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Registration: 18.05.2026

Vasily Ovsyannikov

Specialization: Data Analyst
— Data Analyst with experience in e-commerce and IT outsourcing. — Set up ETL processes and BI dashboards for Ozon and Wildberries marketplaces. — Worked as a System Analyst at Aston (Fintech, Retail, Telecom). — Tech stack: SQL (PostgreSQL), Python (Pandas, NumPy), Power BI, Power Query, Excel, Google Sheets. — Currently taking the “Data Analyst” course at Skypro (2025–2026). — Student at National Research Tomsk State University, majoring in Software Engineering (graduating 2027).
Data Analysis Power BI SQL Python Data Visualization ETL Excel PostgreSQL pandas Confluence Jira
— Data Analyst with experience in e-commerce and IT outsourcing. — Set up ETL processes and BI dashboards for Ozon and Wildberries marketplaces. — Worked as a System Analyst at Aston (Fintech, Retail, Telecom). — Tech stack: SQL (PostgreSQL), Python (Pandas, NumPy), Power BI, Power Query, Excel, Google Sheets. — Currently taking the “Data Analyst” course at Skypro (2025–2026). — Student at National Research Tomsk State University, majoring in Software Engineering (graduating 2027).
Data Analysis Power BI SQL Python Data Visualization ETL Excel PostgreSQL pandas Confluence Jira

Skills

SQL (PostgreSQL)
Power BI
Power Query (ETL)
Python (Pandas, NumPy)
Data Visualization
Excel / Google Sheets
Unit economics
Marketing and product metrics
Jupyter Notebook
Mathematical statistics
Seaborn / Matplotlib
Data processing and cleaning

Work experience

Marketplace Analyst / BI Analyst
02.2026 - 03.2026 |E-commerce project (analytics for Ozon and Wildberries sellers)
Power Query, Power BI, Excel, Google Sheets
● Set up ETL processes and scripts in Power Query to automatically pull data from marketplaces. ● Created templates and visualizations in Power BI for reporting. ● Adapted business metric calculation logic to client-specific requirements. ● Automated data aggregation, reducing report preparation time (reconciliation) from 2–3 hours to 30 minutes. ● Provided the client with clear analytics for pricing decisions.
System Analyst
08.2024 - 09.2024 |Aston (IT outsourcing: Fintech, Retail, Telecom)
UML, BPMN, Confluence, Jira
● Gathered and analyzed system requirements, kept project documentation up to date. ● Designed system logic using User Stories and Use Cases. ● Visualized business processes in UML and BPMN notations. ● Facilitated team collaboration and prepared agendas for Product Owner meetings. ● Developed a solution to integrate with legacy code, reducing technical debt by 20%. ● Introduced documentation templates, speeding up requirement approval by 1.5 times.

Educational background

Software Engineering (Bachelor’s Degree)
since 2022 - Till the present day
National Research Tomsk State University (TSU)

Languages

RussianNativeEnglishIntermediate