Oleksandr

OLEKSANDR KOROBKO
JUNIOR DATA ANALYST

PROFILE
Detail-oriented Junior Data Analyst with a solid foundation in data extraction,
processing, and visualization, backed by a strong background in IT infrastructure
and systems administration. Proficient in writing SQL queries, building data
CONTACT pipelines in Python, and translating complex datasets into actionable business
insights via interactive dashboards. Quick learner with excellent troubleshooting
[відкрити контакти](див. вище в блоці «контактна інформація») skills, looking to leverage technical expertise to support and drive data-driven
decision-making within the company.
[відкрити контакти](див. вище в блоці «контактна інформація»)
05-500, Poland, Piaseczno WORK EXPERIENCE
EDUCATION Piekarnia K. I A. Cichowscy 2024 - PRESENT
Dispatch Worker (Warsaw Metropolitan Area,
MASTER’S DEGREE IN
ELECTRONICS AND SYSTEMS
Poland)
Managed and optimized daily logistics and product dispatch data,
ENGINEERING ensuring efficient distribution workflows.
Donetsk National Technical Utilized MS Excel (VLOOKUP, Pivot Tables) and internal databases to
University (Ukraine) | 2009 – 2014 track inventory, analyze discrepancies, and monitor daily KPIs.
Automated routine reporting processes, reducing manual data entry
errors and saving time on daily logs.
CERTIFICATIONS
FreelStep School Adobe after Trade Sector (Ukraine) 2014 - 2024
Effects Advanced Training Self-Employed / Business Owner
Course 2023
GoIT Data Analytics course Analyzed sales performance, market trends, and customer demand to
certificate 2026 optimize purchasing strategies and inventory turnover.
Maintained financial records, tracking revenue, expenses, and profit
SKILLS margins to drive data-backed business decisions.
Managed client databases and evaluated the cost-effectiveness of
Data Analysis & BI: Tableau, Google various marketing and supplier channels.
Sheets (Advanced), MS Excel
(Advanced, Pivot Tables, VLOOKUP, Council (Lyceum "Kolezh") (Ukraine) 2013 - 2014
Power Query), A/B Testing. Electronics Engineer | Donetsk City
Programming & Databases: Python
(Pandas, NumPy, Matplotlib, Conducted system analysis, configuration, and technical support for
Seaborn), SQL (BigQuery, Windows Server and workstation infrastructure.
PostgreSQL/DBeaver), MS Access. Diagnosed and troubleshooted software and hardware issues,
Tools & Environment: Jupyter ensuring high system availability and data integrity.
Notebook, Google Colab, Managed local databases (MS Access), structured technical
Git/GitHub. documentation, and streamlined internal IT workflows.
IT Infrastructure & Admin: Windows
Server/Workstation, Software PROJECTS
Configuration, System
Administration & Tech Support. E-Commerce Revenue & Retention Dashboard | Tableau
Design & Multimedia: Adobe Developed an interactive financial dashboard to visualize key metrics,
Photoshop, After Effects.
including Total Revenue, Paid Users, ARPU, and MRR changes.
Created dynamic filtering and user-segmentation views to track subscriber
LANGUAGES
behavior and performance across different cohorts.
Link: View Tableau Dashboard
Ukrainian (Native)
English B1 (Intermediate / Technical)
Polish (Basics) Business Metrics & Cohort Analysis Project | Google Sheets (Advanced)
Built a comprehensive data model to calculate Unit Economics metrics, user
acquisition costs, and lifetime value (LTV).
Conducted Cohort Analysis using advanced formulas, Pivot Tables, and
conditional formatting to identify customer retention patterns and revenue
leaks.
Link: View Google Sheets Model