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Creating, learning, improving
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Creating, learning, improving
4 followers · 3 following

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LeoneMarcos/README.md

Leone Marcos

Software Engineer focused on building responsive, resilient web applications with React and TypeScript.

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Featured Projects

Medication Inventory

Demo Showcase

A responsive medication management workspace designed for reliable local stock control, batch expiration tracking, and safe inventory movements.

Medication Inventory Preview

  • Problem: Track medication batches, expiration dates, and stock levels in a lightweight browser workspace.
  • Engineering: Built with React 19, TypeScript, and Tailwind CSS. Features atomic storage updates with quota-exceeded recovery, strict ISO date validation, and responsive desktop/mobile data tables.

AI News Aggregator

Demo Showcase

A focused artificial intelligence news reader that aggregates curated RSS sources into a unified, distraction-free daily feed.

AI News Aggregator Preview

  • Problem: Staying current on fast-moving AI developments is cluttered by noisy social feeds and disparate publication formats.
  • Engineering: Built with React 19, TypeScript, and Vite. Implements client-side RSS parsing with proxy fallback, instant search with keyboard shortcuts (Esc clear), accessible ARIA landmarks, and progressive loading of available sources.

Blackjack

Demo Showcase

A browser-based 21 card game featuring an automated dealer opponent, local multiplayer support, and session scoreboards.

Blackjack Preview

  • Problem: Delivering an authentic, smooth card-table experience in the browser with clear state transitions, accessible interaction, and predictable game logic.
  • Engineering: Built with React 19, TypeScript, Tailwind CSS, and Vitest. Features shuffled decks, tested scoring helpers, and an optional computer opponent, animated card reveals, and responsive layout across devices.

Core Technologies

  • Languages & Frameworks: TypeScript, JavaScript, React 19, Vite
  • Styling & Design Systems: Tailwind CSS, Responsive & Accessible UI
  • Testing & Quality: Vitest, Playwright, ESLint, Prettier
  • Containers & Delivery: Docker, Docker Compose, Nginx, Cloudflare Pages/Workers, GitHub Actions

Pinned Loading

  1. AI-News-Aggregator AI-News-Aggregator Public

    Modern AI news aggregator with curated RSS feeds, source selection and a lightweight glass interface.

    TypeScript 2 1

  2. blackjack blackjack Public

    Browser-based 21 card game with local multiplayer, BOT opponent, responsive UI, and animated gameplay.

    TypeScript

  3. medication-inventory medication-inventory Public

    Medication inventory app for stock control, expiration tracking, batch management and inventory status monitoring.

    TypeScript