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Jan Driescher

PROFILE

Jan Driescher

Over a three-month period, contributed to the sumup-oss/circuit-ui repository by expanding the icon set with new 16px SVG icons and implementing targeted UI stability improvements. Leveraged CSS and TypeScript to address cross-browser alignment issues, ensuring consistent layouts for Option and RowHeader components across both legacy and modern browsers. Applied React and front-end development skills to refine the useCollapsible hook, eliminating residual scroll space after collapsing and enhancing layout reliability. Each change was delivered with clear version control practices and collaborative code reviews, resulting in improved design-system consistency, reduced UI regressions, and a smoother user experience for downstream applications.

Overall Statistics

Feature vs Bugs

33%Features

Repository Contributions

3Total
Bugs
2
Commits
3
Features
1
Lines of code
82
Activity Months3

Work History

January 2026

1 Commits

Jan 1, 2026

January 2026 (2026-01) — Circuit UI: Focused, low-risk bug fix to stabilize the collapsible UI. Implemented a targeted fix for the useCollapsible hook to eliminate residual scroll space after collapsing, improving layout stability and visual consistency in collapsible sections. The change ships with a concise commit in sumup-oss/circuit-ui and demonstrates strong collaboration and code hygiene. Impact: - Reduced UI glitches and unexpected spacing in collapsed content, leading to a smoother user experience and lower risk of layout-related support tickets. - Demonstrated ability to deliver precise, low-risk fixes with clear traceability and ownership. Technologies/skills demonstrated: - React hooks and layout management (useCollapsible) - Precise, minimal-impact code changes and effective testing - Version control discipline and cross-team collaboration (Co-authored-by: Connor Bär)

October 2025

1 Commits

Oct 1, 2025

October 2025 monthly summary for sumup-oss/circuit-ui focused on stabilizing UI layouts across browsers. Delivered a cross-browser CSS alignment fix for Option and RowHeader, reducing layout inconsistencies in older browsers. The change is implemented via a single commit linked to CRMIOP-00 (fix mixed start support #3302): 42894f352c04c23a36d3dc01601a868b9005a94f. Impact: more reliable Option/RowHeader layouts across environments, fewer visual regressions in downstream apps, and improved developer confidence during UI integration. Technologies/skills demonstrated: CSS cross-browser compatibility, precise CSS refactoring, Git-based change traceability, and code review discipline.

September 2025

1 Commits • 1 Features

Sep 1, 2025

Concise monthly summary for 2025-09 focusing on business value and technical achievements for sumup-oss/circuit-ui.

Activity

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Quality Metrics

Correctness93.4%
Maintainability93.4%
Architecture86.6%
Performance86.6%
AI Usage26.6%

Skills & Technologies

Programming Languages

CSSSVGTypeScript

Technical Skills

CSSFront-end DevelopmentFrontend DevelopmentIconographyReactfront end development

Repositories Contributed To

1 repo

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

sumup-oss/circuit-ui

Sep 2025 Jan 2026
3 Months active

Languages Used

SVGCSSTypeScript

Technical Skills

Frontend DevelopmentIconographyCSSFront-end DevelopmentReactfront end development