Богдан

BOHDAN POSHTARENKO
DATA ANALYST
Warsaw, Poland | [відкрити контакти](див. вище в блоці «контактна інформація») | [відкрити контакти](див. вище в блоці «контактна інформація»)

PROFILE
Data Analyst with 4 years of experience across microfinance and iGaming. Strong in PostgreSQL, Excel, Metabase, and Power
BI, with additional hands-on experience in Python. Combines SQL-based analytics for cross-functional teams with the
operational execution of customer communication, promotional, and loan-prolongation campaigns. Skilled at translating business
requests into accurate datasets, repeatable reports, and auditable metrics.

PROFESSIONAL EXPERIENCE
Data Analyst | NDA Microfinance Company Jun 2026 - Present
 Prepare and launch customer communications for promotional campaigns, loan-prolongation offers, and other operational initiatives.
 Write PostgreSQL queries and provide ad-hoc datasets, reports, and data checks for the needs of different business departments.
 Build customer and credit selections, validate campaign parameters and recipient lists, and reconcile outputs before launch.
 Support operational reporting in Metabase and Excel and investigate discrepancies in campaign and collection metrics.
Middle Data Analyst | NDA Company Sep 2024 - Apr 2025
 Built a Power BI dashboard for comparing campaign performance across countries and regional segments.
 Automated four recurring Python reports: ARPU, customer base dynamics, provider comparison, and bonus cost analysis.
 Analyzed retention and return rates, maintained Asia-region data, and delivered ad-hoc analyses for cross-functional teams.
Middle Data Analyst | Slotor777 Nov 2022 - Sep 2024
 Built end-to-end reporting pipelines from PostgreSQL extraction and Python transformation to Excel/VBA delivery.
 Created email and SMS campaign reporting that contributed to an approximately 50% CPA reduction and a 150% increase in
average customer spend.
 Supported the design of a retention bonus system and developed customer profiling and segmentation used in marketing strategy
and market positioning.
Junior Data Analyst | The Originals Jul 2022 - Nov 2022
 Developed product-ranking logic aimed at improving website conversion.
 Prepared foundational reports on customer behavior and customer classification.

TECHNICAL SKILLS
SQL & Databases: PostgreSQL, complex joins and CTEs, window functions, data validation
Python: Pandas, NumPy, Matplotlib, Jupyter, reporting automation
BI & Reporting: Metabase, Power BI, Excel, VBA, Power Query
Analytics: Collection KPIs, operational performance, retention, campaign analysis, segmentation

EDUCATION & LANGUAGES
BSc in Economics, National University of Kyiv-Mohyla Academy | Finance, Banking and Insurance | 2018-2022
Languages: Ukrainian - Native; Russian - Fluent; Polish - C1; English - B2