But they offend me with their way of thinking! Oh the humanity!

You're going to be asked that question. It's not even necessarily a rude question or a prelude to evangelism, it could just be part of a "getting to know you" conversation.

Remember that there are people who take the mere existence of atheism as a personal affront and challenge, which is why many atheists don't "out" themselves with that label. While I think it's commendable of various activist groups to work towards de-stigmatizing the word "atheist," a "getting to know you" conversation with new co-workers is not the place for you to do your fair share of that cultural work.

I suggest that you wait until you're established in the job, have been accepted as part of the team, and proven your value to the company, before you use the word "atheist" to describe yourself to your very religious co-workers. By then you should have a feel for who can be trusted to accept you, and who will recoil in horror as if you'd identified as a cannibal. Until then, a more neutral phrase like "You know, I'm just not very religious" might be the safer way to go.

Good luck...

You could just tell them that you have a policy of keeping your political and religious ideas private or out of the workplace. If that isn't respected you may wish to pad your resume as much as you can while looking for someplace less invasive of your privacy.

I hear ya! I messed up at my last job said I had no problem working on Sunday morning. I didn't last long after that!

Might want to brush up on what your state's employment laws are. Theoretically, no employer is supposed to be able to be discriminatory based on religion (or lack thereof).
Personally, I have always taken it straight to them when situations like that have arisen.
I tell them I'm an atheist and defy them to do anything about it, but that's me. As long as I'm doing my job, no one should have anything to say. If they do, I have no trouble telling them I'm not interested in anything except for work. Good luck!

Just say, bless you, but I'm good... lol

They can't legally do that, I do believe. If I were you, if they invite you to church or whatever, just say "Thank you for the offer" and leave it at that. Good luck with the new job!

I couldn't work in a place so infected / infested by religion.

Respectfully say you don't like to discuss your beliefs in the work place. But if it's a professional environment they won't say anything.

Unless you're working for a church, I don't think they can discriminate because of religion.

Congratulations on your job... I was going to suggest as a joke only, mind you... "I used to belong to a church but I was kicked out for vandalism, but is okay, they couldn't prove it in court"

Good luck on the new job. Sometimes they are just showing faith, and sometimes it's more serious and they try to "convert" you. One complaint I have about religion is the constant push for converts.

You have rights-hang in there. Good luck with new job.

Had someone try to get me to go to church with them they asked me every Sunday for about a year most times I had to invent a excuse occasionally back then work would save me from having to be creative with an excuse. One day they were trying to ask, my youngest brother told them you will have better luck dragging a dead horse a mile.

I hope you can put up with it, and once they find out that you're not religious that they don't try to push you out.