Senior engineering practitioners from major technology companies gathered for a multi-day retreat to confront the questions that matter most as AI transforms software development. The discussions covered more than twenty topics across breakout sessions, but the most significant insights didn’t emerge from one single session. Instead, they surfaced at various intersections; we found that the same concerns kept appearing in different conversations, framed by different people solving different problems. This publication synthesizes those cross-cutting themes, organized around the patterns that senior leaders need to understand and act on now. The retreat did not produce a single, unified vision of the future, but instead produced something more useful: a map of the fault lines where current practices are breaking and new ones are forming.