The Pando aspen grove in autumn: white trunks under a gold canopy, Fishlake National Forest, Utah.

I turn messy operations into software that people run their businesses on.

I’ve been writing software since the Apple ][+. Now I do it with AI agents, and frankly, it’s the most fun I’ve ever had.

What I do

I learn an operation from the people who run it, then build the system they run it on.

I’ve done it for switch engineers at Siemens and Ericsson, a European aerial survey, construction estimators, a delivery fleet, and membership organizations. That last one was Accrisoft, which I co-founded, bootstrapped, and ran for twenty-two years, until it was acquired in 2023.

I build with agents every day. Coding is cooked, and I love it. What’s left is judgment, taste, product sense, and saying exactly what you want. I’ve had decades of practice. One rule in everything I ship: the model proposes, and deterministic code decides anything touching money or compliance.

I ship as one person what used to take a team. The home care platform below is the proof. At Accrisoft I did the other job too, leading a team that made really great software, and at Teamfront, after the acquisition, I led eight. I’m at my best leading a small team of strong people, or as the senior hands on something that matters.

I wrote an operating framework for coding agents: a fixed stack, security that says no unless it knows who’s asking, guardrails generated as code instead of advice, and a loop that feeds each project’s lessons back in. Two projects so far: a home builder’s operations platform, and the last version of this site, in a day. This one is the third.

How I build
Mark Zeitler

I take on a few engagements at a time: build it, lead the team that builds it, or come in as the senior person on something stuck. Contract, consulting, or full-time for the right company. I’m in Sarasota, Florida, open to remote work and to travel. If you’ve got a great project and great people: contact@pandoforge.com.

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Pando is one aspen in Utah that looks like a forest: one root system, many trunks. That’s it in the photograph at the top, in autumn.