ivan User

At AMZ Advisers, I owned the data and analytical systems behind an 8-figure portfolio spanning 100+ marketplace accounts across the US, Canada, Mexico, and Europe. I consistently helped grow total portfolio sales by more than 30% year over year.

I designed and built an internal Python ETL tool that ingested Amazon Ads and Seller Central API data, automated account audits, and surfaced prioritized opportunities. I also processed large campaign and sales datasets using Python and SQL-style queries to identify trends and resolve anomalies.

I founded the advertising department from scratch, recruiting and leading an 11-person cross-cultural team across multiple time zones. Earlier at Snowball Partners Agency, I created advertising campaigns, strategies, and processes while integrating paid-media performance data with organic SEO signals for mid-market sellers.

My industrial engineering background shapes how I approach complex business challenges: blending data-driven decision making with practical, tailor-made solutions. My work includes dbt and BigQuery analytics engineering, statistical modeling, regression diagnostics, and supply chain optimization.