Juniors and offshore teams will probably be the most severely impacted. If a senior dev is already breaking off smaller tightly scoped tasks and fixing up the results, that loop can be accomplished much more quickly by iterating with a LLM. Especially if you have to wait a business day for someone in India to even start on the task when a LLM is spitting out a similar quality PR in minutes.
Ironically a friend of mine noticed that the team in India they work with is now largely pushing AI-generated code... At that point you just need management to cut out the middleman.