Solution Engineer

TransPerfect | Warsaw, Poland

• Developed interactive dashboards in Tableau and Power BI to visualise KPIs and support business decisions.
• Collaborated with finance/support teams to analyze transactional behavior and identify patterns related to billing flows and payment performance.
• Developed SQL queries to extract and analyze billing and transactional data, supporting financial reporting.

Geospatial Data Specialist

Cognizant Technology Solutions | Krakow, Poland

• Performed routine data quality checks by validating data freshness, completeness, and anomaly detection across large datasets
• Liaised with vendor data contacts to validate missing fields, resolve discrepancies, and improve consistency across large datasets
• Conducted geospatial data analysis using SQL and GIS tools, improving mapping accuracy for Google Maps.

Junior Data Analyst

Accenture Poland | Krakow, Poland

• Monitored key financial performance indicators (refunds, dispute flags, and transaction anomalies) to support risk assessment and improve data accuracy.
• Assisted in designing and evaluating A/B tests to assess the impact of data-driven changes on system performance.
• Used statistical methods to identify unusual patterns in billing-related data and support root-cause investigations
• Built dashboards visualizing billing and payment performance KPIs for cross-functional stakeholders.
• Documented SQL queries(Big Query), analytical logic, and insights to maintain transparency and reproducibility across teams