Engineering

Engineering notes from live builds

How we build for the web: stack choices, performance, architecture and the trade-offs behind them, from the fivetwentyone team in Jakarta.

3 posts

engineeringfounder

The Development Documentation You Should Require (2026 Founder's Guide)

The development documentation a founder should require before a developer leaves or something breaks, and why each piece decides whether you own your product or just rent it.

September 15, 20268 min read

Vibe Coding

Are Vibe-Coded Websites Bad? An Honest Answer for Founders

A vibe-coded website is fine for a prototype and a liability as your real site. Where it works, the security and SEO risks when it goes live, and how to keep the speed.

September 14, 20269 min

EngineeringSearch

Picking a tech stack that is built to be found

Your framework choice quietly decides how well you can rank and get cited. Here is how to choose with search in mind.

May 21, 202610 min