LiveRamp Full Stack Software Developer interview questions

Applied to LiveRamp online. I participated in one introduction phone interview and two technical phone interviews. I then flew to San Francisco and stayed overnight. At the office, I went through two on site technical interviews and had lunch. In the end they did not give me an offer to work at the company.

I had an interesting experience with these guys. First, as has been noted, there's the unchanging online interview. I sent in my responses, and was quickly rejected in a one-line email the next day. No problem, let's move on. Imagine my surprise when tonight I get an email saying they'd gone over my online interview again and they'd like for me to speak with one of their engineers. Over the phone I attempt to figure out what LiveRamp does, and the engineer can't exactly explain it. Something about matching user requests to content to the tune of 4B requests per day. That's a lot of requests, and they're not Facebook, but allegedly it isn't advertising. He asks questions about how I'd build a system to log and count the number of times a user has viewed a piece of web content based on cookie ids, and I talk about caching systems and queues for a bit, and then he asked some questions about troubleshooting, but he just wouldn't give me any more information other than "how would you do this". For every problem he asked me to solve, "ask the client for more information first" just didn't seem like a viable answer. I'm human. I tried to make the guy laugh. Nothing. I tried to find out more about the culture of LiveRamp. Nothing. We wound down the interview, and I immediately sent the recruiter an email saying I'm not interested. No offer, and I don't think I'd accept one regardless.