Rubas Hussain

Senior Flutter Developer

Talent

KarachiMember since June 22, 2026

BlocGetXProviderFirebasePush NotificationsGoogle MapsLive TrackingPayment Gateway IntegrationChat IntegrationTeamsApple App StoreSwiftSwiftUIREST APIs

Hire this person

Send a job offer directly to this candidate

BlocGetXProviderFirebasePush Notifications

About

I am a Flutter developer with 4+ years of experience building scalable, user-centric mobile and web applications. I have contributed to the development and maintenance of 15+ production apps, including platforms serving 15,000+ daily active users, where I have a significant stake in delivering features with a strong focus on performance, reliability, clean architecture and less bugs. Proficient in Dart, I regularly use Bloc, GetX and Provider for state management and follow MVVM and MVC architectural patterns to write maintainable, testable code.

Additionally, I have hands on experience in native iOS development using Swift and SwiftUI, enabling me to build iOS specific applications based on client requirements with a native first approach. I have hands on experience integrating REST APIs, working with Firebase services and implementing features such as real time tracking, background services, and push notifications.

Experience

Senior Mobile Engineer (Flutter & iOS) at DevDefy (2025-08 – Present)

Managed the development of multiple applications across diverse domains, delivering scalable and high-performance solutions while maintaining code quality and timely releases. Designed robust architectures for thousands of users, focusing on scalability, performance optimization, memory leak prevention, debugging, and modernization of legacy codebases.

Mid - Level Mobile Application Developer (Flutter & iOS) at Aman Albilad Systems (2023-12 – 2025-07)

Mid-level Mobile App developer with experience mentoring interns in designing, developing, and debugging applications. Implemented WebSockets for real-time tracking in a logistics delivery app with background location syncing, and actively participated in debugging and code reviews to optimize performance and maintain clean architecture.

Mid - Level Mobile Application Developer (Flutter & iOS) at iPlexSoft (2023-01 – 2023-12)

Worked on multiple production applications with an existing user base, contributing to ongoing maintenance, feature enhancements, and continuous performance optimization.

Junior iOS Developer at Sofcodix (2022-01 – 2023-02)

Built scalable, high-performance iOS apps for mobile, aligned with client needs. Collaborated with Django backend and design teams to integrate APIs and deliver smooth user experiences. Optimized frontend performance and deployed multiple apps to the Apple App Store.