Zaryab Shakir

Worked on Comera Pay, the payments offering within the Comera app, which has 10M+ Google Play downloads. • Owned the end-to-end Android integration of Google Pay and built UI and API integrations for transfers, bill payments, cards and National Bonds. • Owned the ZShield app-security SDK integration, coordinating directly with the vendor on code obfuscation and root/Frida detection. • Implemented token-handshake and payment-callback handling within the live TAMM–Comera Pay SDK integration. • Integrated UAE

Developed features for ADIB Mobile Banking, which has 1M+ Google Play downloads. • Led code reviews, technical decisions and mentoring within the Branch Services squad. • Implemented secure QR-based second-device registration, coordinating Android, CIAM and microservices teams. • Delivered Dubai Police fine payments, a financial calculator and custom authenticated account statements. • Built new and revamped features in Kotlin and Jetpack Compose while maintaining existing XML components. • Resolved critica

Developed production Android apps for cryptocurrency wallets, exchanges and ICOs, alongside image-processing and AI products. • Maintained and extended Coinam, a Bitcoin wallet app taken over from a European team, introducing Kotlin incrementally into its legacy Java codebase. • Built libraries for BIP39, BIP32, Base58 and secp256k1, including JNI/NDK and C++ integration. • Implemented secure handling of private-key data. • Built an OpenGL-based image-editing engine and integrated Huawei ML Kit for backgro

Developed Android features for Fayvo, a feature-rich social media app. • Built pixel-accurate interfaces from product designs. • Resolved production issues in real-time chat, push notifications and animations. • Implemented client-specific requirements in collaboration with product, design and backend teams. Technologies: MVVM, Retrofit, Dagger 2, OneSignal and Pusher.

TOP-RATED SELLER ON UPWORK. Work and responsibilities * Worked with different clients and companies with different timezones worldwide. *Developed complex, scalable and robust mobile applications from scratch. |Social media applications | Banking and fintech applications | Complex utility applications|Video applications like Tiktok | Map-Based Multi-purpose applications |AR(Augmented Reality) | MVVM | MVI |Clean architecture. *Worked on already developed mobile applications with senior mobile and architect