At ООО «Почтовые технологии», I maintain an executive dashboard used by 70+ top-management users and support data marts for product, sales, logistics, and international business analysis. I also automated Python data extraction pipelines, reducing processing time from one hour to 15 minutes and saving 200+ hours annually.
I developed data quality checks across PostgreSQL and Greenplum marts and created a Python reconciliation script comparing three systems. It eliminated manual checks, reduced discrepancies by 14%, and helped recover 50+ million RUB.
