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Marcin Arciszewski

PROFILE

Marcin Arciszewski

Marcin Arciszewski developed and enhanced Android UI components for the govuk-one-login/mobile-android-ui repository, focusing on accessibility, maintainability, and design-system alignment. He introduced reusable patterns for error handling, standardized UI elements like LeftAlignedScreen, and improved keyboard accessibility for instructional content. Using Kotlin, Jetpack Compose, and Gradle, Marcin implemented configurable UI features, migrated APIs to more robust versions, and expanded automated testing with CI-based screenshot verification. He also upgraded build tooling in related pipelines to improve code coverage analysis. His work addressed both user experience and engineering quality, reducing maintenance risk and supporting faster, safer feature delivery across the codebase.

Overall Statistics

Feature vs Bugs

89%Features

Repository Contributions

12Total
Bugs
1
Commits
12
Features
8
Lines of code
4,344
Activity Months5

Work History

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

Correctness97.6%
Maintainability97.6%
Architecture95.8%
Performance91.6%
AI Usage20.0%

Skills & Technologies

Programming Languages

GradleJavaKotlinTOML

Technical Skills

API DesignAccessibilityAccessibility TestingAndroid DevelopmentBuild ConfigurationCI/CDDependency ManagementGradleIntegration TestingJetpack ComposeMobile DevelopmentScreenshot TestingTestingUI DevelopmentUI/UX Design

Repositories Contributed To

2 repos

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

govuk-one-login/mobile-android-ui

Mar 2025 Oct 2025
5 Months active

Languages Used

JavaKotlinGradle

Technical Skills

AccessibilityAndroid DevelopmentJetpack ComposeUI DevelopmentUI/UX DesignAccessibility Testing

govuk-one-login/mobile-android-pipelines

Oct 2025 Oct 2025
1 Month active

Languages Used

TOML

Technical Skills

Build ConfigurationDependency Management

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