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😎
Work ethic mode: on.
😎
Work ethic mode: on.
145 followers · 132 following

Achievements

Achievement: Pull Sharkx3Achievement: StarstruckAchievement: QuickdrawAchievement: YOLO

Achievements

Achievement: Pull Sharkx3Achievement: StarstruckAchievement: QuickdrawAchievement: YOLO

Highlights

  • Pro

Organizations

@zero-to-mastery

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Alejandroq12/README.md 
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julio=# \x
Expanded display is on.
julio=# SELECT * FROM developer WHERE github = 'Alejandroq12';
-[ RECORD 1 ]--+----------------------------------------------
name           | Julio Quezada
role           | Backend Developer
base           | El Salvador · UTC-6
shipping_since | 2023 · production systems at national scale
stack          | C# / .NET · PostgreSQL · TypeScript / React
toolbox        | Rails · Docker · Linux · Git
philosophy     | state is a query, not a fact you overwrite
discipline     | national level middle distance runner
languages      | Español · English · Français · 中文 (loading…)
homelab        | VLANs · virtualization · HackTheBox
reading        | Designing Data Intensive Applications (again)
now            | going deep on TypeScript
web            | quezadajulio.com
linkedin       | in/jqdeveloper
email          | julioquezada.dev@proton.me

julio=# -- everything important, I store append-only. including the career:

Find me

quezadajulio.com · LinkedIn · Writing: Explaining REST to kids · julioquezada.dev@proton.me

career_ledger: last appended 2026-07 · next row loading…

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  1. shell-csharp shell-csharp Public

    A POSIX style shell implemented from scratch in C# and .NET 9. Interactive REPL, builtin commands, external process execution, and shell parsing. Actively in development.

    C#

  2. quezadajulio.com quezadajulio.com Public

    My portfolio is where you can explore my work, get to know me as an engineer, and reach out to start a conversation. The site showcases real projects across backend and full stack development, with…

    CSS 23

  3. air-checker air-checker Public

    A real time air quality monitoring web app for cities across El Salvador. Built with React, Redux Toolkit, and tested with Jest.

    JavaScript 14

  4. polyglot-talk polyglot-talk Public

    A two page promotional site for a talk on language learning and cross cultural connection, built as a semantic HTML and CSS exercise with mobile first design. Deployed on GitHub Pages.

    CSS 21