выше в блоке «контактная информация»)| Email: [открыть контакты](см. выше в блоке «контактная информация») | LinkedIn: http://[открыть контакты](см. выше в блоке «контактная информация»)| Telegram: https://t.me/rezhevskaya
SUMMARY
Junior Data Analyst with analytical mindset and hands-on experience in data analysis and visualization. Worked with SQL for data querying and aggregation, and used Google Sheets and Tableau to analyze datasets and build clear dashboards. Performed exploratory data analysis (EDA) to identify trends and calculate key metrics such as conversion rates. Familiar with basic statistics, Python (Pandas), and A/B testing. Seeking an entry-level position to develop analytical skills and support data-driven decision-making
HARD SKILLS: SQL, Python, Basic statistical analysis, Data cleaning and preprocessing, Business metrics, Data Visualization, Data Storytelling, Working with structured datasets

TOOLS: Google Sheets, Excel, Tableau, Google Analytics , BigQuery , Pandas, NumPy, Matplotlib, Seaborn, Jupyter Notebook

SOFT SKILLS: Analytical thinking, Attention to detail, Clear communication of insights, Ability to learn quickly

Languages: English - Pre-Intermediate, Ukrainian - Native
PROJECT EXPERIENCE
E-commerce Sales and Customer Behavior Analysis
Tools: Google Sheets, Tableau
Description: Built a dashboard to analyze e-commerce sales and customer behavior, identifying key patterns across countries, devices, and product categories.
My tasks: Data cleaning and preparation, Exploratory data analysis, Sales and customer behavior, analysis, Data visualization in Tableau
Result:
Identified key sales trends across markets and devices, Presented insights through an interactive dashboard
Stack Overflow Developer Survey Analysis
Tools: Python (Pandas, NumPy), Jupyter Notebook, GitHub
Description: Explored the Stack Overflow Developer Survey dataset to understand trends in developer demographics, programming language usage, and salary distribution.
My tasks: Data preprocessing and dataset preparation, Exploratory data analysis using Pandas, Aggregation and comparison of survey responses, Analysis of developer experience and compensation data
Result:
Revealed patterns in developer experience levels and salary ranges, Summarized insights from a large public dataset
WORK EXPERIENCE

Nertus Agro LLC
Specialist in Agriculture Crops Breeding and Genetics
February 2021 – Present
Develop new sunflower hybrid lines, applying principles of genetics and breeding.
Analyze experimental data to identify high-performing traits and support hybrid selection.
Maintain and process datasets of plant traits to ensure accuracy in breeding decisions.
Collaborate with cross-functional teams to streamline breeding experiments and data collection.
Achievements:
Conducted data analyses to evaluate hybrid performance and inform breeding strategies.
Organized and structured large datasets to improve accessibility and usability for the team.
Contributed insights from experimental results to optimize breeding workflows.

EDUCATION
GoIT - start your career in IT
Data Analysis 2025
V.V. Dokuchaev Kharkiv National Agrarian University – Master's degree in Agrochemistry
2009 – 2015