Yaw Opoku Mensah Baffoe

SQL (PostgreSQL, BigQuery), Python (pandas, basic automation), Looker Studio, Excel, data cleaning & validation, dashboard design

Advanced SQL (window functions, query optimisation), Python for data pipelines (requests, APIs), and cloud basics (Google BigQuery, dbt).

Building an automated monthly reporting pipeline for e‑commerce sales data (BigQuery + Looker Studio). Next project: cohort retention analysis and RFM segmentation.

Quick data audits, retention analysis, or dashboard builds for small e‑commerce stores. Open to freelance projects and collaboration on data driven content.