Jan 2019 - Jan 2024
kosik.cz
Product Manager, promoted from Product Owner
- b2c
- ecommerce
- growth
Most of my growth-and-product craft comes from Košík - Czech e-grocery at scale. I started as Product Owner on operations, forecasting, and the first international rollout, then was promoted to Product Manager for acquisition and experiment culture.
Product Owner (2019-2022)
- Operations × product: Warehouse & logistics reliability with Metro - cut problem-order rate from ~20% to ~1% through cross-team reliability fixes customers actually feel.
- International: Metro joint venture - Strategic Expansion Planning, then International expansion and Kolichka on time and on budget.
- Forecasting: Demand forecasting - Python model replacing spreadsheet planning in daily ops, 5-10% planning accuracy improvement. Cost takeout and a financial attribution model tying company KPIs to the P&L still shape how I define success metrics.
Product Manager (2022-2024)
- Growth: New customer acquisition (Growth) - onboarding, personalisation, and experiment culture on web and mobile, including years with ~30% YoY new-customer growth.
- Efficiency: SEO and performance work that actually moved CAC, not just rankings.
- Catalog: Custom listing software - supplier portal and partner-built listing platform, ~40% less supplier communication time.
Košík taught me that e-commerce product is logistics with a UI - if ops can't keep promises, no funnel hack saves you.