I'm an engineer building AI in public — and a marketer who makes it pay.
I'm Brian MacDonald. Twenty years running marketing and lead-gen operations, the last few architecting AI systems that do the work — and I'm building all of it in the open. Follow the build, or put the same systems to work in your business.
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The Builders Brief
New guides and playbooks to your inbox as they publish. Direct advice, no spam.
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Playbooks and systems from the build, written as I ship them. Free.
Read →See Mavrick
The AI coworker I built end to end. It calls, qualifies, and books — in Slack.
See it →Work with me
A working session on your marketing and lead-gen operation. You leave with a plan you can run.
Details →I don't theorize about AI. I run it — in real marketing operations. Two decades in the trenches of lead generation, marketing operations, and team-building for founders and agencies. The last few years architecting AI systems that take the work bleeding your team's hours and hand it back as revenue — freeing your best people for the work only they can do.
I architected and shipped my own platform, Mavrick, end to end — an AI coworker that calls new leads in under 60 seconds, qualifies, books, and follows up, and runs marketing and lead-gen work natively in Slack. It's rocket fuel for a lead-gen operation: it clears the repetitive work off your team's plate so your people spend their hours where they actually move revenue. Living proof the kind of AI I build works in the wild — not in a slide deck. See Mavrick →
78% of buyers go with whoever responds first · median company takes 42 hours · only 7% hit the five-minute mark · ~9× swing on speed alone.
One example — speed to lead. Every operation has a dozen more. Finding yours is the job.