Karo Zieminski

Substack Bestseller helping 12K+ AI enthusiasts, founders, engineers, and product leaders become AI-native builders. 42% open rate. Previous deep-dives: Anthropic, Perplexity, Suno. I run Product with Attitude — one of Substack's most engaged AI & vibe coding communities.

Newsletter & Community

Weekly deep dives on AI tools, product building, and vibe coding. Read by 15K founders, engineers, thinkers, and product leaders. 42% open rate, 3.2% CTR, with readers across 127 countries (US/UK/CA-heavy).

Weekly

What to expect

If your request is approved, expect exceptionally high engagement, that far exceeds Substack norms.

20%+ engagement rate on posts (people don’t just skim: they comment, share, and debate).
Thousands of daily impressions across Substack alone,
Readers in 127 countries, mostly tech-savvy, early adopters, and product buyers.

What do I need from you?

Must have:

A clear list of expected outcomes
the ability to test the product as both a free and premium user (e.g. via a temporary discount code).

Optional:

Brands who reward my readers with unique perks see higher engagement and stronger results.
Enjoy a 50% discount when you share my writing with your audience; just commit to reposting on your own site/blog.

How it works: collaboration flow

Step 1: Please send your request. If needed, I’ll reach out with clarifying questions.

Step 2: I review and either approve or recommend a better-suited creator.
Step 3: If approved, you'll receive a booking confirmation.
Step 4: Once booked, you provide relevant assets, I complete the testing and send you a draft.

Step 5: The blog post goes live on the agreed date, and I share the engagement stats.

About me

👋 Hey, I’m Karo

AI Product Manager and Substack Bestseller.

I run a fast-growing newsletter and community for thousands of builders, founders, and thinkers exploring the wild frontiers of AI, product, design and vibecoding.

Previously Featured (Sponsored or editorial)