Interviewed at two big, well-known tech companies. Had done a lot of mobile dev work at the time, but really wanted to switch to connected hardware and told the recruiters.

Showed up for the first on-site interview. Guy walks in. Explains the actual first interviewer couldn't make it so he was a last-minute stand-in. Goes: "So, it says here you are intererested in mobile. That's good. My team is looking for someone like that."

I explained it was actually the other way round. What proceeded was an awkward hour of bullshit questions about train schedulers and sorting algorithms. Repeat five times that day. Every. Single. One.

Second company a few weeks later. Same thing. Except this time, 2/3 of the way through, a manager in HW group walks in. Grouses why he was asked to talk to someone, checks notes, about mobile. We had the greatest conversation after I set him straight. He wanted me to come back and do another loop just with his group. Except a week later, they announced a hiring freeze and I never heard back.

In retrospect, it was a good thing. I would not have been a good fit.