I’m not a software engineer, but I’ve been running an experiment to see whether agentic development could produce a useful prototype on top of an existing SaaS codebase. The codebase is 1M+ lines, 15 years old, hosted on Azure, and primarily written in C# and React. The prototype needs to be available for customer testing in September. No developers were available to work on it full-time, although I could occasionally get help with specific technical issues. An engineer will evaluate the impleme...