Валерія

VALERIIA TSENTYLO
Data Analyst
Kyiv, Ukraine
[відкрити контакти](див. вище в блоці «контактна інформація») | tg: @SkarletMyst

Data Analyst with hands-on experience in Excel and Google Sheets,
focused on data cleaning, validation, analysis and reporting. Skilled in SQL,
Python, BigQuery and Power BI, with additional experience in web scraping,
data processing and data quality assurance. Strong technical background in
QA and Python development, with a focus on turning raw data into clear,
structured insights and supporting data-driven decision-making.

WORK EXPERIENCE
Data Analyst Nov 2025 - Present

TOV “Kolos”
SKILLS Responsibilities:
Data Analysis & Reporting
Excel, Google Sheets, Pivot Tables, Analyze and process business data using Excel and Google Sheets
VLOOKUP, XLOOKUP, INDEX/MATCH, data Clean, validate and transform datasets to ensure data accuracy and
cleaning, data validation, reporting, KPI
consistency
analysis
Create and maintain analytical reports and dashboards
SQL & Databases Use Pivot Tables, VLOOKUP, XLOOKUP and other Excel functions for data
SQL, PostgreSQL, MySQL, Microsoft SQL
analysis
Server, BigQuery
Analyze trends, identify inconsistencies and provide actionable insights
Programming
Python (Pandas, NumPy) Python Developer Feb 2024 - Jan 2025
Avada Media, Intership
Data Visualization & BI
Responsibilities:
Power BI, Tableau, Google Charts, Excel
Charts Developed backend features for web applications using Python and
Django
Data Analytics
Worked with relational databases (PostgreSQL, MySQL) for data storage,
Data cleaning & transformation, exploratory
data analysis, data quality, data validation, queries, and data management
reporting, trend analysis Implemented data visualization components using Google Charts

Tools & Technologies Python Developer Feb 2023 - Jul 2023
Git, GitHub, Jupyter Notebook, ChatGPT,
GitHub Copilot, Cursor, Claude Freelance
Responsibilities:
COURSES Developed a Python-based automation system for data collection and
Google Data Analytics Professional Certificate processing.
— Google
Implemented web scraping and Telegram bot integrations.
Data Quality Assurance, EPAM
Automated data validation, reporting and workflow management.
EDUCATION QA Engineer Oct 2021 - Jan 2023
National Aviation University Komanda
Micro- and Nanoelectronics Responsibilities:
Bachelor’s Degree | 2014–2018 Performed manual testing of web applications
Erasmus+ Programme, Economics Created and maintained testing documentation: test plans, test cases, and
Feb, 2019 - Jul, 2019 checklists
National University of Life and Environmental Reported and documented defects with detailed bug reports and
Sciences of Ukraine reproduction steps
MBA Collaborated with the development team to ensure product quality and
Master’s Degree | 2018–2019 issue resolution

LANGUAGES
Ukrainian - Native
English - Intermediant