About Colin

I help teams understand AI.

I’ve taught more than 35,000 product managers, designers, engineers, and operations professionals how AI systems work. Now I build diagramkit, an AI diagram builder for people who explain things.

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**Colin Matthews**Product manager, builder, teacher · Toronto

35,000+product managers, designers, engineers, and operations professionals trained

30+team training and advisory engagements

1 AI productbuilt, launched, and acquired

Students from

Built from the work, not the hype.

I still do the job.

I work with teams building AI inside real companies. diagramkit is grounded in what works there.

See how the parts fit.

diagramkit draws how the pieces of a system fit together, so a reader gets it at a glance.

Fix it yourself.

Every label is real text. Change a word on the canvas without asking the AI again.

diagramkit comes from building and teaching AI.

Read Tech for Product or follow me on LinkedIn.

Forward-deployed product manager

I work inside large companies to turn AI ideas into working products.

AI SaaS product acquired

I’ve built, launched, and sold an AI product.

30+ team engagements

I’ve helped companies train their teams and apply AI to their work.

Head of Education at Lenny’s Newsletter

I teach product managers, designers, engineers, and operations professionals how software and AI systems work.