Entry-level IT and systems-focused professional with hands-on experience across Windows, Linux, networking, automation, and security fundamentals. I build small, complete technical projects that emphasize reliability, clarity, and documentation.

My work focuses on practical system administration, automation, and security-aware tooling developed through structured labs and self-directed projects. Each repository is designed to be testable, well-documented, and grounded in real-world operational scenarios.

This GitHub highlights selected projects that demonstrate how I approach problem-solving across IT support, systems, and security-adjacent domains. Detailed explanations, design decisions, and lessons learned are documented in my portfolio.

Portfolio: https://yairmartinezcybersecurityportfolio.com
LinkedIn: https://www.linkedin.com/in/yair-martinez-939a17378

Hands-on Windows Server lab environment simulating real-world IT support and systems administration workflows, including identity management, Group Policy, and security hardening.

• Code: https://github.com/yairemartinez/active-directory-labs
• Project Write-Up: https://yairmartinezcybersecurityportfolio.com/?p=1278

Automation-focused shell script for filesystem auditing and backup routines, emphasizing operational safety, logging, and repeatable execution.

• Code: https://github.com/yairemartinez/bash-audit-backup-script
• Project Write-Up: https://yairmartinezcybersecurityportfolio.com/?p=1051

Python and Flask-based dashboard for organizing and reviewing Nmap scan data in a private lab environment, with asset tracking and historical comparison.

• Code: https://github.com/yairemartinez/nmap_dashboard
• Project Write-Up: https://yairmartinezcybersecurityportfolio.com/?p=809

Security automation project demonstrating IDS-driven detection and response concepts through log parsing, enrichment, and controlled firewall enforcement.

• Code: https://github.com/yairemartinez/ngfw-daemon
• Project Write-Up: https://yairmartinezcybersecurityportfolio.com/?p=1075

Python CLI utility focused on structured log processing, data enrichment via external APIs, and export of clean, analysis-ready outputs.

• Code: https://github.com/yairemartinez/Log-Parser-Weather-Enricher
• Project Write-Up: https://yairmartinezcybersecurityportfolio.com/?p=1034

• IT Support & Systems Administration (Windows, Active Directory, Group Policy)
• Networking Fundamentals & Troubleshooting
• Automation & Scripting (Python, Bash, PowerShell)
• Security Monitoring & Detection Fundamentals
• Linux Administration & Virtualized Lab Environments
• Cloud Fundamentals (Azure)

I prioritize simplicity, consistency, and clear documentation. Each project includes structured setup instructions, scoped objectives, and repeatable testing scenarios to make both the technical outcome and the process easy to understand.

The goal is not just to show what was built, but how it works and why design decisions were made.