Teleperformance (formerly Majorel), Poznań
Analytical bridge between ~12 clients, Product Owners, and technical teams, assessing technical feasibility and clarifying business logic across 3 internal teams. Mapped end-to-end data flows from source systems and APIs through Raw, Cleansed and Transformed layers, and validated data across 37 API endpoints spanning 3 regions. Co-created data models, a Data Dictionary and Master Data documentation, and proposed processing optimizations that cut unnecessary data usage and cost.
SQL Azure Databricks Power BI Python Azure DevOps Draw.io
mTab
Delivered data and analytics work across 4 concurrent projects for ~4 clients, coordinating with Development, QA, Business Analysts, and Product teams. Ran data validation, reviews and SQL calculations, tested core analytics-system components after a server migration, and led trainings and workshops while building KPI reporting in C#.
SQL C# SPSS PSPP Jira Confluence
Kynetec
Delivered data cleansing, profiling, tabulation and enrichment for client-facing outputs, and built Excel-based applications to automate recurring reporting processes.
Excel VBA
GlaxoSmithKline
Prepared quality and validation documentation, improved VBA and Excel-based tools, and automated KPI reporting. Supported audits, pilot and manual system testing, and a new system deployment aligned to quality standards.
VBA Excel
GlaxoSmithKline
Analyzed formulas and calculations, built and improved Excel-based tools, and prepared validation plans, protocols, reports, and reviews.
Excel