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Dayifour/README.md

Sékou Dayifourou KEITA

Full-Stack Software Engineer | TypeScript & Backend Systems

I build scalable web applications and robust backend architectures. Focused on performance, type safety, and efficient developer workflows.


🌍 Open Source Contributions

I actively contribute to global tools, focusing on accessibility, core logic, and DX.

  • cloudflare logo cloudflare/vinext: Aligned Route Handler behaviors with Next.js standards, optimizing HTTP method handling and OPTIONS auto-responses.
  • rust logo iii-hq/iii (Core Logic): Engineered state and stream guard helpers within the motia-js framework. Added robust unit testing for event-driven architectures.
  • npm logo npmx.dev (A11y & UX): Refactored complex UI components to meet WAI-ARIA standards. Implemented roving tabindex and keyboard navigation.

🛠 Tech Stack

Languages & Frontend

Backend & Databases

DevOps & Tools


📈 Core Competencies

  • Architecture: Building event-driven microservices and RESTful APIs.
  • Performance: Optimizing Next.js applications for Core Web Vitals and SEO.
  • Reliability: Implementing strict TypeScript patterns and containerized deployments.

📫 Connect with me


Pinned Loading

  1. cloudflare/vinext cloudflare/vinext Public

    Vite plugin that reimplements the Next.js API surface — deploy anywhere

    TypeScript 7k 258

  2. iii-hq/iii iii-hq/iii Public

    iii (pronounced “three eye”) unifies your existing backend stack with a single engine and three primitives: Function, Trigger, and Worker.

    Rust 15.2k 1k

  3. npmx-dev/npmx.dev npmx-dev/npmx.dev Public

    a fast, modern browser for the npm registry

    TypeScript 2.8k 356

  4. video_downloader video_downloader Public

    Next.js web application for downloading YouTube videos by specifying the URL and desired quality, using yt-dlp to fetch download links through an intuitive interface.

    JavaScript 18 6

  5. smartSchool smartSchool Public

    Web platform for managing educational resources and tools, facilitating interaction between students, teachers, and administrators.

    TypeScript 4 2