The Departure Premium: What Mid-Level Engineering Turnover Is Really Costing Your Active Projects
When a seasoned mid-level engineer leaves, the visible costs—recruiting fees, onboarding time—are only the beginning. The deeper damage accumulates in broken mentorship chains, lost institutional knowledge, and the invisible drag imposed on every project that person touched. Understanding turnover as a project expense rather than an HR line item is the first step toward calculating what retention is actually worth.