---
name: duo-culture
description: Build the team the way Duolingo built theirs — the Green Machine operating model, talent density over headcount, candor protocol ("focus on what, not who"), hire-slow / fire-fast, and the "no process unless it makes decisions better" rule. Use when the user is hiring, defining team rituals, debating remote vs. office, choosing a feedback model, or installing an operating system in a team that has none. Source the Duolingo Handbook (Raise the Bar + Green Machine).
license: MIT
metadata:
  author: HKTITAN
  version: "1.0.0"
  graph: true
---

# Duolingo Culture — Map of Content

The handbook treats culture as load-bearing, not aspirational. Two principles (*Raise the Bar*, *Ship It*) and one operating model (*The Green Machine*) describe how Duolingo decides who to hire, how to run a team, and when to add process. This skill packages the operating manual.

This skill is structured as a **graph**: scan the descriptions below, follow only the `[[wikilinks]]` you need.

## The operating model

- [[references/green-machine]] — the six-step build/measure/learn loop Duolingo runs the company on.
- [[references/clock-speed]] — minimizing the gap between steps; the company-wide tempo metric.

## Talent

- [[references/talent-density]] — "better a hole than a hire that lowers the bar."
- [[references/hire-slow-fire-fast]] — the protocol for both directions.
- [[references/candor-what-not-who]] — feedback rule that lets criticism survive at scale.
- [[references/interview-the-real-work]] — evaluate people in the medium the job uses, including on work they did not write.
- [[references/publish-the-evaluation-process]] — a secret format measures who already knew it, not who is better at the job.

## Ramping people

- [[references/simulate-the-high-stakes-ritual]] — onboard judgment-heavy roles with a low-stakes replica of your most demanding ritual.
- [[references/make-asking-cheap]] — a published stuck threshold, a mentor with no evaluative stake, and belonging that starts at signature.
- [[references/ramp-senior-leaders-out-loud]] — say the onboarding number, and walk new leaders down through the layers they will later redesign.
- [[references/managers-keep-practising-the-craft]] — budget craft time every cycle, or reviews decay into proxy signals.

## Process

- [[references/no-process-without-purpose]] — process is a tax; only add it if it improves decisions.
- [[references/ownership-clarity-culture]] — every critical task has one owner; this is a culture rule, not a project-management rule.
- [[references/async-vs-meetings]] — when to converge in real time and when to commit to writing.
- [[references/audit-the-inherited-standard]] — an inherited rule records who held authority when it was written, not which option was better.
- [[references/conventions-ratify-practice]] — bodies codify what practitioners already do; win working practice before you write the rule.

## Identity

- [[references/quirky-by-design]] — the office, the rituals, the brand voice as recruiting and retention tools.
- [[references/dogfooding-culture]] — the cultural commitment behind the product practice.

## Sibling skills

- [[../duo-product/SKILL]] — *Raise the Bar* and *Ship It* are the same principles seen from the product side.
- [[../duo-experimentation/SKILL]] — experimentation only survives in a culture where being wrong is cheap.
- [[../duo-voice/SKILL]] — the brand voice is a hiring filter; the people who write it are the people who get the joke.

## Sources

- Duolingo Handbook (2025), Principles #2 *Raise the Bar*, #3 *Ship It*, and *The Green Machine*