craxker@nexuscloud:~$

Santiago Castellar Garcia

$ ./whoami
Infrastructure Builder · Cybersecurity Enthusiast · Linux Environment
View Projects GitHub
$

cat about.md

I'm a 16-year-old infrastructure builder and cybersecurity enthusiast based in Colombia. I run a homelab on Ubuntu with Docker Swarm, Tailscale, Traefik, and ESP32-based projects — learning by building real systems.

I study network security, ethical hacking, and Linux administration to understand how systems break and how to make them resilient.

My goal is to design complete, secure, and reliable infrastructure — from low-level embedded systems to container orchestration and network defense.

// WHAT I DO
  • > Homelab Architecture & Security Hardening
  • > Docker Swarm + Traefik Reverse Proxy
  • > ESP32 Embedded Projects
  • > Tailscale VPN & Network Mesh
  • > Linux Firewall Management
  • > Ethical Hacking & Penetration Testing
$

ls projects/

ESP32 PPP Bridge

↗

WiFi-to-Serial-PPP bridge for headless server access over USB. Built because my ThinkCentre has broken WiFi — an ESP32 and a USB cable solved it.

C++ ESP32 PPP systemd

Craxker Dotfiles

↗

Automated provisioning for Arch Linux + Hyprland. One command sets up packages, configs, dev environment, and services from a fresh install.

Shell Arch Linux Hyprland systemd

Casa Museo Pozon

↗

Community museum website preserving Afro-Caribbean memory through pedagogy. A living digital archive for a real institution in Cartagena.

Astro React Tailwind GSAP

NexusCloud Homelab

↗

Docker Swarm cluster with Traefik, Tailscale, Pi-hole, and full network hardening. A private infrastructure lab for learning and building.

Docker Traefik Tailscale UFW
$

cat skills.yaml

Linux

  • - Ubuntu
  • - Arch Linux
  • - Hyprland
  • - Bash
  • - systemd

Infrastructure

  • - Docker Swarm
  • - Traefik
  • - Tailscale
  • - UFW
  • - Pi-hole

Security

  • - Nmap
  • - Wireshark
  • - Metasploit
  • - Burp Suite
  • - OWASP Top 10

Languages

  • - C++
  • - Python
  • - JavaScript
  • - TypeScript
  • - HTML/CSS

Tools

  • - Git
  • - Neovim
  • - Tmux
  • - Lazygit
  • - GitHub CLI

Web

  • - Astro
  • - React
  • - Tailwind CSS
  • - Next.js
  • - Node.js
$

whoami

$ whoami

Santiago Castellar Garcia

Role:
  Infrastructure Builder

Interests:
  Cybersecurity
  Linux
  Networking
  Embedded Systems

Stack:
  Ubuntu 24.04 / Docker Swarm / Traefik
  Tailscale / UFW / Pi-hole
  ESP32 / C++ / Python
  Astro / React / Tailwind

Status:
  Building. Learning. Securing.
$

echo $CONTACT

Want to collaborate or have a project in mind? Reach out.

GitHub
@Santy401
Email
santiprocastellar7@gmail.com
Instagram
@santy.dev