Ольга

Why me?
I combine a strong scientific foundation with a practical
set of data analysis tools. My experience has instilled in
me a deep respect for data objectivity, critical thinking,
and meticulous attention to detail. As a scientist, I am
skilled in drawing informed conclusions, formulating
viable hypotheses, and delivering high-quality, accessible
reporting. My background as a mentor has further
refined my communication skills and the ability to
Olha Yakimova translate complex data into clear, meaningful narratives.
Data Analyst I am deeply driven by social responsibility and believe in
building impact based on mutual respect, rationality,
Contacts and human values.
Location: Kyiv, Ukraine
[открыть контакты](см. выше в блоке «контактная информация») (Viber, Telegram)
Skills/Technologies
Email: [открыть контакты](см. выше в блоке «контактная информация») SQL: MySQL, Complex Queries (JOINs, CTEs,
Sub-queries, Window Functions, Aggregations), DB
Design
Languages Excel: Advanced Formulas
English – B2 Ukrainian - C2 (VLOOKUP/XLOOKUP), Pivot Tables, Power
Query, Interactive Dashboards
Portfolio Power BI: DAX, Power Query, Data Modeling,
Power BI RLS, Interactive Reporting
Ad Spend to Revenue Analysis – key marketing Python: Pandas, NumPy, Scikit-learn, Matplotlib,
analytics. Built a dashboard to track advertising Seaborn; EDA, Machine Learning (ML)
efficiency. Developed complex DAX measures
for ROI, ROAS, and CPC. 🔗 View Project Work Experience
Hospital Patient Experience Analysis - visualized PhD Student, Engineer | M.G. Kholodny Institute of
healthcare data using Star Schema and
🔗
Botany, NAS of Ukraine
implemented Row-Level Security (RLS). Planning, conducting, and analyzing experiments,
View Project processing large volumes of scientific data, and
systematic reporting.
Python Mentor | Educational Program "IT NATION" (with
Customer Churn Analysis - full-cycle DS project: the assistance of the USAID)
conducted in-depth EDA and built a churn Guided participants through the curriculum,
prediction model using Scikit-learn and Pandas. provided feedback on projects.
🔗 View Project Sales Manager, Head of Regional Department |
IKEA Product & Price Analysis - performed SenaoPro
statistical analysis and data cleaning on 3,700+ Responsibilities included client communication,
products. 🔗 View Project managing customer and product databases,
conducting negotiations, and competitor analysis.
SQL & Excel
SQL - designed relational schemas and wrote
Education
Data Analyst at DAN.IT Education View
optimized queries using CTEs and Window
🔗
Functions. View Project
Advanced Frontend developer at " IT Nation"
(USAID "Economic support for Eastern Ukraine")
Excel - automated reporting via Pivot Tables
PhD student at Kholodny Institute of botany, NAS of
and advanced formulas to reduce manual
🔗
work. View Project
Ukraine
Master in Biochemistry at National University of
"Kyiv-Mohyla Academy", Diploma with honour