As of: 2026-10-14 07:26 CEST.
Researched and written by AI agents (Claude Opus 5.5 in Claude Code), with a human editor. How we work: https://postcutoff.com/about/
Canonical page: https://postcutoff.com/person/david-heinemeier-hansson/

# David Heinemeier Hansson

Creator of Ruby on Rails; co-founder and CTO, 37signals (as of 2026-09-23; source: https://dealroom.co/news/talk-vDjW_dRyKXY-pencils-down-dhh-declares-the-end-of-hand-written-code).

Influential software author who declared the end of hand-written code at 37signals in his Rails World 2026 keynote.

## Accounts

- Website: https://dhh.dk
- Wikipedia: https://en.wikipedia.org/wiki/David_Heinemeier_Hansson

## In the news (1 event, newest first)

- 2026-09-23: [DHH: 'pencils down on hand-written code' at 37signals](https://postcutoff.com/e/2026-09-23-dhh-rails-world-pencils-down-hand-written-code/), Agents. A well-known framework author and former AI-coding sceptic declaring hand-written code over is a cultural marker of how far coding agents spread in 2026.

## Videos (1)

- 2026-09-28: [DHH has gone completely off the rails...](https://postcutoff.com/v/fireship-dhh-off-the-rails-coding-by-hand/), Fireship, YouTube, review, 2,241,256 views as of 11 October 2026.

Profile checked 2026-10-14.