Oleksandr Hreshchuk
Oleksandr Hreshchuk

Data Analyst

Open to offers · Member since 14 Sep 2026
Location
Odesa, Ukraine
Desired salary
Unspecified
Work preference
Hybrid / Full Time
Experience level
Mid

About

Professional summary

I am a Data Analyst with a financial background and 25 years of experience in financial analysis, accounting, and business process management. I combine rigorous financial thinking with modern data analytics practices to support informed business decisions.

I am proficient in SQL, Python, Tableau, Power BI, Excel, and Google Sheets. My analytical workflow includes collecting, cleaning, standardizing, querying, and visualizing data from multiple sources.

I have hands-on experience building interactive dashboards and recurring reports for sales, conversion, retention, and user activity metrics. I use pivot tables, advanced SQL queries, statistical analysis, and visualization to identify trends and anomalies.

My portfolio includes sales dashboard development, statistical sales analysis, and end-to-end e-commerce traffic and sales analysis using BigQuery SQL, Python, and Tableau. I have worked with revenue, profitability, sales channels, geographic concentration, seasonality, and customer behavior data.

I am experienced in hypothesis testing, correlation analysis, A/B testing concepts, and reporting findings clearly. I am open to remote, hybrid, and relocation opportunities where I can apply my financial expertise and data analytics skills.

Skills

24 capabilities

Tech stack & tools

Working toolkit

Development

Experience

Career history

Data Analyst BeLight Software, Ltd.

Collected and processed sales and user activity data for the company product line from internal systems, the online store, and the App Store. Assisted with data cleaning and standardization, including duplicate removal, error correction, and format unification.

Built and maintained reports and dashboards in Excel, Google Sheets, and Tableau to track sales, conversion rate, and retention. Used pivot tables, formulas, and charts to identify sales and user-behavior trends and prepared recurring metric reports for the team.

Chief Accountant LLC "Pryboi"

Provided accounting services for one limited liability company and several individual entrepreneurs operating under the simplified tax system, including groups 2 and 3.

Managed financial flows by controlling income and expenses, monitoring accounts receivable and payable, and preparing and submitting tax returns. Used financial analysis to support accurate reporting and business process management.

Education

Learning history

Odesa State Economic University

Master's Degree (with honors), Accounting and Auditing

Faculty of Accounting and Auditing.

Mate Academy

Data Analyst Course, Data Analytics

Completed Data Analyst training.

WebPromoExperts

SEO-optimization Course, SEO

Completed SEO-optimization training.

QA TestLab

QA Course, Test Engineer, Quality Assurance

Completed QA and test engineering training.

Computer Academy "Step", Odesa

Network Technologies and System Administration, Network Technologies and System Administration

Completed training in network technologies and system administration.

This professional hasn’t added portfolio projects yet.

This professional hasn’t listed any services yet.

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