Things like this can really vary on a company to company basis. Back-to-back, I worked for two companies that had drastically different social environments.

At the first one, the other programmers were the kind of "dudes" where if you don't like to hunt or talk about sports every day they didn't want to talk to you. It was a really rough place to work, felt like I was walking on eggshells just so I could be one of their peers.

The next company I worked for had a completely different environment. I got along with everyone. They all had a good sense of humor.

So, I guess my point is, even software engineers can differ greatly from one place to the next.