Case Study
Building the future of banking flutter-powered mobile transformation in Doha
Discover we transformed a corporate mobile banking platform from Kony to Flutter in Doha, enhancing performance, scalability, and user experience while eliminating licensing dependencies and accelerating innovation in digital banking.
Output Achieved
60
%
Faster App Performance
Reduced app load time from 4s to under 2s for a leading Doha corporate bank.
3
X
Faster development cycles
Enabled the bank to release three new mobile banking features per month, up from one, boosting agility and customer value.
About the project
Our client, a leading corporate bank in Doha, aimed to redefine its mobile banking experience by transitioning from a legacy Kony-based system to a modern, high-performance platform built with Flutter.
With growing digital expectations and the need for faster innovation, the bank sought a future-ready solution that offered flexibility, seamless cross-platform performance, and complete independence from proprietary licensing.
The Challenge
As digital banking demands evolved, the existing Kony-based mobile application began showing limitations that hindered innovation and customer satisfaction.
Key challenges included:
- Performance Inefficiencies: Reliance on runtime abstraction layers caused slow load times and responsiveness issues.
- Limited UI/UX Flexibility: Restricted widget customisation prevented modern, intuitive design implementations.
- Integration Barriers: Difficulty integrating APIs, SDKs, and advanced features like biometrics or analytics.
- Vendor Lock-In: High licensing costs and proprietary dependencies limited scalability and control.
- Scalability Constraints: Adding new modules or features required major rework, delaying releases.
To stay ahead in the competitive digital banking landscape, a complete architectural overhaul became essential.
Our Approach
We adopted a Clean Architecture framework, ensuring modularity, scalability, and ease of maintenance, allowing each layer to evolve independently while delivering superior performance and code clarity.
Architecture Overview
The re-engineered corporate mobile banking app was developed using Flutter, chosen for its native rendering capabilities, consistency across devices, and high performance.
Key architectural principles included:
Presentation Layer:
Built using Flutter widgets and the MVVM pattern to maintain separation of state and UI.
Implemented Riverpod for efficient reactivity and testability.Domain Layer:
Encapsulated core business logic through reusable use cases, entities, and repository interfaces.Data Layer:Managed RESTful API integrations using Dio, combined with encrypted local storage and unified data handling.
Technical Stack and Integration
State Management: Riverpod
Networking: Dio with authentication and logging interceptors
CI/CD: Bitbucket Pipelines integrated with Firebase TestLab
Security: SSL pinning, biometric authentication, JWT-based session handling
UI Framework: Material Design 3 (MD3) for modern, responsive layouts
Migration Strategy
The migration from Kony to Flutter was executed in structured, incremental phases to ensure parity, performance, and seamless user transition:
Requirement Analysis & Parity Audit: Mapped all Kony modules and functionalities to Flutter equivalents.
UI Redesign: Revamped the interface for a modern, user-centric experience aligned with the bank’s brand identity.
Backend Alignment: Standardised APIs for smooth communication with existing middleware.
Testing & UAT: Conducted comprehensive QA and regression testing for functionality and performance assurance.
Deployment: Continuous monitoring implemented via Firebase Crashlytics and integrated analytics for post-launch optimisation.
Solution
The new Flutter-powered mobile banking platform offered a unified experience that combined performance, scalability, and modern UI design with advanced security and developer flexibility.
Key Features
Unified Cross-Platform Interface: Seamless experience across Android, iOS, and Web.
Biometric Authentication: Secure access with Face ID, Touch ID, and device-level encryption.
Optimised Performance: Reduced load times from 4 seconds to under 2 seconds.
Modular Architecture: Independent module updates without impacting the entire system.
Enhanced Developer Efficiency: Hot reload and a modular codebase accelerated debugging and iteration.
Advanced Security: SSL pinning, encrypted storage, and token-based authentication ensured compliance-grade protection.
Problem Solved
The transition to Flutter with a Clean Architecture approach addressed critical business and technical bottlenecks:
Performance & Responsiveness: Achieved near-native speed by removing Kony’s runtime abstraction.
Cost Optimisation: Eliminated recurring licensing expenses and proprietary dependencies.
Developer Agility: Empowered internal teams to build, test, and deploy new features faster.
Integration Flexibility: Simplified integration with APIs, analytics, and SDKs.
Future Scalability: Modular design supports future features like AI-based personalisation, digital onboarding, and predictive insights.
The Impact
The modernisation initiative resulted in measurable transformation across performance, cost, and customer experience metrics:
60% Faster Performance: Reduced app load time from 4s to under 2s.
3x Development Velocity: Feature deployment increased from one to three per month.
Cost Efficiency: Major savings achieved through license elimination and streamlined development.
Enhanced User Experience: Improved responsiveness, accessibility, and intuitive design.
Operational Independence: Full in-house management without reliance on external vendors.
This transformation not only improved technical performance but also positioned the bank as a digitally progressive financial institution, ready for the future of mobile banking.
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