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Oscar Spruit

PROFILE

Oscar Spruit

Oscar Spruit developed and maintained the Adyen/adyen-android repository, delivering a modular, scalable Android payments SDK with robust checkout, drop-in, and payment method integration. He architected plugin-based build systems, modernized Gradle workflows, and implemented stateful UI components using Kotlin and Jetpack Compose. Oscar introduced binder-based IPC for drop-in workflows, enhanced API surface stability, and improved CI/CD automation for safer releases. His work included rigorous unit testing, comprehensive documentation, and the adoption of ADR-driven architecture governance. By focusing on code quality, modularity, and maintainability, Oscar enabled faster onboarding, reliable payment flows, and a more consistent user experience for merchants and partners.

Overall Statistics

Feature vs Bugs

85%Features

Repository Contributions

719Total
Bugs
42
Commits
719
Features
247
Lines of code
44,555
Activity Months19

Work History

January 2026

24 Commits • 8 Features

Jan 1, 2026

January 2026 (Adyen Android) delivered a set of architecture-enabled features and reliability improvements that strengthen modularity, testability, and release governance, while advancing user-facing drop-in workflows. Key features delivered include ADR-driven architecture governance, a drop-in architecture refactor with binder-based IPC, and payment method repository integration with tests. Major bugs fixed include Dimensions usage after rebasing and safe unbinding of DropInService. Public API and CI/CD improvements update API specs and permissions to ensure safer releases. This month also modernized core DropIn and API evolution, introduced DropInManager and DropInServiceManager, and improved code quality through documentation polish and Sonar integration. Technologies demonstrated include Android/Kotlin architecture, binder IPC, repository pattern, lambda-based bindings, ADR process, CI/CD workflow adjustments, and test-driven development.

December 2025

80 Commits • 36 Features

Dec 1, 2025

December 2025 marked a strategic architectural and tooling refresh for the Adyen Android monorepo, delivering foundational investments that enable faster feature delivery, safer releases, and improved developer productivity. The team implemented a cohesive build system and modernized the Checkout Android Library plugin, while retiring buildSrc to simplify build logic and improve maintainability. A new dependency tooling ecosystem and a standardized convention plugin suite were established to enforce quality, streamline CI/CD, and simplify publishing. UI scaffolding and internal state modeling were overhauled to improve stability, UX, and testability across the DropIn flow. Targeted bug fixes and reliability improvements reduced CI risks and improved UI consistency for end users.

