Gabriel Marcelino
Apple endpoint engineering, automation, and practical IT solutions.
I'm Gabriel Marcelino, a senior Apple endpoint engineer specializing in Jamf, macOS/iOS management, automation, and secure device workflows. I build practical solutions that make technology more reliable, scalable, and easier to support. Currently exploring AI-augmented workflows for Jamf and MSP operations.
# workflow
Enrollment → policies → patching → compliance — documented, repeatable, and built for the people on the keyboard.
Jamf / MDM
Fleet truth, not drift
Automation
Less toil, clearer ops
GT Solution started as a simple idea: technology should solve problems, not create more of them. The name stands for Gabe Technology Solution — my personal approach to building practical, reliable, and user-friendly IT workflows.
Depth across the Apple stack, with an emphasis on what holds up in production.
Jamf, macOS, iOS, iPadOS, Apple Business Manager, enrollment workflows, patching, compliance, and endpoint troubleshooting.
Shell scripting, Python, Swift, AppleScript, SwiftDialog workflows, API-minded automation, and practical tools that reduce manual work.
FileVault, configuration profiles, PPPC, system extensions, endpoint security, compliance, and identity-adjacent workflows.
Public scripts, project write-ups, technical notes, and examples of real-world Apple platform engineering.
Explore projectsUtilities for people who live in hours, minutes, and MDM payloads — starting with the GT Time Calculator.
Live now
Simple time and hours calculation for consultants. Track work hours, calculate totals, and manage time entries efficiently. Built for people who need straightforward time tracking without the bloat.
Add hours and minutes, get accurate totals
Track what you worked on with each entry
Additional tools for Jamf administrators
Essential tools and resources for macOS administrators and Jamf engineers. Updated regularly with the latest and most useful resources.
Enterprise-grade mobile device management for Apple devices. Essential for managing macOS fleets.
Visit ResourceWeekly podcast covering macOS management, Jamf, and enterprise Apple administration.
Visit ResourceCommunity Slack workspace for MacAdmins to share knowledge, ask questions, and collaborate.
Visit ResourceOpen source software installation and management for macOS. Free alternative for software deployment.
Visit ResourceAutomated packaging of software for macOS deployment. Integrates with Munki and Jamf.
Visit ResourceOfficial Jamf community forum with thousands of MacAdmins sharing scripts, solutions, and best practices.
Visit ResourceThis section is updated regularly with new tools and resources
Content managed through WordPress - easy to update anytime
Notes and articles from my desk — Apple platform engineering, tooling, and lessons learned in the field.
A Mac admin team had 50 Jamf Pro policies scoped to All Managed Clients and narrowed with directory group Limitations. Here's how an AI-assisted Python script built on jamf-cli turned them into proper smart groups, and why the ‘aha' moment came from a CLI command I didn't know existed.
Read moreAfter participating in the Six Colors Apple in the Enterprise Report Card for several years, I was quoted for the first time. It became the inspiration I needed to finally start this blog.
Read moreWhether you're shaping a Jamf rollout, tightening security around devices, or need a second pair of eyes on automation — I'm happy to help. Consulting is available; quick questions are welcome via contact.