Bob belongs to a race that turns masculine when called with a name as it sounds when you read it left to right and feminine when you read it from right to left.

Bob seems to be using pronouns that are associated with both genders. Seems to be their thing. In any case, Bob seems like a fairly competent hacker and that's all that really matters here.

It's either a) a typo or b) this guy is following the American trend of pretending that your sex is just made up

Bob isn't into pronouns, but our limited human understanding demands them.