As a teacher who works with many religious students, I don't feel that it is possible to be open about my atheism. I obviously don't discuss it with my students, because I think that would be inappropriate. I keep my classroom as secular as possible. But I don't feel I can be open about my atheism with my colleagues either. I don't friend them on Facebook out of fear they will find out.
But I have known other atheists who can be very open about it at work.
I'm just wondering if there are certain types of jobs/careers/industries that make it easier for an atheist to be open about that side of themselves?