Serial entrepreneur and technology leader. Fractional CTO, consulting, and advisory services in AI/ML, network architecture, and operational transformation.https://jmaclabs.com/https://jmaclabs.com/blog/the-productive-delay/https://jmaclabs.com/blog/the-productive-delay/Mactan airport, a delayed flight, three weeks of terrible wifi, and some thoughts on why airports have always felt like home.Sun, 05 Apr 2026 00:00:00 GMThttps://jmaclabs.com/blog/staying-hands-on-keeping-your-technical-edge/https://jmaclabs.com/blog/staying-hands-on-keeping-your-technical-edge/Why senior technology leaders should stay close enough to the work to judge tradeoffs well, ask better questions, and keep credibility with technical teams.Mon, 30 Mar 2026 00:00:00 GMThttps://jmaclabs.com/blog/what-mentors-get-from-mentoring/https://jmaclabs.com/blog/what-mentors-get-from-mentoring/Why mentorship keeps experienced leaders sharp: new ideas, generational perspective, customer insight, and a steady defense against rigidity.Wed, 18 Mar 2026 00:00:00 GMThttps://jmaclabs.com/blog/mentorship-and-coaching-growing-next-generation/https://jmaclabs.com/blog/mentorship-and-coaching-growing-next-generation/What effective mentorship in technology actually looks like — and what I've learned from doing it badly and eventually better over 30 years.Sun, 15 Mar 2026 00:00:00 GMThttps://jmaclabs.com/blog/pattern-recognition-knitting-coding-leadership/https://jmaclabs.com/blog/pattern-recognition-knitting-coding-leadership/As a crocher, knitter, and former yarn store owner, I discovered surprising parallels between knitting and software development and engineering — precision, debugging, pattern libraries, the cost of a single dropped stitch, and when to call in a specialist.Sat, 28 Feb 2026 00:00:00 GMThttps://jmaclabs.com/blog/retirement-world-travel-pneumonia/https://jmaclabs.com/blog/retirement-world-travel-pneumonia/I decided to retire and travel the world. Two days later, I got sick. This is what happened next.Thu, 12 Feb 2026 00:00:00 GMThttps://jmaclabs.com/blog/leaving-disney-reflection/https://jmaclabs.com/blog/leaving-disney-reflection/Last week was my last at The Walt Disney Company. It was a meaningful chapter.Full of complex systems, high creative standards, and people who cared about getting difficult things Tue, 03 Feb 2026 09:00:00 GMThttps://jmaclabs.com/blog/last-day-at-disney-studios/https://jmaclabs.com/blog/last-day-at-disney-studios/A short reflection on my final day at Disney Studios, gratitude for the people and work, and what comes next in semi-retirement.Sat, 31 Jan 2026 17:00:00 GMThttps://jmaclabs.com/blog/decisive-leadership/https://jmaclabs.com/blog/decisive-leadership/The Importance of Decisiveness in Leadership In any organization, from scrappy startups to large enterprises, making decisions is one of a leader's primary responsibilities. StFri, 26 Sep 2025 16:00:00 GMThttps://jmaclabs.com/blog/remotely-reach-a-duplicate-ip/https://jmaclabs.com/blog/remotely-reach-a-duplicate-ip/Duplicate IPs on the same network are one of those things that are never supposed to happen but they never seem to go away. Usually, they are pretty much a non-event, someone can ghttps://jmaclabs.com/blog/how-anycast-works/https://jmaclabs.com/blog/how-anycast-works/Do you have multiple servers with the same content or purpose? Do you want every client to always take the best path to the closest one? Anycast is for you!https://jmaclabs.com/blog/jmac-issues-with-geographical-dns/https://jmaclabs.com/blog/jmac-issues-with-geographical-dns/DNS, the Domain Name System, has become something of a Swiss Army Knife of networking and systems engineering. One of the tools in this set determines a user's location, and thhttps://jmaclabs.com/blog/jmac-learning-series/https://jmaclabs.com/blog/jmac-learning-series/I get asked to explain networking concepts on a fairly regular basis. In-person, on slack, by e-mail, on LinkedIn, etc. I'm (almost) always happy to answer them, usually by drahttps://jmaclabs.com/blog/useful-networking-scripts/https://jmaclabs.com/blog/useful-networking-scripts/Yeah, just realized I couldn't find scripts on my computer and I didn't remember what anything was named or what it did. More Added Since, checkout my GitHub Gists So, hereThu, 13 Sep 2018 05:30:00 GMThttps://jmaclabs.com/blog/github---forking-a-repository-youve-already-cloned/https://jmaclabs.com/blog/github---forking-a-repository-youve-already-cloned/I find that most of the time, when I am forking a respository to do a pull request, I've already cloned the respository. I don't do it often enough that I have it memorizedMon, 09 Jul 2018 01:26:00 GMThttps://jmaclabs.com/blog/gpg-symmetric-encryption-of-disk-image/https://jmaclabs.com/blog/gpg-symmetric-encryption-of-disk-image/I like to tinker with encryption, not because I have any real use-case for it, but because I find the entire subject enjoyable. Just thought I'd take a moment to share with youSat, 30 Jun 2018 02:20:00 GMThttps://jmaclabs.com/blog/first-post/https://jmaclabs.com/blog/first-post/This is definitely a first post. JMacLabs.com has had a lot of first posts since it was first registered in 1995. Most of the content hasn't followed it between iterations, andSat, 16 Jun 2018 18:02:00 GMT