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Work experience

Data analyst

from 02.2026 to now (6 months)
Mate academy, Дистанційно (Освіта, наука)

- Extracted, transformed, and analyzed data using SQL and Python
- Built Tableau dashboards for KPI reporting and business analysis
- Applied statistical methods and A/B testing to validate business hypotheses

Portfolio:
- SQL Project: BigQuery analytics, KPI reporting, query optimization [https://github.com/IrinaMatviichuk/DataAnalystSQLProjects]
- Python Project: EDA, statistical testing, and sales trend analysis [https://github.com/IrinaMatviichuk/DataAnalystPortfolioProject]
- Tableau Projects: Interactive dashboards for A/B testing, email metrics, and web session analytics with KPI tracking and segmentation [https://public.tableau.com/app/profile/iryna.matviichuk/vizzes]
- AB Test: Conversion analysis and statistical significance testing using Python [https://github.com/IrinaMatviichuk/DataAnalystABTest]

Angular-розробник

from 03.2018 to 07.2026 (8 years 5 months)
JazzServe, Київ (IT)

- Designed and implemented UI solutions for business data, analytical metrics, and operational processes.
- Developed Angular applications for internal corporate systems, POS solutions, and an educational platform.
- Successfully delivered 11+ projects to production.
- Tech Stack: Angular, REST APIs, NgRx, RxJS, WebSocket, Git
- Public Angular Projects: [https://iknoweng.com/ua]

Key Responsibilities:
Proposed and implemented a configurable lesson and exercise editor that enabled platform scalability, significantly reduced content launch time, and eliminated dependency on the frontend team for routine content updates.

Аналітик

from 07.2006 to 08.2017 (11 years 2 months)
Fozzy Group, Київ (Роздрібна торгівля)

Career Progression:
- Lead Specialist, Process Audit & Development (Logistics) - Sep 2015 - Aug 2017
- Lead Specialist, Supply Chain Management (Logistics) - Jan 2014 - Sep 2015
- Supply Specialist, Supply Chain Management (Logistics) - May 2011 - Dec 2013
- Head of Inventory Accounting Department (Silpo Retail Stores) - May 2008 - Apr 2011
- Inventory Accounting Specialist (Silpo Retail Stores) - Jul 2006 - Apr 2008

Technologies / Tools:
- SQL, Excel, Analytical Reporting, KPI Monitoring

Key Responsibilities:
- Analyzed operational KPIs, including inventory levels, sales, supply performance, and inventory turnover
Built analytical reports to support operational monitoring and management decision-making
Defined business requirements for process automation initiatives
Key SQL-Based Analytical Cases:
- Designed and implemented business logic for a real-time ingredient availability check algorithm in Positano restaurant’s inventory management system, increasing availability of critical ingredients from <30% to 100%.
Developed business logic and calculation rules for shipment volume forecasting from distribution centers to branch locations, reducing forecast error from >200–500% to 20% for the first two days and to 2-4% for the following five days, significantly improving transportation planning during peak periods.

Education

National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute"

Applied Mathematics, Київ
Higher, from 2004 to 2011 (7 years)

Additional education and certificates

Data Analyst

2026
Certificate

Knowledge and skills

• MS Excel
• Google Sheets
• SQL
• Python
• Tableau
• Statistics
• A/B testing
• Supply chain management
• Angular
• REST API
• WebSocket
• Git

Language proficiencies

English — average

Additional information

- Participant in Ukrainian National Olympiads in Mathematics and Physics; awarded 2nd place in Regional Mathematics Olympiads and 3rd place in the Regional competition of the Junior Academy of Sciences of Ukraine, Mathematics Section
- Participant in the international table tennis tournament Veteran T.T. Tournament (Antalya, 2019)
- Tandem Skydive with Instructor (2021)
- Awarded a commemorative badge by the Commander of the Air Force Command Center for volunteer support of the Armed Forces of Ukraine (2025, number 172)