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Marcos Luis Delgado

PROFILE

Marcos Luis Delgado

Over a two-month period, Manuel Luis developed and enhanced front-end features for Telefonica’s mistica-web and webview-bridge repositories. He improved desktop modal sheets by refining z-index layering, sticky elements, and scrolling behavior, and introduced automated screenshot tests to ensure UI consistency. In React and TypeScript, he added a “fake” prop to ButtonLink components, addressing accessibility by removing incorrect ARIA attributes and ensuring semantic HTML. For webview-bridge, he implemented a tagging feature for sheet items, updating data models and test coverage. His work focused on accessibility, UI reliability, and maintainable code, demonstrating depth in CSS, React component patterns, and TypeScript.

Overall Statistics

Feature vs Bugs

100%Features

Repository Contributions

4Total
Bugs
0
Commits
4
Features
3
Lines of code
69
Activity Months2

Work History

March 2026

1 Commits • 1 Features

Mar 1, 2026

Month: 2026-03 — Key focus: delivering the Sheet Tagging Feature for LIST and SINGLE_SELECTION sheets in Telefonica/webview-bridge. Introduced a tag property on SheetRowItem, updated bottom sheet tests, and prepared release/docs. No major bugs fixed this month; minor test enhancements and documentation improvements were performed. Business impact: improves data organization and UI tagging capabilities, enabling better user workflows and laying the groundwork for future analytics tagging. Technologies/skills demonstrated: TypeScript/data modeling, test coverage, release/docs updates, and cross-team collaboration.

June 2025

3 Commits • 2 Features

Jun 1, 2025

June 2025 monthly summary for Telefonica/mistica-web: Key features delivered include (1) Desktop Sheets Visual Fixes and Scrolling Behavior: resolved desktop modal sheets visual issues by adjusting z-index for close buttons, sticky titles, and sticky action buttons; updated body content styling to ensure proper scrolling on larger screens; added screenshot tests to lock in visuals. Commit: 2aafa78aa58cc7cf4cfd0ec150af432592fb3889. (2) ButtonLink Fake Button Support and Accessibility Enhancements: added a 'fake' prop to render ButtonLink as a fake button with accompanying type tests; removed incorrect role/aria attributes from fake buttons to fix accessibility and ensure semantic correctness. Commits: 2dd60ec28c91b6d7f0fa4dd66af27ba37111b566, f089329804396e6f3c21155e0617fdb0ddfeb5ec. Overall Summary of Impact: - Major UI improvements on desktop: visual consistency for modal sheets and reliable scrolling on large viewports. - Accessibility improvements: semantic ButtonLink rendering and removal of misleading ARIA attributes. - Added automated visual regression tests to prevent future UI drift. Technologies/Skills Demonstrated: - CSS/Layout and z-index management for complex modals - Accessibility best practices (ARIA roles, semantic HTML) - TypeScript/React component patterns and testing (prop-based rendering, type tests) - Automated visual regression testing (screenshot tests) for UI confidence Business Value: - More reliable desktop UI, reduced visual regressions, and improved accessibility, leading to faster QA cycles and better user experience for Mistica Web users.

Activity

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Quality Metrics

Correctness80.0%
Maintainability85.0%
Architecture75.0%
Performance85.0%
AI Usage20.0%

Skills & Technologies

Programming Languages

CSSJavaScriptReactTypeScript

Technical Skills

AccessibilityCSSFront-end DevelopmentReactReact ComponentsTypeScriptUI/UXfront end development

Repositories Contributed To

2 repos

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

Telefonica/mistica-web

Jun 2025 Jun 2025
1 Month active

Languages Used

CSSJavaScriptReactTypeScript

Technical Skills

AccessibilityCSSFront-end DevelopmentReactReact ComponentsTypeScript

Telefonica/webview-bridge

Mar 2026 Mar 2026
1 Month active

Languages Used

TypeScript

Technical Skills

TypeScriptfront end development