I would expect in software companies being extrovert isn't a requirement. It's not a requirement were I work. Developers don't deal with customers directly, we

I would expect in software companies being extrovert isn't a requirement. It's not a requirement were I work. Developers don't deal with customers directly, we got support and to lesser degree management doing that. So I don't see why being an introvert would be bad. I guess in a web-agency you will work directly with customers, so it makes sense to hire people who are better at dealing with people (Office Space flashback).