## The Interview Arms Race Nobody Talks About

The Interview Arms Race Nobody Talks About Last spring I bombed a system design round at a mid-sized fintech company. Not because I didn't know distributed systems — I'd been building them for six years. I bombed it because the interviewer asked me to walk through a rate limiter design, and I started rambling about token buckets when they clearly wanted me to anchor on their specific use case first. Afterward, I found out three other candidates had nailed that exact framing. Two of them had used AI mock interview tools in the weeks before. That stung. And it got me thinking about who these tools are actually serving. What Candidates Are Actually Doing Now The honest answer is: a lot more than most interviewers realize. A year ago, AI-assisted interview prep meant running your resume through ChatGPT and asking it to spit out STAR-format answers. Clunky, generic, obviously templated. Most experienced interviewers could smell it in the first five minutes. Now it's different. Tools like Fi