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Carlos Díaz

PROFILE

Carlos Díaz

Over four months, Linkmetal18 contributed to Vizzuality/amazonia-360 and GlobalFishingWatch/frontend, building features such as widget-level screenshot capture, PDF report generation, and robust end-to-end testing. They improved visual validation by optimizing Playwright-based screenshot workflows and stabilized font rendering across environments. For PDF exports, they refactored rendering pipelines and enhanced layout consistency using React and Next.js. On GlobalFishingWatch/frontend, they migrated E2E tests to Playwright, upgraded infrastructure to Vitest, and expanded automated coverage for critical flows. Their work, primarily in JavaScript and TypeScript, focused on performance, reliability, and maintainability, demonstrating depth in test automation, UI validation, and cross-environment consistency.

Overall Statistics

Feature vs Bugs

89%Features

Repository Contributions

23Total
Bugs
1
Commits
23
Features
8
Lines of code
5,635
Activity Months4

Work History

January 2026

12 Commits • 4 Features

Jan 1, 2026

Month: 2026-01 | GlobalFishingWatch/frontend Overview: In January 2026, focused on hardening frontend test quality, reliability, and performance. Delivered enhancements to the Timebar testing suite, stabilized end-to-end testing with Playwright, cleaned up non-essential console noise, and broadened automated test coverage for critical flows (login, map interactions, vessel profile). These efforts improved CI stability, reduced flaky tests, and accelerated feedback for UI changes, driving more dependable releases.

December 2025

7 Commits • 2 Features

Dec 1, 2025

December 2025: Strengthened quality engineering for GlobalFishingWatch/frontend by overhauling the E2E testing framework to Playwright and upgrading test infrastructure to Vitest, delivering scalable, reliable test coverage for critical user flows and improved CI speed. Reorganized the E2E test project structure and streamlined workspace configuration to support future test expansion.

October 2025

1 Commits • 1 Features

Oct 1, 2025

October 2025: Delivered a foundational PDF reporting capability for Vizzuality/amazonia-360, enabling automated, publication-ready documents that combine geospatial context with topic-specific insights. Refactored the rendering pipeline to support PDF output, and introduced layout and header containers to ensure consistent formatting across reports. Adjusted map controls and indicator displays to render accurately in exported PDFs, enabling reliable offline sharing with stakeholders. This work lays the groundwork for scalable, template-driven reporting and strengthens the product's value for clients requiring distributable summaries of geographic insights.

September 2025

3 Commits • 1 Features

Sep 1, 2025

In 2025-09, the focus was on speeding up and stabilizing visual validation for Vizzuality/amazonia-360. Delivered widget-level webshot capture with a dedicated container and performance optimizations, enabling per-widget screenshots and ~50% faster screenshot generation through networkidle navigation and removal of fixed delays. Fixed Playwright font rendering stability by disabling subpixel positioning, addressing cross-environment inconsistencies in visual tests. These changes improve CI feedback, reduce flaky UI tests, and enhance per-widget regression coverage for more reliable UI validation. Technologies demonstrated include Playwright-based test automation, performance tuning, and containerized widget rendering for scalable visual checks.

Activity

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Quality Metrics

Correctness87.8%
Maintainability85.2%
Architecture84.4%
Performance84.0%
AI Usage20.0%

Skills & Technologies

Programming Languages

CSSJSONJavaScriptTypeScriptplaintext

Technical Skills

API IntegrationBackend DevelopmentBrowser AutomationCI/CDComponent DevelopmentCypressDevOpsFront-end DevelopmentFrontend DevelopmentFull Stack DevelopmentInternationalization (i18n)JavaScriptNext.jsNode.jsPDF Generation

Repositories Contributed To

2 repos

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

GlobalFishingWatch/frontend

Dec 2025 Jan 2026
2 Months active

Languages Used

JSONJavaScriptTypeScriptplaintext

Technical Skills

CypressDevOpsNode.jsPlaywrightReactVite

Vizzuality/amazonia-360

Sep 2025 Oct 2025
2 Months active

Languages Used

CSSJavaScriptTypeScript

Technical Skills

API IntegrationBackend DevelopmentBrowser AutomationComponent DevelopmentFront-end DevelopmentFull Stack Development

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