I am not sure if this is a true story or a rumor or whatnot, but I would think anyone who has this many qualifications would be smart enough to know how to dress for an interview. Unless they are being cocky and entitled, thinking that the resume speaks for itself..and...well, the overly cocky ones usually don't work out longterm.
So...the pantyhose rule may not be too far off base.
Actually it was one of my BFFs. She was thinking about changing companies, so put out a few feelers. Went to one job interview with HR of a company they gave her the brush off. (She was dressed in her best tech geek clothes - BFF's best tech geek clothes would be dress pants, dress flats, a dress blouse and either a jacket or a sweater. She likely carried a messenger bag and wore no make-up). She had other feelers out and went to work for company B. Met up with someone she knew from the company she got the brush off from. He introduced her to his boss, the CFO. CFO wanted to know, jokingly, when she was coming to work for them. She said, innocently enough, that she had gone to an interview but that HR hadn't been interested in her. Her friend at the company later reported the outcome back to her, with the addendum that if she wanted to come to work for them she should call him. (She's quite happy where she at, I think, though.)
I actually had a lot more than this typed, then decided why pot stir? Truthfully, IT tech geeks, especially ones with highly specialized skills, are a bit different. Many are probably undiagnosed Aspies, but they're very good at what they do. In addition, in that field, there are a LOT of companies that consider business casual to be overdressed, even for an interview.
And I'm sure, if you're an HR professional, that you didn't mean to imply that I was lying or that my friends and I aren't good employees who don't work hard. As for being "cocky". That wasn't implied, that was stated, so I'll take the stance that you must be having a bad day and forgive you that comment. ((((hugs))))
At any rate, the point of my first post was: work hard, pick areas of expertise that have extreme shortages, and then you don't have to worry about things like whether or not you're wearing the right things to an interview!