AI Reshapes Software Teams Into 5 Engineer Types as 40 PRs a Day Shift Bottlenecks
Updated
Updated · O'Reilly Media · Oct 26
AI Reshapes Software Teams Into 5 Engineer Types as 40 PRs a Day Shift Bottlenecks
3 articles · Updated · O'Reilly Media · Oct 26
Summary
Five recurring AI user modes are emerging on software teams—Soloist, Copy-Paster, Godot Waiter, Specialist and Tourist—as coding accelerates enough for one engineer to open 40 pull requests in a day.
That speed shifts the bottleneck from writing code to deciding why work should be done, with the report arguing roadmaps, issue framing and design reviews now matter more than ever.
The biggest risks differ by type: Soloists can flood teams with unaligned changes, Copy-Pasters can ship code they cannot explain, and Tourists can inflate adoption metrics without meaningful workflow use.
Historical evidence suggests speed alone can mislead: a 2025 METR study found 16 experienced developers took 19% longer with AI despite believing they were 20% faster, while a 2017 study found insecure copied code in 97.9% of sampled Stack Overflow snippets.
The report’s broader conclusion is that near-universal AI adoption in IT may reveal little by itself; the key divide is whether engineers still direct the tools or let the tools direct them.