November 2025

156 Commits • 50 Features

Nov 1, 2025

Month: 2025-11. Delivered a robust, scalable checkout UX and navigation framework in Adyen Android SDK, with a strong emphasis on business value, developer productivity, and UI consistency. Key features, refined navigation, and drop-in capabilities underpin faster merchant integrations and a smoother end-customer experience. Highlights include: - Value Picker Core and Searchable Value Picker: Introduced a base ValuePicker composable, added a searchable value picker on top, and replaced MBWay country code picker with the new searchable picker (commits: b435c0be51db01c38ac6282ae8280cd8169e9548; a09a007233660a1a8191eda71554dc5d284bf9aa; e5473b508ceb0102034eb4a96fb7677618517bbe). - Navigation Framework and Card Navigation: Navigation3 updates, extraction of navigation fields and internal NavKeys, basic card navigation, deduplication in NavEntryMapper, and rename of CheckoutDisplayStrategy.DIALOG to FULL_SCREEN_DIALOG (commits include: ccdd22259e8233784cbd932f391da282ca01e164; 8ef65f248696eff9c4a1741f6bc2e058d5291358; 7422bd62bc369678770a3770274740bafb86431b; 5994f17ba4e8593441e7780b6670c71a41c68b34; 62f2a133477a2cc9551fe6245a6795933f9393b1; 7e59f5de78e6f511f862c2f51819dc6a42a75573). - Search Field Component and UI Composition: Created a reusable SearchField composable and integrated it into SearchableValuePicker (commits: 4eae29bc96379ca1666bfe32cfbe5b1cc8ecfbf7; 33842a0a6800f1c68441696985b8d01bd165e252). - UI Theming and Payment Methods UX: Updated active color for text fields to primary color; added UI state for payment methods with a dropdown above the payment component; introduced simple pre-selected and payment method list screens (commits: dd4737a22ee460bc2e57c92f3e351f118b70a4e5; ea9f3760e34f3193fc5538e29d25330c9b7e901d; 94ceb27c22ed317ad290ec2e473f34b87ad1a7cf; 725f5943e8f91540ea04af751bd8240f32a869d6; 85b27bee958a9e13199c16d617918e9c3161455c; bd6b9b16a0c24f7106678d78a5ed0d8b51fe8aaf). - Drop-in Scaffolding, Wiring, and UI Enhancements: Established drop-in scaffolding including an empty activity, base navigation, navigation keys, and bottom sheet support; wired drop-in into the example app and applied checkout theming; enabled compose and moved drop-in code to proper packages (commits include: ed02fd0941c06516c1a69800362513e576a6515a; 59514a5b0b61de3b35e1595236d64bc47b11680b; 35806b8ac60da9cb6765dd30c75f7a34019812aa; b5f33828f9a0e22047c12ab93fc12c8439625730; 5b23849863f1996335a61aae90f15004387dba1b; 084ec47162ab3dd839ab8c379046b1b35abf9dd0; ae4b042b852e6b0020f4cd67fdb150115c837620; 54be6d7e72e4ee6ab34ef83973b0cd2e243a7852; 0f251ba99b4a622d36ebcf7bffc35ccf838822ff; 0f251ba99b4a622d36ebcf7bffc35ccf838822ff). - CI/CD and Quality Improvements: Incremental ktlint, Gradle caching, improved Gradle config, and release/workflow automation; security hardening and public API refinements to ensure deterministic builds and smoother releases (commits: 65fa5a24990d0872240e9fe028cd6afc45add64c; 37cc9c029d0c90698b8bb82e5f42c0351033e9c2; 764d87df2a7f1741484c156e09409b27a78e8515; 3867e0aea681bed056e048304a9a64778f59083d; 1237fa9eb7be295c86413b15117d625e8b1ff384; e5d9c74f5bce99b6287fa9777c4b5dbca86e9a55; 7267c3b58d104bd85bb6f469f8c85d048d40d235; d47103c3e90dacccae48e05ca86726b72355c142; 7267c3b58d104bd85bb6f469f8c85d048d40d235; ...). - Bug fixes and stability: Back stack initialization reliability, locale/environment propagation fixes in drop-in root, and correct amount display on preselected screen; plus security fixes for workflow inputs and API exposure (commits: 69b6e9e14fc1a8b815783acc30f41537b88b7aeb; 56a86d083a3ee2bc15d7b7667b3d0b249809d953; c49d8b70666338ccbfdef4f718edd911b921c6f0; 672ff04ced4a6c0742c3e3a1139f06d5b4555958; 15a8bd13d03e6b2e6d909e969923f9a3cb4ce394; bb86ce3edc3fec3009945728b0ab74d0ff1bd0d5; 27e87f1d601fcb3b4841d9a734e46d7981b2c245; 56a86d... etc).

October 2025

82 Commits • 19 Features

Oct 1, 2025

October 2025 — Adyen/adyen-android: Consolidated checkout and code-quality tooling into a scalable, plugin-based architecture, delivering business-ready checkout capabilities across modules while strengthening release processes and build hygiene.

September 2025

34 Commits • 11 Features

Sep 1, 2025

September 2025 monthly summary for Adyen Android. Focused on strengthening component state management, UX rigor for inputs, API stability, and platform integration. Delivered robust text input state handling, improved focus and text update flows, and centralized loading management, with accompanying API surface enhancements and essential bug fixes.

August 2025

40 Commits • 12 Features

Aug 1, 2025

August 2025 monthly summary for Adyen/adyen-android focused on delivering UX improvements, robust CI/CD governance, and stateful UI architecture, with concrete business value in faster, safer releases and a clearer API surface for partners.

July 2025

82 Commits • 32 Features

Jul 1, 2025

July 2025 — Adyen Android (Adyen/adyen-android) delivered key checkout improvements focused on reliability, modularity, and design-system consistency. Features delivered include: 1) Card expiry date handling improvements with MM/yy reuse, 4-digit ExpiryDate conversion, and enhanced tests; 2) Stepper UI using ConstraintLayout Compose with a dedicated connector composable and updated release notes; 3) UI design system standardization with standardized dimensions across composables and cleanup of hard-coded paddings/margins; 4) MBWay module migration and Core setup enabling modular deployment, dependency alignment, and streamlined configuration; 5) Checkout/API evolution including isSubmitButtonVisible exposure, suspend-capable callbacks, and public API spec updates. These deliverables improve payment reliability, developer experience, and time-to-market for new payment methods.

