AI is replacing junior developer tasks, and the lost training may cost businesses later

Researchers at Seoul National University interviewed 14 software engineers in South Korea about handing small coding jobs to AI tools instead of junior staff. Half were seniors who decide where work goes, and the rest were students about to enter a job market that has stopped hiring them. Korea is a useful test case: work-related AI use there reaches 51.8 percent, close to double the U.S. rate, and major technology firms have shut down open recruitment of junior developers.

One founder with more than twelve years as a developer said cutting junior staff had no impact on his business. Yet he credited his own career to early grunt work such as writing code as told, debugging daily and testing results. The researchers argue that these tasks were never given to juniors because they were valuable in themselves. They were given because doing them badly, then having a senior explain the mistakes, is how judgment is built. The AI tools have absorbed that mechanism.

A senior at a mid-sized game company described the practical consequence: code is now cheap to generate, but verifying it is expensive. If fewer people learn how to review and judge code, that verification skill may become harder to find over time. The source article is only an opening excerpt, so the full findings are not covered here.