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Sjimmie

PROFILE

Sjimmie

Sjimmie Bleeker developed and maintained the nl-design-system/rijkshuisstijl-community repository, focusing on building a robust Angular component library with Storybook integration to streamline UI development and ensure design consistency. Over seven months, Sjimmie delivered features such as configurable data summary components, flexible icon systems, and granular invalid-state controls for form inputs, addressing both usability and accessibility. The work involved deep use of Angular, TypeScript, and SCSS, with careful attention to documentation, testing, and cross-framework theming. Sjimmie’s engineering approach emphasized maintainability, visual regression testing, and developer experience, resulting in a scalable design system that supports rapid iteration and reliable releases.

Overall Statistics

Feature vs Bugs

91%Features

Repository Contributions

39Total
Bugs
2
Commits
39
Features
21
Lines of code
19,218
Activity Months7

Work History

October 2025

2 Commits • 2 Features

Oct 1, 2025

October 2025 performance summary focused on delivering precise invalid-state controls for form inputs across two design-system repositories, with improvements to UX, accessibility, and Storybook visualization. Key features delivered: - nl-design-system/utrecht: Added inputInvalid prop to FormFieldCheckbox in @utrecht/form-field-checkbox-react, allowing the invalid state to be applied directly to the checkbox input. Updates include props interface, rendering logic, documentation, and Storybook examples (commit bd5ea21981096194f02e93f9be25a505661643af). - nl-design-system/rijkshuisstijl-community: Introduced granular inputInvalid prop for targeted invalid state management on form inputs (e.g., FormFieldCheckboxOption, FormFieldRadio), enabling independent control of input validity and updated Storybook stories for proper visualization (commit 91a9ca755a58b191da22378d1e621a6f255322f4). - Additionally, fixed a duplicate invalid border visual issue in Storybook to improve consistency and reduce UI regressions (commit 91a9ca755a58b191da22378d1e621a6f255322f4).

September 2025

8 Commits • 4 Features

Sep 1, 2025

September 2025 monthly summary for nl-design-system/rijkshuisstijl-community focused on delivering UI/UX improvements aligned with the Utrecht Design System, stabilizing core components, and expanding the developer experience through Storybook and Chromatic integration. Key outcomes include improved accessibility and semantics, flexible icon projection, and a stronger visual regression workflow, enabling faster, more reliable releases with clear traceability to commits.

August 2025

2 Commits • 1 Features

Aug 1, 2025

August 2025 — Icon system restoration and standardization across the nl-design-system/rijkshuisstijl-community repo. Re-enabled missing icons across the UI (footer, form field error messages, and navigation bar) and standardized icon usage by updating Storybook to angular-tabler-icons. Added a default Angular Icon story to improve visibility and testability of the Icon component, with the example icon updated from X to a home icon.

July 2025

4 Commits • 2 Features

Jul 1, 2025

July 2025: Delivered key features and fixes across the nl-design-system repositories with a focus on data presentation, flexible icon integration, and accessibility. Implemented a DataSummary UI with DataSummary and DataSummaryItem components, along with tests and Storybook docs; improved semantics by wrapping action links in a dd tag. Refactored the Angular icon system into a generic icon wrapper, removing the Tabler icons dependency and enabling consumer-supplied icons. Corrected the textbox invalid state to trigger on user interaction using the user-invalid pseudo-class, improving UX and accessibility. These changes strengthen cross-repo design-system consistency, reduce coupling, and accelerate UI development with better testing and documentation.

June 2025

4 Commits • 2 Features

Jun 1, 2025

June 2025 achieved significant strides in compatibility, component delivery, and release hygiene for the rijkshuisstijl-community repository. Key outcomes include broader Angular 19.x compatibility with aligned devDependencies, and the introduction of the Data Summary component with Storybook documentation. Documentation and release notes were improved through accurate changesets and Storybook label updates, contributing to smoother onboarding and lower maintenance costs.

May 2025

12 Commits • 8 Features

May 1, 2025

May 2025 monthly summary for nl-design-system/rijkshuisstijl-community. Focused on stabilizing Angular packaging, expanding branding components, enhancing documentation, and aligning theming across Angular and React Storybooks. Delivered reliable Angular npm publishing, new media/branding components (Figure, FigureCaption, Logo), MDX docs in Storybook, a cross-framework theme switcher, a Boete Zoeken template, and a refactored Storybook setup with improved docs and source links. These changes improve release reliability, developer experience, and consistency across platforms, enabling faster feature delivery and stronger design-system governance.

April 2025

7 Commits • 2 Features

Apr 1, 2025

April 2025 monthly summary for nl-design-system/rijkshuisstijl-community. Delivered foundational Angular component library with Storybook integration, enabling rapid UI development and consistent design tokens across apps. Core components Paragraph and Link were implemented with tests and usage examples, plus initial cleanup to reduce overhead. Implemented typography and font usage enhancements, including font CSS import capability and SCSS organization, and refreshed documentation to guide developers on proper font usage. Completed codebase cleanup and build hygiene improvements, including removal of an unnecessary tsconfig and miscellaneous fixes to streamline maintenance. These efforts position the design system for broader adoption and faster iteration while reducing risks in new UI rollouts.

Activity

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Quality Metrics

Correctness90.2%
Maintainability90.6%
Architecture87.8%
Performance86.6%
AI Usage20.0%

Skills & Technologies

Programming Languages

CSSHTMLJavaScriptMarkdownSCSSTypeScriptYAML

Technical Skills

AngularBuild ToolsCI/CDCSSCSS StylingCSS ThemingChangelog ManagementChromaticCode RefactoringComponent DevelopmentComponent Library DevelopmentComponent Library ManagementComponent RefactoringConfiguration ManagementDependency Management

Repositories Contributed To

2 repos

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

nl-design-system/rijkshuisstijl-community

Apr 2025 Oct 2025
7 Months active

Languages Used

CSSHTMLJavaScriptMarkdownSCSSTypeScriptYAML

Technical Skills

AngularBuild ToolsCSSComponent DevelopmentConfiguration ManagementDocumentation

nl-design-system/utrecht

Jul 2025 Oct 2025
2 Months active

Languages Used

SCSSJavaScriptTypeScript

Technical Skills

CSSFront-end DevelopmentComponent DevelopmentFrontend DevelopmentReactStorybook

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