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Mohammed Tahir

Writing

Notes from
building things.

Engineering, AI, product judgment and distribution.

12 Aug 20265 min readAIProduct

Feed for you

Ranked feeds pick winners from what already exists. The next version generates the item at request time, for one person, and never shows it again. That changes what you have to build.

22 Jul 2026

How to improve lead quality

Cheap leads are easy. Leads that close are a systems problem across the form, the offer, the targeting and the feedback you send back to the ad platform.

5 min readGrowthProduct

18 Jun 2026

I ran ads before I shipped products. It made me a better engineer.

Four years of paid acquisition across seven platforms taught me things about building software that I would not have learned by writing more software.

3 min readGrowthProduct

22 Jan 2026

Six months, one product, one exit

I built Portflix in July 2024 and sold it in December. Most of what I learned wasn't about building. It was about reading the shape of a market early enough to act on it.

4 min readFoundingProduct

14 Sept 2025

How I sent 100,000 emails for 8% of the quote

A hosted ESP wanted more for one campaign than the campaign was worth. The delivery itself costs almost nothing, so here's what you're actually paying for, and what it takes to build the rest yourself.

4 min readEngineeringOpen SourceEmail