I built a complete notification interaction system for Yandex Market, covering the entire user journey from onboarding after app installation to any announcement or promo in any part of the app.

I designed unified patterns for push notifications, in-app banners, and promotional campaigns, ensuring they work together as a balanced system rather than competing for attention.

The system was integrated across all app sections and product teams with consistent usage rules, preventing notification fatigue while maintaining engagement across different campaign types.