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Marcin Arciszewski

PROFILE

Marcin Arciszewski

Over six months, contributed to the govuk-one-login/mobile-android-ui and mobile-android-pipelines repositories by delivering ten features focused on UI consistency, accessibility, and security. Developed reusable UI patterns and enhanced error handling using Jetpack Compose and Kotlin, standardizing user experiences and improving accessibility for keyboard users. Integrated MASVS-based security lint checks into the Android build pipeline, enabling earlier detection of security issues in CI. Upgraded build tooling and implemented CI-based screenshot testing to strengthen test reliability and deployment safety. Improvements to Gradle build configuration and dependency management supported maintainability, while UI enhancements addressed asynchronous flows and ensured alignment with design-system standards.

Overall Statistics

Feature vs Bugs

91%Features

Repository Contributions

14Total
Bugs
1
Commits
14
Features
10
Lines of code
4,450
Activity Months6

Work History

January 2026

2 Commits • 2 Features

Jan 1, 2026

January 2026 monthly summary: Delivered security-focused Android enhancements and UX improvements across two repos, strengthening the product’s reliability and risk posture. Key features delivered include MASVS-based security lint checks integrated into the Android build pipeline and a loading state enhancement for ButtonTypeV2 in the Android UI. No major bugs reported as fixed this month, with focus on proactive quality and validation. Overall impact includes earlier security issue detection in CI, improved user experience during asynchronous flows, and clearer developer feedback loops. Technologies/skills demonstrated include MASVS security lint integration, Android build configuration, Kotlin/UI state management, conventional commits, and CI readiness.

October 2025

4 Commits • 2 Features

Oct 1, 2025

October 2025 performance summary: Delivered key UI architecture improvements for govuk-one-login/mobile-android-ui, migrating LeftAlignedScreen to Version 2 API, adding optional title to BulletedList, and introducing BulletedListV2 with a ListItem-based data model and improved vertical centering. Deprecated toBodyContent in favor of toBodyContentV2 and introduced testing and preview configurations to support safer rollout. In parallel, upgraded build tooling in govuk-one-login/mobile-android-pipelines by moving JaCoCo to 0.8.14 to improve code coverage analysis in Android pipelines. Overall, these efforts improve UI consistency, reduce legacy maintenance, increase test visibility, and strengthen deployment reliability, delivering measurable business value through faster, safer feature delivery and better quality gates.

July 2025

1 Commits • 1 Features

Jul 1, 2025

July 2025 monthly summary focusing on key accomplishments for the GovUK One Login Android UI team. The main focus this month was delivering accessibility enhancements to improve inclusivity and usability for keyboard users on the mobile UI.

May 2025

3 Commits • 2 Features

May 1, 2025

May 2025 (govuk-one-login/mobile-android-ui) delivered two feature enhancements to the LeftAlignedScreen, strengthening content fidelity and UI configurability while maintaining clean, extensible code. No major bugs were reported for this repository this month. Business value: improved content presentation and brand-consistent UI, enabling flexible heading and text styling to support marketing and accessibility requirements and accelerating future feature delivery.

April 2025

2 Commits • 2 Features

Apr 1, 2025

April 2025 monthly summary for govuk-one-login/mobile-android-ui: Focused on UI standardization and test reliability. Delivered the ErrorScreen component to standardize error handling with accessible, configurable content and actions, including refactoring and expanded test coverage. Enabled CI-based screenshot testing across all modules to improve test reliability, with fixes for LeftAlignedScreen and golden image naming after migration to stabilize test expectations. These efforts enhanced user experience during error states, improved accessibility parity, and increased confidence in UI regressions via CI. Overall, the work reduced maintenance risk and accelerates safe, frequent releases. Technologies/skills demonstrated include Android UI development, accessibility improvements, test automation, CI pipelines, and migration-related test fixes.

March 2025

2 Commits • 1 Features

Mar 1, 2025

Concise monthly summary for 2025-03 focusing on the govuk-one-login/mobile-android-ui repo. Highlights include delivery of a reusable UI pattern for error states, a visual consistency fix on the Loading Screen toolbar, and demonstrated design-system alignment and accessibility considerations that drive maintainability and a better user experience.

Activity

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Quality Metrics

Correctness97.8%
Maintainability95.0%
Architecture93.6%
Performance90.0%
AI Usage20.0%

Skills & Technologies

Programming Languages

GradleJavaKotlinTOML

Technical Skills

API DesignAccessibilityAccessibility TestingAndroid DevelopmentAndroid developmentBuild ConfigurationCI/CDDependency ManagementGradleGradle Build SystemIntegration TestingJetpack ComposeKotlinMobile DevelopmentScreenshot Testing

Repositories Contributed To

2 repos

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

govuk-one-login/mobile-android-ui

Mar 2025 Jan 2026
6 Months active

Languages Used

JavaKotlinGradle

Technical Skills

AccessibilityAndroid DevelopmentJetpack ComposeUI DevelopmentUI/UX DesignAccessibility Testing

govuk-one-login/mobile-android-pipelines

Oct 2025 Jan 2026
2 Months active

Languages Used

TOMLGradleKotlin

Technical Skills

Build ConfigurationDependency ManagementAndroid DevelopmentGradle Build SystemSecurity Best Practices