I'd say 90% of our code is AI written today. Everyone in engineering (~30 people) is going full send on AI. We are still hand reviewing PRs and have quite strict standards, so this works to keep most of the AI slop out of the codebase. Early on most of that was humans being lazy and not reviewing their own PRs before opening them, but we've got better at that now. We still have a lot of legacy human slop ("tech debt") we are trying to get rid of, and the efficiency gains from AI let us spend time on that.

Stack is a monolith SaaS dashboard in Vue / Typescript on the frontend, Node.js on the backend, first built in 2019, with something like 5 different frontend state management technologies. Everyone is senior level.

We use Cursor and Opus 4.6 mainly, and are trying to figure out a more agentic process so we can work on multiple tasks in parallel. Right now we are still mainly prompting.