Христина

Khrystyna Lozenko
Data Analyst

About Me
Aspiring Data Analyst passionate about uncovering insights that
support impactful, business-driven decisions. Enthusiastic about
continuous learning and applying new knowledge to real-world
challenges. Skilled in data analysis, visualization, and
interpretation, with a strong desire to turn complex data into
clear, actionable strategies that drive results.

Project experience
Customer retention assessment
Created an interactive cohort analysis dashboard in Google
Sheets to track user retention by first activity month. Used pivot
tables, slicers, dynamic formulas, and conditional formatting to
Contacts calculate and visualize retention rates.
[відкрити контакти](див. вище в блоці «контактна інформація»)
SQL-Based Ad Campaign Insights
[відкрити контакти](див. вище в блоці «контактна інформація») Wrote advanced SQL queries to extract and clean cross-channel
advertising data. Applied window functions and aggregation to
Telegram
calculate key marketing metrics, including cost efficiency,
Linkedin engagement rates, and conversion-based ROI, and to analyze
trends over time by campaign.
Odesa, Ukraine
Analysis of user behavior
Developed interactive dashboards in Tableau, gaining hands-on
Hard skills experience with advanced visualization techniques, dynamic
SQL filtering, and custom chart configurations to deliver clear, data-
Python driven insights.
Advertasing companies analysis
Work experience
Gathering of the Requirements
Theory of Probability and Mathematical Pivdenny Bank
Analyst, Economic Support Department, 2024 - till now.
Statistic
Responsible for analyzing the operational performance and
A/B Tests
cost structure of departments within the operations vertical.
Product Analysis Delivered insights on expense optimization and presented
results of a motivation program aimed at driving cost
Tools efficiency.

Excel Pivdenny Bank
Google Sheets Еconomist, Payroll project support department, 2014 - 2023.
Provided client support, primarily working with accountants to
Amplitude
ensure smooth communication and service delivery.
MS Power BI
Processed incoming payments and handled a variety of
Pandas financial and operational documents.
A/B Tests Delivered consultations and end-to-end support across key
Tableau client operations.

Soft skills Education
Customer focus IT School "GoIT"
Attention to detail Data Analysis, 2025
Flexibility School "DATABI"
Stress resistance SQL for business analysis, November 2021-January 2023
Lifelong Learning
School "DATABI"
EXCEL: Business analysis and forecasting, June-December 2021
Languages Оdesa institute of finance of the Ukrainian state university of
English - intermediate finance and international trade
Ukrainian - native Bachelor of Finance and Credit, 2008-2014