How to Run Out of Senior Engineers Without Firing Any

Short summary

AI-assisted coding automates the entry-level tasks where junior engineers learn, draining the pipeline that produces senior engineers not through layoffs but through erosion of learning surfaces. Senior judgment is built through patterned response to repeated system failures over a decade—no shortcut exists. Organizations will face a severe senior engineer shortage in 5–7 years unless they intentionally preserve junior learning opportunities.

• •42–75% of code is now AI-generated or AI-assisted; juniors are losing the contained tasks that historically taught them
• •The 'responsibility perimeter' (what seniors answer for) never shrinks even as AI handles the typing
• •A decade-long pipeline producing senior judgment is quietly drained at the entry level, creating a cascading shortage

Generated with AI, which can make mistakes.