It's sickening that a white man doesn't have a chance at any of the big companies, unless he's a programming god. This makes white supremacy even more of a problem because the white people that are there, are some of the best ever.
In the 20 years I've been working in tech, I've seen countless candidates rejected because of "culture fit." Of those, the majority were women; but also black, Hispanic, and indigenous men. Only one was a white guy: he was overtly sexist towards every woman he encountered, including the HR recruiter.
Edit: oh, I forgot one. One white guy was slightly effeminate by north American standards, and wasn't considered after somebody made a comment to the effect of "I think it's weird when men wear scarves". I think he was French (or Québécois), and I wouldn't speculate about his sexuality