June 2025

41 Commits • 20 Features

Jun 1, 2025

June 2025 monthly summary for Adyen Android. Focused on API/build-system modernization, payment UI polish, and code quality improvements that enable faster onboarding, more stable builds, and improved user experience in payment flows. What was delivered (key features and improvements): - Public API surface updates and verification metadata: Updated public API specs and dumps; updated verification-metadata.xml to reflect latest API surface. - Build system modernization: Migrated Gradle plugin notations to version catalogs to simplify dependency management and improve maintainability. - V6 integration scaffolding: Set up v6 example integration (activity, entry, and toolbar) to accelerate onboarding of the new version. - Payment UI polish: Replaced temporary PayButton with actual implementation; enhanced ValuePickerField with ripple interaction and documentation; introduced country code picker with a dedicated dialog and ValuePickerField integration. - Core and quality improvements: Refactored v5 core into a separate core.old package, extracted full-screen dialog into its own composable, and addressed expiry-date handling improvements with string-based logic and tests to improve reliability. Impact and business value: - Clear API surface and metadata alignment reduces downstream integration risk and speeds partner adoption. - Build reliability and developer velocity increased through Gradle version catalogs migration. - Faster on-boarding for new V6 integration and clearer payment UI flows improve time-to-value for merchants. - UI polish and accessibility improvements (ripples, detailed country code picker, and consistent MBWay styling) reduce support tickets and improve user trust. - Architectural cleanup and better expiry date handling reduce maintenance cost and regression surface for payments. Technologies/skills demonstrated: - Kotlin/Jetpack Compose, Gradle, version catalogs, API tooling, UI/UX refinements, test coverage improvements, and codebase refactoring for better maintainability.

May 2025

24 Commits • 13 Features

May 1, 2025

May 2025: Delivered key platform improvements for Adyen Android, focusing on (1) Dokka v2 tooling and publishing enhancements across modules with a conventions plugin, root-module awareness, new Dokka publishing artifacts, and CI commands; (2) CI/Build system modernization including a dedicated CI Gradle task, larger CI runners, and centralized build logic via buildSrc; (3) UI/UX/design-system alignment through new switch composable, updated text styles, removal of underlined text fields, added button content padding, and a trailing icon layout fix; (4) Public API and sample app stabilization with updated API specs, Streamlined example app refactor, plus improved drop-in navigation behavior and focus management; (5) Code quality and stability improvements addressing regression fixes and build-time warnings to reduce production risk.

April 2025

47 Commits • 11 Features

Apr 1, 2025

April 2025 (2025-04) monthly summary for Adyen/adyen-android focusing on delivering measurable business value through analytics, UI consistency, and build reliability. Key features shipped include card scanning analytics tracking with events for scan start, results, availability, and display, plus unit tests to validate analytics behavior. A new UI module setup and theming baseline established, including base theme structure, default colors, text styles, element defaults, and Compose/Kotlin updates, enabling faster, more consistent UI development. The UI Theme and Styling Framework provides a cohesive base theme, color mapping, text styles, and button variants with previews for both light and dark modes. API surface stabilization and dependency management updates were implemented to stabilize builds, accompanied by documentation updates. A test reliability improvement fixes mocking interactions to ensure deterministic unit tests. Additional improvements across the month include public API specs update, full country name display in address lookup, new text field input composable, autofocus improvements across multiple contexts, and a Gradle task to resolve all project dependencies. Overall, these efforts reduce risk, accelerate feature delivery, improve user experience, and enable more reliable analytics and builds.

March 2025

6 Commits • 2 Features

Mar 1, 2025

March 2025 monthly summary for Adyen/adyen-android. Focused on resilience, accessibility, localization, and robustness across checkout and 3DS workflows. Delivered features and fixes that reduce crash risk, improve user experience, and broaden international support while strengthening error reporting and analytics readiness.

February 2025

19 Commits • 3 Features

Feb 1, 2025

February 2025 monthly performance summary for the Adyen Android SDK. Focused on delivering robust payment UX, improving observability, and hardening error handling to support business goals of higher conversion, lower support cost, and stable integrations for merchants.

January 2025

8 Commits • 3 Features

Jan 1, 2025

January 2025 monthly performance summary for Adyen Android SDK (Adyen/adyen-android). Focused on delivering a public Card Scanning API, UX enhancements for Address Lookup, and streamlined release management. This period delivered tangible business value by enabling a broader card-scanning capability within checkout flows, improving address entry usability, and tightening versioning and release communication.

December 2024

8 Commits • 2 Features

Dec 1, 2024

December 2024 performance summary for the Adyen Android team. Focused on delivering a scalable release workflow, enabling future feature work, and stabilizing the user experience. Key improvements were implemented with attention to dependency visibility, modular architecture, and lifecycle correctness, all contributing to faster, safer releases and a smoother UX.

