I'm 23 and never, ever reveal that I have a wife and 2 sons until after an offer has been made. I suppose potential employers could find out fairly easily, but

I'm 23 and never, ever reveal that I have a wife and 2 sons until after an offer has been made. I suppose potential employers could find out fairly easily, but I know very well from personal experience that start ups do not like when I tell them about my family life, so I leave it off the table until I'm ready, despite it not inhibiting my ability to work just as hard and for as long as my single coworker counterparts. I guess it really depends on the size of the company, and it's really something you have to kind of feel out for yourself. Naturally I haven't really had this problem with large companies, only small teams.