Experience

Over a decade in e-commerce

Three companies, one industry — from product category management, through a content team, to data architecture and BI pipelines.

Stileo → GLAMI Group

Jul 2020 – present · 6+ years
Data Analyst → Senior Data Analyst

Stileo, acquired by GLAMI Group in 2026 — continuous employment.

  • ▪Since October 2026 co-leading the warehouse migration from Keboola and Snowflake to Google Cloud: BigQuery as the warehouse, Dataform for transformations, Cloud Run for extraction from MySQL and SaaS sources, Cloud Scheduler and Workflows for orchestration. I own the plan and architecture, the extraction layer and the Tableau switch-over; the scope covers 100+ SQL transformation blocks, 14 markets and a dozen sources, with both warehouses running in parallel and numbers validated before Keboola is switched off (deadline: March 2027).
  • ▪Maintained and developed the company data warehouse on Keboola (Snowflake) — ~440 components serving 13+ markets: extraction from MySQL and ~20 other sources, ~100 SQL transformations (220+ blocks), and the writer layer feeding Tableau, Holistics and BigQuery. Owned the daily multi-phase production pipeline end to end, from extraction through aggregation to BI export.
  • ▪Data modelling and business reporting — designed and developed the SQL transformations behind revenue, marketing and monthly reporting, as well as client portfolio analyses (brand ranking and performance per e-shop). Worked directly with business stakeholders: turning a business question into a data model, and the model into a Tableau/Holistics dashboard.
  • ▪Ensuring data quality and optimising pipelines for speed and infrastructure cost — maintaining data correctness and consistency along the full path from source to BI report. SQL optimisation, cutting the runtime of heavy aggregation blocks, eliminating repeated scans of the same tables, and rewriting queries around the actual execution plan. Optimising data flow and choosing the right level of aggregation.

Ringier Axel Springer Polska

Sep 2019 – Jun 2020 · 10 mo.
Web Analyst
  • ▪Built and maintained automated Tableau reports for the group's e-commerce sites.
  • ▪Developed Google Analytics and Tag Manager tracking, plus reports and recommendations based on internal data.

Earlier: Content Commerce Team Lead and Category Manager at RASP (2016–2019), Content Development Specialist at Ceneo (2013–2016) — 7 years managing content and product categories in e-commerce before moving into data analytics.