Faez Nasir

Senior Mobile App Developer with 8+ years across iOS, Android, and cross-platform development (Flutter, React Native), including modern declarative UI with SwiftUI and Jetpack Compose. Drives mobile app performance and stability through performance optimization, crash monitoring (Crashlytics, Sentry), unit testing, and continuous integration. Expert in API integration, state management (Riverpod, BLoC, Redux), on-device storage, mobile analytics, UI/UX design, and on-device AI/ML integration (Core ML, ML Kit), with hands-on agile methodologies, team collaboration, and secure delivery using mobile security best practices.

Strong at wireframing, prototyping, and app store submission to ship high-impact features aligned with business goals.

Senior Mobile Application Developer at Self-Employed (Contract/Freelance) (2022-03 – Present)

• Leading development of cross-platform and native mobile applications using Flutter, React Native, Swift (SwiftUI), and Kotlin (Jetpack Compose).
• Architecting scalable mobile solutions with REST API integrations and cloud services (Firebase, AWS).
• Implementing CI/CD pipelines (Jenkins, Fastlane) to automate build, testing, and deployment processes.
• Driving performance and stability improvements — crash rate reduction using Firebase Crashlytics and Sentry, load time optimization, and offline capabilities.
• Integrating on-device AI/ML features using Core ML and ML Kit for smart, low-latency in-app experiences.
• Integrating secure payment gateways (Stripe, PayPal) and authentication systems.
• Mentoring developers and enforcing code quality through structured review processes.
• Collaborating with product and design teams using Figma for wireframing and prototyping.

Mobile Application Developer at Glixen Technologies LLC (2019-09 – 2022-02)

• Developed and maintained mobile applications using React Native, Swift (iOS), and Kotlin (Android).
• Integrated RESTful APIs and cloud services supporting applications with 100k+ active users.
• Migrated native iOS applications to React Native, reducing development time by 35% and improving user retention by 15% using analytics and A/B testing strategies.
• Implemented state management with Redux and BLoC to keep complex, multi-screen app state predictable and testable.
• Optimized app performance through caching, pagination, on-device storage (Core Data, Room), and network enhancements.
• Created API testing workflows and documentation using Postman.
• Contributed to onboarding processes and development best practices.

Mobile Application Developer at Northwest Partners (2017-02 – 2019-08)

• Built mobile applications using Swift, Kotlin, Flutter, and React Native.
• Implemented unit and integration testing (JUnit, XCTest) to improve code quality; integrated third-party libraries (Retrofit, Alamofire, Glide, Lottie) for faster development.
• Debugged and resolved application issues, improving reliability and performance.
• Participated in agile development processes including sprint planning and backlog refinement.
• Maintained technical documentation for APIs and development workflows.

Master of Information Technology Management in Information Technology Management – Concordia University-St. Paul (2018-08 – 2019-12)

Native iOS & Android Development Certification in Mobile Development – LinkedIn (2015-09 – 2016-04)

SCRUM Master Course in Project Management – Coursera (2016-06 – 2016-12)