One Developer Is All You Need: Case Study of AI-Augmented One-Person Squad in Brownfield Enterprise

arXiv·high signal

First structured evidence on designing and evaluating a one-person AI-augmented squad in a regulated enterprise setting. The study examines how AI tools enable a single engineer to absorb roles previously distributed across a cross-functional squad, covering planning, implementation, testing, and deployment in a brownfield codebase. Provides a framework for evaluating when solo-plus-AI can replace traditional team structures.