Matthew Cromer

Engineer turned product builder. I've built 0→1 products from factory floors to game platforms. Now building a 3D printing marketplace and tools for AI leverage.

Work

MAKE

A marketplace for 3D printed goods

Product Brain

LLM-powered PM coach and product knowledge graph

Blog

Thoughts, ideas, and things I'm up to.

MAKE ep. 2: What 20M Downloads Taught Me About What To BuildJan 2026The scraping -> LLM classification -> insight pipeline that powers my launch product decision making for MAKE.Using n8n and LLMs to Automate Your Job SearchJan 2026How I increased my AI leverage by an order of magnitude and reduced my weekly job search effort from hours to minutes.MAKE ep. 1: The Wrong ProblemNov 2025What happens when you build an elegant solution before understanding the problem.
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Product Toolkit

Frameworks and mental models for product thinking, whether you're transitioning into product, building your own thing, or working more effectively with PMs.

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Elsewhere

Github
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