Оксана

Brazhnikova Oksana
DATA ANALYST
Data Analyst with experience in data analysis, reporting, and statistical
research. Skilled in SQL, Tableau, Google Looker Studio, Excel, and
Google Sheets, with hands-on experience using Python (pandas), Google
Analytics 4 (GA4), Amplitude, and A/B testing as part of academic
projects. Proficient in building analytical dashboards and extracting
actionable insights from data to support data-driven decision-making.

PROJECT EXPERIENCE
E-commerce Funnel & Conversion Dashboard | GoIT (Final
Project) | View project
●​ Tools: SQL (BigQuery), Tableau Public
CONTACTS ●​ Description: Developed an analytical dashboard to analyze
[open contact info](look above in the "contact info" section) conversion performance of an e-commerce store for marketing
[open contact info](look above in the "contact info" section) managers.
Telegram ●​ Idea: Provide visibility into the customer journey and conversion
Linkedin funnel across key stages.
Kharkiv, Ukraine ●​ Tasks:
●​ Wrote SQL queries in BigQuery to extract, clean, and aggregate
HARD SKILLS data
- SQL (JOINs, CTEs, window functions, ●​ Calculated funnel and conversion metrics
aggregations) ●​ Built an interactive Tableau dashboard
- Data Analysis & KPI Calculation ●​ Reviewed results and summarized key observations
- Marketing Analytics (CPC, CPM, CTR, Result: Created a clear conversion funnel visualization that supports
ROMI) analysis of user flow and conversion performance.​
- Product Analytics (funnels, retention, Prepared a short video presentation demonstrating the dashboard
cohort analysis) structure and functionality.
- Data Visualization & Dashboard Design
- Spreadsheet Analysis (formulas, pivot Marketing Campaign Analysis with SQL | View project
tables, forecasting) ●​ Tools: SQL (PostgreSQL, BigQuery), DBeaver
- Basic Python for Data Analysis ●​ Built queries for data extraction, aggregation, and KPI calculations
- A/B Testing (hypothesis formulation, (CPC, CPM, CTR, ROMI)
metric selection, result interpretation) Result: Identified top-performing campaigns and prepared clean datasets
for dashboard visualization.
TOOLS ​
- PostgreSQL Revenue and Product Analysis | View project
- BigQuery ●​ Tools: Tableau
- DBeaver ●​ Conducted revenue analysis across products and locations
- Tableau Public ●​ Created calculated fields (Revenue, Paid Users, ARPPU) and built
- Google Looker Studio comparative and monthly visualizations
- Google Sheets Result: Delivered interactive dashboards to support data-driven
- Excel decision-making.
- Python (pandas, basic analysis) ​
- Google Analytics 4 (GA4) User Behavior and Conversion Funnel | View project
- Amplitude ●​ Tools: Tableau
●​ Built dashboards to analyze user journey and conversion
SOFT SKILLS funnel.Defined KPIs and created funnel and trend visualizations
- Attention to detail - validated datasets Result: Provided clear visibility into user lifecycle and conversion
and identified inconsistencies before performance.
building dashboards.​
- Team collaboration - worked with WORK EXPERIENCE
mentors and peers on analytics projects, Self-employed Fashion Designer & Seamstress | 2013 – Present
discussing findings and improvements.​ ●​ Conducted market analysis by tracking customer demand and tailoring
- Responsibility - independently managed collections to business needs
multiple projects and met all deadlines.​ ●​ Managed financial records, prepared reports, and optimized resource
- Outcome orientation - focused on allocation
delivering clear insights and actionable ●​ Applied Excel and Google Sheets for budgeting, performance tracking,
and workflow optimization
results for decision-making.​
Northeastern Office of the State Audit Service (formerly KRU in
LANGUAGES
Ukrainian — Native Kharkiv region)​
Russian — Fluent​ Chief Controller-Inspector (Analyst) | 2000 – 2012
English — Beginner ●​ Conducted analysis of audit reports and financial documentation
●​ Prepared analytical reports and analyzed financial and statistical
indicators
●​ Provided data-driven insights for decision-making and presented
findings to management

EDUCATION
IT School GoIT
Data Analytics | 2025

Kuznets Kharkiv National University of Economics
Bachelor’s Degree in Accounting and Auditing | 2000-2005
Specialist Degree in Accounting and Audit Specialist | 2005-2006