AbdülSamet Çakmak

I've maintained and extended Garanti BBVA Mobile, a banking app used daily by 10M+ customers, while owning SWIFT transaction defects end to end and shipping Kotlin and Java features through production. Previously at OBSS, I built QR payment and loyalty integrations for 1,000+ PAX and TOKEN POS terminals and led Halkbank's Java/XML-to-Kotlin and Jetpack Compose migration.

I've also delivered Metodbox in Flutter for 50,000+ students, including live classes, testing modules, and analytics dashboards. My work spans regulated banking, retail payments, entertainment, education, and hardware-connected products.

Outside mobile teams, I build products end to end. Costwares is a restaurant finance and BI platform with P&L, margin, inventory, and role-based analytics; I also built PostPilot, an AI-assisted Chrome extension with a paying tier, and multiple React, Next.js, Firebase, Supabase, and Python projects.

Two of my own apps are live on Google Play, and I handle architecture, implementation, store releases, and production support. I enjoy building reliable products that solve real operational problems, from payment outages to financial decision-making.