Emmanuel Estrella
Cybersecurity Specialist • IT Operations

Hi, I'm Emmanuel Estrella - I manage robust, secure IT infrastructure.

IT professional focused on engineering, server management, and data and security analysis. I keep systems online and secure.

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About

IT & Security Specialist with an active DoD Secret Clearance and a dual background in Computer Science and Cybersecurity. Blends military-grade operational discipline with technical expertise in network administration, threat detection, and risk management.

Projects

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Active Directory Implementation

Implemented a fully functional, local-based Active Directory environment using Windows Server.

Technologies Used:

  • Windows Server 2022
  • Windows 11 Pro
  • VMware Workstation Pro
  • Active Directory
  • PowerShell

Help Desk Ticketing System

Implemented a fully functional, cloud-based ticketing system (osTicket).

Technologies Used:

  • Microsoft Azure
  • Windows 11 Pro
  • IIS & PHP Manager
  • MySQL & HeidiSQL
  • osTicket

Home Lab: DNS Sinkhole

Built a custom dashboard to monitor home network, block ads, and automate routine tasks.

Technologies Used:

  • Raspberry Pi 5
  • SSH (Secure Shell)
  • Pi-hole & Unbound DNS
  • PowerShell/Bash

SIEM Implementation

Configured Wazuh SIEM for real-time threat detection and vulnerability monitoring.

Technologies Used:

  • VMware Workstation Pro
  • Ubuntu 24.04 LTS
  • Wazuh Manager/Agent
  • GitHub Integration

Policies & Standards

Implemented and maintained corporate policies and standards for IT operations and cybersecurity.

Documents:

  • Security Plan
  • Change Control Management
  • Least Privilege Policy
  • Session Termination Policy

PodsForSquads Web App

Co-developed a centralized podcast discovery platform with collaborative playlists.

Technologies Used:

  • HTML/CSS/JavaScript
  • Google Firebase
  • ListenNotes API
  • Git/GitHub

Certifications

CompTIA Security+

Issued by: CompTIA

Earned: November 2025

CompTIA AI Essentials

Issued by: CompTIA

Earned: November 2025

ISC2 Candidate

Issued by: ISC2

Earned: December 2025

Certified in Cybersecurity (CC)

Issued by: ISC2

Earned: January 2026

Skills

Networking & Security

WiresharkTCP/IPDNSDHCPVPNVLANsFirewallsWazuh

Cloud & Infrastructure

Microsoft AzureVMwareWindows Server 2019Windows 10/11Linux (Ubuntu)Active Directory

Development & Scripting

PythonPowerShellBashC#C++Java/JavaScriptHTML/CSS

Tools & Platforms

JiraGitHubVisioFirebaseMySQLosTicketMS Office

Contact

Email: emmanuel098estrella@gmail.com

Location: Orlando, Florida

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