Junior engineers down 23%, senior engineers up 14% (Harvard study)

An Harvard study tracked 285,000 firms and 62 million, from 2015 to 2025 workers concluding that 1 senior + 3 juniors is now equivalent to 1 senior + Claude. The effect is strongest in wholesale and retail sectors, where junior hiring fell by about 40%.

This shift may have lasting effects on career mobility and wage inequality.

https://papers.ssrn.com/sol3/papers.cfm?abstract_id=5425555