As a general rule of thumb: judgmental people exist regardless of hobby, profession, or city of residence. Software people aren't some mystical species immune

As a general rule of thumb: judgmental people exist regardless of hobby, profession, or city of residence. Software people aren't some mystical species immune to bad personality traits, but I'm confident that the majority (if not the vast majority) of them won't particularly care what you're wearing as long as you're not an asshole. I'm not in Silicon Valley, but in Seattle, and I don't dress the part of an engineer -- lots of Ralph Lauren button downs and 511s -- and yet nobody has revoked my license to write code yet. Wear what you want to wear.