Ольга

Olha Zayats
Data Analyst

Junior Data Analyst with practical experience in SQL, Python (Pandas, NumPy),
Excel, Google Sheets, Tableau, and A/B testing. Completed analysis of revenue
and user metrics, advertising campaign performance, user behavior in gaming
datasets, as well as conversion and activation metrics. Experienced in data
CONTACTS cleaning, preprocessing, transformation, and uncovering insights through
visualization and statistical testing. Holding a degree in economics and finance,
[відкрити контакти](див. вище в блоці «контактна інформація») combined with international work experience and strong communication skills.
Detail-oriented, analytical, and fast-learning professional eager to generate
[відкрити контакти](див. вище в блоці «контактна інформація»)
valuable insights and support decision-making.
Telegram
LinkedIn PROJECT EXPERIENCE
Lviv, Ukraine Revenue & User Dynamics
Tools: SQL (PostgreSQL), Tableau
Description: Built a dashboard to analyze revenue and user dynamics by
HARD SKILLS calculating and visualizing key metrics such as MRR, ARPPU, Churn Rate, LT, and
LTV. The project aimed to identify both growth drivers and negative factors
Data Cleaning & Preprocessing affecting revenue.
Data Analysis & Visualization My tasks: Processed and structured raw data in SQL, developed queries for core
metrics, and created interactive Tableau dashboards with filtering by age,
Product Analysis language, and game.
SQL Result: Provided actionable insights into revenue trends and user retention,
helping to highlight expansion opportunities and churn risks.
Python
A/B Testing
WORK EXPERIENCE
TOOLS American Logistic Company
HR Manager | Nov 2023 – Nov 2024
Pandas
Led recruitment and onboarding using multiple platforms (LinkedIn, Indeed,
NumPy
etc)
Tableau Collected and analyzed candidate data to optimize hiring decisions
Google Sheets Developed job descriptions and improved HR processes for efficiency
Ensured compliance with labor laws and industry standards
Excel
PostgreSQL (Jupyter Notebook) Emirates, UAE
Amplitude Cabin Crew | Sep 2019 – Apr 2023
Power BI Ensured passenger safety and delivered service at international standards
Monitored and reported service quality to maintain consistency
Looker Studio
Resolved customer issues through communication and problem-solving
Google Analytics Worked in multicultural teams, developing adaptability and collaboration
BigQuery skills

St. Regis Hotel, Qatar
SOFT SKILLS Restaurant Supervisor | Hostess | Apr 2017 – Apr 2019
Logical Mindset & Analytical Thinking Managed daily restaurant operations, reservations, and guest services
Supervised and trained staff to ensure high-quality service standards
Attention to Detail
Handled customer requests and resolved issues in a professional manner
Communication & Collaboration Monitored inventory and optimized workflows to improve efficiency

Adaptability & Fast Learning
Time Management EDUCATION
IT School ‘GoIT’ Lviv Banking University
LANGUAGES 2025 2013 - 2020

English - Upper-Intermediate Data Analyst Master’s degree in Finance, banking and insurance
Ukrainian - Native