// OPEN TO COLLABORATION · HOUSTON, TX

Hi, I'm
Marcelo
Zamorano

IT Systems & Network Engineer with 15+ years building and securing hybrid cloud infrastructure. I specialize in zero-trust networking, cloud identity, virtualization, and automation — and I love sharing the processes behind the work. If something resonates, let's build together.

// 01 — About

Who I Am

I'm a Systems and Network Administrator based in Houston, TX with a deep background in cloud identity, infrastructure security, and hands-on engineering across SMB and enterprise environments.

I believe infrastructure should be resilient, documented, and understood — not just running. Whether recovering mission-critical VMs after a power outage or migrating 100+ users to Office 365 with zero downtime, I treat every project as something worth owning end-to-end.

Currently expanding into solar PV system design (NABCEP certification in progress) and applying AI prompt engineering to streamline technical documentation and support workflows.

// Cloud & Identity
Azure AD / Entra ID
MFA & Conditional Access
Exchange Online
Microsoft Teams
// Networking & Security
Palo Alto / Sophos / Meraki
Twingate Zero-Trust
VLAN / SD-WAN
Splunk SIEM
// Virtualization & Systems
Proxmox / VMware / Hyper-V
Docker Containers
Windows Server 2012–2022
Debian Linux
// Automation & Tooling
PowerShell Scripting
Active Directory / GPO
Smartsheet / Agile
AI Prompt Engineering
// 02 — Experience

Where I've Worked

Systems & Network Administrator
Dec 2017 – Present
Terra Applied Systems · League City, TX  (Full-Time → Contract)
  • Designed and deployed Azure AD, MFA, Conditional Access, PIM, and SSO for a secure hybrid identity environment.
  • Replaced legacy VPN with Twingate zero-trust remote access, implemented via Docker containers on Proxmox.
  • Deployed Palo Alto firewalls, Meraki MX68, and Ubiquiti APs; configured site-to-site VPNs, VLANs, and content filtering.
  • Recovered 3 mission-critical VMs after a power outage and migrated them to a new server with zero data loss.
  • Set up Windows Server RDS for QuickBooks Enterprise 2024 with SFTP and automated scheduled backups.
  • Developed PowerShell scripts for Azure admin tasks and Office 365 maintenance automation.
  • Managed containerized services in Docker within Proxmox to isolate applications and optimize resource utilization.
Contract Engineer & Project Lead
2021 – 2024
Galperti INC · Quantum Capital · Brenntag Latin America
  • Led Galperti's legacy ERP migration to Infor as Project Manager and hands-on technical lead — coordinating teams in Houston and Italy for data integrity and operational continuity.
  • Designed factory-wide VLAN segmentation (Operator + Administrative VLANs) across multiple buildings where no standards previously existed.
  • Deployed and standardized industrial POS/PDC touch-screen terminals at scale with full ERP/Infor integration.
  • Implemented dual-homed NIC cards on factory POS computers to isolate machine control networks (OT) from corporate/internet networks (IT) — improving both security and operational reliability.
  • Led Office 365 and Google Workspace migrations for 100+ users across multiple organizations with minimal disruption.
  • Upgraded domain controllers from Windows Server 2012 R2 to 2022 and implemented security baselines.
  • Deployed Splunk SIEM with alerting and event correlation; CheckPoint browser/email protection; Veeam backups.
  • Redesigned network infrastructure: fiber/Cat6 rewiring, Sophos firewall, site-to-site VPN, and full WiFi overhaul.
// 03 — Currently Exploring

What I'm Working On

FOCUS_01

Solar PV System Design

Pursuing NABCEP PV Design Specialist Certification. Studying NEC code compliance, site analysis, array sizing, and full PV system modeling — bridging IT infrastructure expertise into renewable energy systems.

NABCEP NEC Compliance PV Modeling
FOCUS_02

Zero-Trust for SMBs

Designing and documenting zero-trust models for small and mid-size businesses using Twingate and Docker-based deployments. Building reusable architecture templates that smaller teams can actually implement and own.

Twingate Docker Proxmox
FOCUS_03

AI-Augmented IT Operations

Applying prompt engineering to accelerate technical documentation, incident response writeups, and client reporting. Exploring how AI tools reduce time-to-resolution in complex support and migration scenarios.

Claude ChatGPT Documentation
// 04 — Ideas & Process

How I Think &
How I Work

01

Own It End-to-End

I don't hand off problems — I follow them through. Whether it's a VM recovery at 2am or a cross-continental ERP migration, I stay in the loop from diagnosis to resolution to documentation. The best infrastructure work is invisible to users and fully legible to whoever comes next.

02

Document Everything, Assume Nothing

Every project I deliver includes network diagrams, VLAN maps, deployment standards, and runbooks. Good documentation is a form of respect — for future maintainers, for clients, and for yourself at 11pm troubleshooting something you built three years ago.

03

Security Is Architecture, Not an Add-On

Zero-trust, VLAN segmentation, immutable backups, and MFA aren't bolt-ons — they're decisions made at design time. I push to bake security into the foundation of every network and identity system I touch, not patch it in after something breaks.

04

Technology Should Transfer Knowledge

Every deployment includes user training and clear handoff documentation. I've trained teams on Teams, SharePoint, ERP workflows, and IT security. If the people using the system don't understand it, the project isn't done.

// 05 — Education & Certifications

Credentials

☀️

NABCEP PV Design Specialist

In Progress — Solar design, NEC code, array sizing, PV modeling

📋

Google Project Management

Professional Certificate · Coursera · 2025

🔐

Google Cybersecurity

Professional Certificate · Coursera · 2025

🌐

CCNA-Level Routing & Switching

NYU School of Continuing Education · 2003–2007

🛡️

CISSP Prep / UNIX / Perl

NYU School of Continuing Education · 2003–2007

🎓

A.S. Systems Analysis

Global Institute of Technology, NYC · Mainframe, DB2, CICS, COBOL

// 06 — Contact

Let's Work Together

I'm always open to interesting conversations, collaboration proposals, and new contract opportunities. If something I'm building or thinking about resonates with you — reach out. The best projects start with a simple message.