Résumé

IT Systems Engineer

callan-resume.sh

$ whoami

Platform and Infrastructure Engineer with 10 years of experience spanning

macOS endpoint management, cloud infrastructure, identity and access

management, and cybersecurity. Active AI adopter, building with Claude Code.


$ cat skills.txt

Endpoint

Jamf Pro, Jamf Protect, Apple Business Manager, zero-touch deployment

Identity

Okta, SAML/SCIM, SSO integrations, MFA, user lifecycle

Security

SIEM, EDR, email security, phishing defense, compliance

Scripting

Bash, PowerShell, Python

Infrastructure

AWS, Microsoft 365, Active Directory, networking

AI & Dev

Claude Code, Git/GitHub, JavaScript, HTML/CSS

How I got here

Growing up

It started early

Callan at age 7, using Kid Pix on a Mac
Kid Pix on a Mac, ~1998
Callan at age 14, installing Opera browser
Installing Opera, ~2005

My dad was an IT guy, and I grew up sharing his love of technology. I was making things in Kid Pix at seven, playing around in system preferences and exploring the filesystem. By fourteen I was installing Opera because I wanted to try something other than Internet Explorer. Technology was just always part of how I engaged with the world.

But I didn't go straight into IT. After college I became a kindergarten teacher—and I loved it. The patience and empathy I built in the classroom turned out to be one of my biggest assets in support.

2015 – 2017

Stumbling into it

I stumbled into my first desktop support job at a nonprofit in Cambridge. My manager didn't understand why I knew what I knew—but I'd been doing this my whole life. That role was where I first got hands-on with Active Directory, Jamf Pro, and all things enterprise IT.

I was new to working in an office. I followed what I was told, watched how things ran, and started filling in the gaps. I got involved with the Mac Admins community and began learning from people who'd been doing this at scale.

2017 – 2020

Finding my voice

I spent eight years at a financial services firm in New York. Early on I was learning how to operate in a corporate environment—observing, adapting, figuring out how things worked. Over time I developed stronger opinions about what good IT looks like: structured triage, self-service documentation, proactive maintenance instead of constant firefighting.

I started pushing for those changes—building a knowledgebase, running training sessions, making the case for better tooling. I learned how to advocate for the right approach and back it up with evidence.

2020 – 2025

Becoming a leader

Over eight years I built the Mac endpoint platform from scratch, stood up security monitoring, and mentored a junior hire. I hosted training sessions on macOS skills—someone learned keyboard shortcuts for copy and paste, others discovered Spotlight. I wrote monthly cybersecurity education newsletters for seven years straight. I stayed because I kept finding things to build, and left when I'd done everything I could.

Now

What I'm looking for

I'm in Austin now, building things with Claude Code and looking for my next role. I want to work somewhere that treats IT as a partner—where the goal is to enable people to do their work faster.

For the full details, find me on LinkedIn.

Certifications

  • Jamf Certified Admin — Jamf Protect (370)
  • Jamf Certified Admin — Jamf Pro (300)
  • Jamf Certified Technician (200)

Education

Bachelor of Arts

2012

Hampshire College — Amherst, MA

Additional

Active member of Mac Admins Slack community and regular JNUC conference attendee. Currently building personal web applications using Claude Code. Hands-on with Docker, Git/GitHub, Linux CLI, web development (JavaScript, TypeScript, HTML/CSS), and self-hosted infrastructure. Proficient with AI-assisted workflows and actively experimenting with LLM tools for automation, scripting, and development (including this website!).