I Gave My Codebase an AI Intern. Here's What Actually Happened.

The first time I used Claude to help me write a FastAPI endpoint, I thought — okay, this is it. This is the thing that changes everything. And it did. Just not in the way I expected. I'm a backend engineer. I build APIs, design schemas, think about concurrency, deploy things to EC2 and hope they don't die at 2am. I use Claude and Cursor every day now. Genuinely can't imagine going back. But somewhere in the last few months, I quietly picked up a second job nobody put in my offer letter. AI output reviewer. The Drunk Intern Problem Here's the most accurate description of working with AI tools I've come across recently — it's like being handed an incredibly fast, highly enthusiastic, slightly drunk intern. They ship fast. Like, embarrassingly fast. You give them a task and they're back in 3 seconds with something that looks completely reasonable. And that's exactly the problem. Because "looks completely reasonable" and "is actually correct" are two very different things. And the intern c