• Fix critical issues that affected successful payment completion.
• Modernize the outdated, tightly coupled Java-based SDK with a unified architecture.
• Enable customization of UI components for onboarding new partners.
• Improve development speed, reliability, and overall maintainability

We carried out the modernization in three major phases:

Updating the build foundation

• Upgraded Gradle and the Android Gradle Plugin to current versions.
• Added product flavors and organized build configurations.
• Set up automated delivery pipelines using Fastlane.

Restructuring and decoupling the legacy SDK

• Separated the SDK into independent Core and UI components.
• Isolated business logic and streamlined layout structure.
• Eliminated repeated code and resolved long-standing defects.

Creating a new SDK on a modern tech stack

• Developed a Kotlin Multiplatform core with an MVVM/MVI architecture.
• Adopted Jetpack Compose for Android and SwiftUI for iOS.
• Completed full migration to Kotlin.
• Integrated analytics and implemented automated unit and UI testing.