November 2024

26 Commits • 8 Features

Nov 1, 2024

November 2024 (Adyen/adyen-android) - Focused on strengthening release automation, code quality, and UI stability. Key deliveries include a version-name generation workflow integrated into the build/release pipeline (with release notes), lint enhancements for Dispatcher usage, documentation and migration improvements (notably Google Pay), centralization of IO dispatcher usage in the sample app, and UI/flow refinements for checkout loading state management. A critical bug fix addressed a NullPointerException on back navigation during address lookup. The month delivered faster, safer releases, clearer developer guidance, and more reliable user experiences.

October 2024

27 Commits • 13 Features

Oct 1, 2024

Month 2024-10: Delivered a robust set of Android payments features for Adyen/adyen-android with a strong focus on user experience, reliability, and API quality. Key enhancements include Google Pay integration UI enhancements with interaction blocking, styling capabilities (XML and programmatic), and tests for GooglePayComponentParamsMapper and DefaultGooglePayDelegate; centralized Google Pay availability checks with automatic button visibility; loading states for payment methods (Google Pay, Twint, iDeal) and instant payments; and UI consistency improvements via button theming based on app theme and coroutine-scoped PayButton initialization. Also relocated the Cash App loading indicator to ui-core and advanced localization support with translations. Additional groundwork covered public API quality (KDocs, API dump), release notes, API spec dumps, and code quality refinements (ResultState refactored to a data class, deprecation messages corrected). Overall impact: smoother checkout experiences, clearer user feedback during payment flows, easier localization, and a more maintainable, API-visible codebase.

September 2024

1 Commits • 1 Features

Sep 1, 2024

Monthly summary for 2024-09 (Adyen/adyen-android) Key features delivered: - Payment Process Flow Optimization: Removed a redundant method for enabling the submit button in the Google Pay delegate, streamlining the payment flow logic and reducing UI-state complexity. Major bugs fixed: - Build stabilization after rebase: Fixed build issues introduced during rebase (commit 02bd29ba48b585b31f997b8c6b54ff2027b27d0b), ensuring CI reliability and smoother integration with Google Pay. Overall impact and accomplishments: - Business value: Faster, more reliable payments with Google Pay; reduced risk of UI state issues; improved maintainability of the payment flow. Supports faster release cycles and more predictable integration into production. Technologies/skills demonstrated: - Android/Kotlin development, Google Pay integration, code refactoring, build/CI stability, Git-based collaboration and traceability.

June 2024

9 Commits • 2 Features

Jun 1, 2024

June 2024 performance summary for Adyen Android (Adyen/adyen-android). Delivered core Google Pay integration improvements and UI enhancements focused on reliability, maintainability, and business value. Key changes include migrating Google Pay integration to a flow-based architecture, deprecating legacy ActivityResultLauncher usage, moving PaymentsClient initialization to the constructor, and adding release notes documenting Google Pay launch and dependency updates. UI-level improvements added a Google Pay button in the drop-in, configurable submit button visibility, and a confirmed/submit flow to streamline user interactions. These changes reduce maintenance costs, enhance the checkout experience, and simplify future releases by aligning with flow-based patterns and up-to-date dependencies.

May 2024

5 Commits • 1 Features

May 1, 2024

Monthly summary for 2024-05 for Adyen/adyen-android focusing on business value and technical achievements. Key features delivered: Google Pay integration enhancements including coroutine support, a new wrapper view and fragment, a streamlined Google Pay flow, removal of deprecated activity result handling, and improved Compose UI state management. Major bugs fixed: addressed deprecation-related issues and stability across the Google Pay flow, including modernization of Android activity result patterns and UI state handling. Overall impact and accomplishments: improved integration reliability and developer onboarding for Google Pay on Android, faster time-to-market for partners, and a smoother checkout experience for end users. Technologies/skills demonstrated: Kotlin coroutines, Android Jetpack Compose, Google Pay API, wrapper view/fragment architecture, modern Android patterns, and commit-driven code quality improvements.

Activity

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Quality Metrics

Correctness92.6%
Maintainability91.4%
Architecture90.0%
Performance87.4%
AI Usage21.0%

Skills & Technologies

Programming Languages

BashGradleGroovyJavaKotlinMarkdownPROProguardPythonShell

Technical Skills

API DesignAPI DevelopmentAPI DocumentationAPI IntegrationAPI SpecificationAPI designAPI developmentAPI integrationAccessibilityAnalyticsAnalytics TrackingAndroid DevelopmentAndroid LintingAndroid developmentAsynchronous Programming

Repositories Contributed To

1 repo

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

Adyen/adyen-android

May 2024 Jan 2026
19 Months active

Languages Used

KotlinXMLJavaMarkdownBashGradleGroovyPython

Technical Skills

Android DevelopmentCoroutinesFragment ManagementJetpack ComposeKotlinMobile Payment Integration

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