Keyvan Mozaffari

Architected and deployed high-visibility mobile solutions across fintech and tourism sectors with a focus on performance scaling and automated operations. For WriteUpp (fintech/healthcare), launched a secure clinic payment solution leveraging the Stripe Terminal SDK and integrating NFC, Bluetooth, Apple Pay, and Google Pay, achieving a 99.9% transaction success rate. For Esseno (tourism/e-commerce), developed core UI architecture and real-time state synchronization for personalized tourism deals with frequent live updates. Partnered with design to improve UI rendering patterns, reduced app load times by 30% on legacy devices, and built deployment pipelines with Fastlane and CI/CD tooling to reduce deployment time by 40%, improve team velocity by 25%, and reduce post-release bugs by 40%.

Led mobile development for a real-time, cross-platform competitive gaming application. Engineered high-performance WebSocket mechanics to support low-latency user matching and real-time state synchronization during active gameplay. Refactored caching and state management patterns with Redux Toolkit to eliminate UI memory leaks and improve frame-rate responsiveness. Mentored engineers via rigorous code reviews and established unified coding standards across the mobile app and the PHP/Laravel backend layer.

Built, maintained, and deployed multiple high-scale white-label mobile applications from a unified React Native codebase. Migrated state management from Redux to React Query to reduce unnecessary API overhead by ~20% and improve offline stability. Engineered real-time communication modules including chat and push notifications using Socket.io and Node.js. Designed and configured automated Fastlane CI/CD pipelines from scratch, eliminating manual App Store and Google Play deployments.