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Andrii Mamchenko

PROFILE

Andrii Mamchenko

Worked on the Adyen/adyen-ios and Adyen/adyen-android repositories, delivering modular SDK features, UI modernization, and robust validation systems for payment flows. Focused on modularizing the iOS SDK with CocoaPods, refining API surfaces, and aligning UI theming with v6 design standards using Swift and Ruby. Enhanced validation architecture and event handling for both iOS and Android, leveraging Kotlin and reactive programming to ensure consistent, reliable user feedback. Improved localization, address formatting, and test infrastructure, streamlining developer workflows and reducing integration risk. Emphasized maintainability through code formatting, documentation, and continuous integration, supporting efficient onboarding and stable cross-platform releases.

Overall Statistics

Feature vs Bugs

81%Features

Repository Contributions

150Total
Bugs
9
Commits
150
Features
39
Lines of code
331,725
Activity Months6

Work History

March 2026

11 Commits • 3 Features

Mar 1, 2026

Month: 2026-03 | Adyen/adyen-ios This month focused on strengthening address handling, UI theming, and test infrastructure to improve localization, reliability, and maintainability. Key features delivered include locale-aware address formatting with a streamlined address picker, and extensive UI/test refinements to support dynamic theming and appearance refresh. Repository hygiene improvements were also implemented to reduce noise and improve CI stability. The work enhances global user experience, reduces risk of formatting regressions, and provides a solid foundation for future UI and localization enhancements.

February 2026

27 Commits • 7 Features

Feb 1, 2026

February 2026 highlights across iOS and Android focused on reliability, UX consistency, and developer efficiency through validation architecture improvements, expanded test coverage, and cleanup/migration work. Cross-platform efforts aligned validation behavior with WebSDK, introduced deterministic error handling with pinned codes, and improved lifecycle management for event subscriptions. Android saw substantial testing enhancements for card number validation and TextInputComponentState, improving feedback and stability during card entry. Overall, these changes reduce defect recurrence, accelerate release readiness, and enable clearer, more maintainable validation flows across platforms.

January 2026

21 Commits • 3 Features

Jan 1, 2026

January 2026 monthly summary focusing on key features delivered, major bug fixes, impact, and skills demonstrated. Highlights across iOS and Android include code formatting standardization, UI validation reliability improvements, and card brand visibility tests, which together improve maintainability and user experience in the payment flows.

December 2025

62 Commits • 22 Features

Dec 1, 2025

December 2025 monthly summary for Adyen/adyen-ios: Delivered substantial feature work, API and UI improvements, and stability fixes that enhance developer productivity, ensure consistent design with v6, and reduce risk in release cycles. Key outcomes include API surface refinements, SwiftFormat-driven header and internal config updates, UI/theme propagation, and documentation alignment for v6 ACH integration.

November 2025

17 Commits • 2 Features

Nov 1, 2025

November 2025: Focused on delivering flexible theming for SEPA Direct Debit and modernizing ACH Direct Debit with Checkout integration, resulting in a cohesive, testable, and merchant-friendly payment experience. The work established consistent UI theming, enhanced test coverage, and clear migration guidance to accelerate AdyenCheckout adoption.

April 2025

12 Commits • 2 Features

Apr 1, 2025

Monthly summary for 2025-04 focused on delivering a modularized Adyen iOS SDK podspec and improving CocoaPods compatibility, with a clear emphasis on business value, stability, and maintainability. The work enabled easier integration for developers, finer-grained module control, and more robust distribution readiness for the Adyen iOS SDK.

Activity

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Quality Metrics

Correctness97.0%
Maintainability93.6%
Architecture93.8%
Performance92.8%
AI Usage20.2%

Skills & Technologies

Programming Languages

KotlinMarkdownNoneObjective-CRubyShellSwiftXMLYAML

Technical Skills

API DesignAPI IntegrationAndroid developmentAnimation HandlingCocoaPodsCocoapods IntegrationCode FormattingComponent ArchitectureComponent DesignComponent-Based ArchitectureComponent-based ArchitectureContinuous IntegrationDevOpsDocumentationForm Validation

Repositories Contributed To

2 repos

Overview of all repositories you've contributed to across your timeline

Adyen/adyen-ios

Apr 2025 Mar 2026
6 Months active

Languages Used

Objective-CRubySwiftXMLMarkdownShellYAMLNone

Technical Skills

CocoaPodsCocoapods IntegrationMobile DevelopmentRubyXcode Project ConfigurationiOS Development

Adyen/adyen-android

Jan 2026 Feb 2026
2 Months active

Languages Used

Kotlin

Technical Skills

Android developmentKotlintestingunit testing