In a ClaudeDevs video, Boris sat down with Spotify VP of Engineering Niklas Gustavsson for a discussion centered on AI-assisted software work at Spotify. Gustavsson states that Spotify ships "4,500 production deploys a day" and that "73% of PRs are now AI-assisted."
He also mentions keeping "5 to 10 Claude sessions" running in tmux, one per git worktree, with agents working in the background inside a "20M+ line monorepo." Gustavsson adds that he expected agents to struggle at that scale, but that it has "worked well."
Another part of the interview focuses on Spotify’s migration codemods, which Gustavsson says grew into "thousands of lines of edge cases." He claims the codebase has too much API surface for static rewrites to handle cleanly, and that early LLMs "barely did better." After adding a judge, he says PR success rose from "about 25%" to "80%."
Gustavsson also argues that verification is "the single most important thing" when agents are used, describing it as an area where many companies underinvest. According to his account, Spotify rebuilt test automation around verification so engineers can supervise agents instead of manually carrying out repetitive tasks.
Source: ClaudeDevs