Production advertising platforms, fintech backend systems, and shipped mobile apps.

A production-ready agile estimation app with a Claude Design redesign, Codex-built frontend, and Go backend deployed on Hetzner.

A React Native (Expo) app to transfer playlists between Spotify and YouTube Music with secure on-device token storage and subscription support.

A modern React Native app to track daily water intake with smart reminders and analytics.
A performance-driven advertising product that enables brands and sellers to promote products across Hepsiburada with advanced targeting and optimized ad placements.
A brand advertising feature that lets brands showcase identity and product ranges at scale through prominent placements and custom branding opportunities.
A merchant credit platform for managing advertising budgets through earnings transfers, credit-card balance management, and financial oversight.