DDI | Development Dimensions International | 120,741 followers on LinkedIn. From first-time managers to executives, we help organizations hire, promote & develop exceptional leaders globally. | Welcome to DDI on LinkedIn! We're a global leadership consulting firm that helps organizations hire, promote, and develop exceptional leaders. From first-time managers to C-suite executives, our commitment is to be by your side to help you tackle leadership challenges that impact your 480-minute workday.