Designed and built an offline-first personal planner app that helps users organize schedules, appointments, and daily tasks. Implemented seamless offline functionality with background synchronization and silent push updates when reconnected. Delivered a calendar view with conflict detection, reminders, and cancellations. Integrated on-device voice-to-text for note-taking and created a robust export/import workflow. The app featured a custom calendar UI with a focus on privacy and reliability.

Senior iOS Developer at Horizon Skills

February 28, 2022 - October 9, 2025

Led iOS development using Swift and Objective-C, implementing AVFoundation, Core Data, and Core Animation. Built scalable architectures (MVC, MVVM, Combine) and integrated geolocation features. Implemented SSL pinning and secure keychain storage, diagnosed memory leaks with Instruments, and collaborated with backend, hardware, and design teams to improve app performance and reliability. Drove the App Store release process with Fastlane, delivering 20+ production and beta releases to a user base of 500k+.

Senior iOS Developer at Mobile Stack er

March 20, 2022 - Present

Developed and optimized a real-time video processing feature using AVFoundation and Core Image, achieving 60 FPS on iPhone X and newer. Pioneered SSL pinning and secure keychain storage; resolved complex memory leaks and background state management with Instruments. Managed the complete App Store release lifecycle using Fastlane (20+ releases for a user base >500k). Architected modules following MVVM and MVC patterns; collaborated with hardware, backend, and design teams to deliver secure, high-performance iOS apps.

iOS Developer at Horizon Skills

May 20, 2020 - October 10, 2025

Led design and development of native iOS applications using Swift and Objective-C, implementing Core Data, Core Animation, and secure data handling. Improved app stability by diagnosing and resolving memory leaks and background state issues using Instruments. Managed App Store lifecycle with Fastlane and delivered multiple production releases to a user base around 500k+.

Senior iOS Developer at Horizon Skills

February 20, 2022 - October 10, 2025

Architected end-to-end iOS platform solutions for high-performance, secure, scalable apps. Implemented SSL pinning, secure Keychain storage, and memory/crash optimization that reduced crash rates by ~75%. Led CI/CD integration with Git, GitHub, Azure DevOps, Jenkins, and Fastlane. Drove architecture decisions around MVC/MVVM and contributed to offline data strategies and RESTful API integrations.

Senior iOS Developer at Horizon Skills

March 20, 2022 - Present

Continued as lead iOS developer focusing on bridging cross-functional teams, hardware integration (BLE protocols), and design. Pioneered projects like My Day App and Transcribe App; strong specialization in Swift, Objective-C, and BLE for iOS. Led development that supports offline storage, core data models, and end-to-end CI/CD using Azure DevOps. Transitioned to long-term architecture responsibilities and mentoring.

Senior React Native Developer

March 1, 2022 - October 27, 2025

Built a multi-platform real-time data streaming app for iOS and Android using Web Sockets and React Native; led end-to-end development, implemented Redux Toolkit, TanStack Query, Context API, and MobX, and integrated 10+ third-party SDKs and RESTful APIs with PostgreSQL and MongoDB. Established CI/CD workflows, improved Time To Interactive by 50%, and increased weekly active users. Implemented offline/background sync, push notifications, and robust UI with Tailwind CSS. Achieved test coverage growth from ~40% to ~90% using Jest/Testing Library and reduced crash rate by 95% (Crashlytics). Collaborated with Jira/Trello/Asana/Monday for project management and maintained code in GitHub within an Agile setup.