10,000 PRs a month is easy: How devex is evolving at PostHog

Shipping cadence is accelerating at PostHog. In the last 6 months, we've gone from shipping 1,441 PRs in January to 4,725 PRs in June while increasing engineering headcount by only 10%.

This is heading towards our north star for internal developer experience: "10,000 PRs a month is easy." We thought we would have until December to hit this number, but we might get there as early as September.

More PRs isn't a good thing in and of itself. It happens as a result of hiring talented, driven people and investing in agentic automation. Even if we don't hit these numbers, working toward our goals means making local dev, CI, and validation faster and better.

Here's how we've increased the volume of engineering work while still delivering reliable systems, and the changes we're making to make sure…