Teams that carve out ultra‑narrow job boxes often think they are sharpening expertise, but they are actually lengthening the hand‑off chain. A specialist who knows every nuance of a particular data format can ship flawless ingestion code, yet he rarely sees the downstream impact on user‑facing features, so the product manager must repeatedly request clarifications that never arrive until the next sprint.

The result is a cascade of “waiting on X” tickets that pile up, each one demanding a meeting to translate technical details into business language. In one recent project, a dozen engineers each owned a different slice of the recommendation stack; the product lead spent weeks gathering status updates instead of shaping the next release, and the market window slipped unnoticed.

The hidden driver is not lack of talent but the mismatch between decision rights and information flow: specialists hold the data that informs strategic choices but lack the authority to act on it, forcing the organization to route every insight through a bottleneck of coordination meetings. When the bottleneck grows, speed erodes faster than any loss of technical quality, and the team’s momentum stalls despite a flawless codebase.