Maryna

Maryna Kolisnichenko
[open contact info](look above in the "contact info" section) - [open contact info](look above in the "contact info" section) - Vyshneve, Kyiv, Ukraine. -
[open contact info](look above in the "contact info" section) - @Maryna_Kolis
Junior Marketing Analyst

SUMMARY
Junior Marketing Analyst with experience analyzing sales, customer behavior, and seasonal demand trends in an e-commerce environment.
Skilled in SQL, Power BI, Tableau, and Excel for evaluating campaign performance and customer engagement.
Experienced in revenue analysis, conversion trends, and performance monitoring to support marketing decisions. Applied data analysis
techniques to identify high-performing product categories and optimize promotional strategies.
Strong analytical thinking and ability to translate customer behavior into actionable insights.

HARD SKILLS
SQL, Data Analysis, Data Visualization, Conversion Rate Analysis, KPI Tracking, Reporting, Trend Analysis, Sales Analysis, Revenue
Analysis, A/B Testing, Funnel Analysis

TOOLS
Power BI, Tableau, Looker Studio, PostgreSQL, Excel, Google Sheets, BigQuery

WORK EXPERIENCE
Buyer | Marketing & Customer Data Analysis
Self-employed | 2010 – Present
Analyzed customer purchase behavior and seasonal demand trends to support promotional strategy.
Evaluated product performance and customer response to marketing content using sales data.
Identified high-performing product categories through order and revenue analysis.
Created analytical reports to support marketing and operational decisions.
Designed promotional content (static and animated banners in Canva) and managed social media updates.
Key Achievements
Automated order tracking system in Google Sheets, improving reporting efficiency.
Built and maintained a loyal client base of returning customers through data-informed decision-making.
Delivered regular analytical reports based on order and customer data.

PROJECT EXPERIENCE
User Activity & Revenue Dashboard | Power BI
Tools: Power BI, DAX, Power Query
https://github.com/marusa07201/powerbi-user-activity-dashboard
Analyzed user engagement and revenue trends to evaluate product performance.
Created KPI measures to monitor customer activity and conversion patterns.
Supported marketing decisions through interactive dashboard insights.
Superstore Sales Dashboard | Tableau
Tools: Tableau, Google Sheets, Excel
https://public.tableau.com/app/profile/maryna.kolisnichenko6018/viz/Project_2_17604718051330/Dashboard1
Evaluated sales performance across customer segments and product categories.
Identified high-performing categories to support promotional planning.
Visualized business metrics for marketing reporting.
Revenue Analysis Project | SQL
Tools: PostgreSQL, SQL
https://github.com/marusa07201/sql-revenue-analysis
Analyzed revenue trends and refund rates to evaluate product performance.
Calculated customer contribution using SQL window functions.
Generated monthly revenue trends to support campaign planning.

EDUCATION
IT School “GoIT” – Data Analysis (2025)
Kyiv National Economic University named after Vadym Hetman – Bachelor’s degree, Accounting and Auditing (2003–2011, with academic
leave for maternity)

LANGUAGES
English – Intermediate (B1)
Ukrainian - Native