47 years old here... I haven't experienced it yet. I know it exists, though, as I personally know some older IT guys who have have difficulty even getting interviews. For me, I think there are several reasons why I haven't fallen victim to that. Not saying I'm immune, as I'm definitely in the age group where one might expect it. First, being female I'll never have the "gray beard" thing going. I do have some gray hair, which someone might notice if they look closely. Also I am in great shape (thanks CrossFit!) and there is definitely something to be said for being healthy and fit, which helps keep me young physically as well as mentally. I really think what we project to others is an important part of it. Also, I'm fairly immature and I like to joke and laugh a lot, so I fit in pretty well with teams where often I'm the only woman. Being a contractor, managers are looking for an experienced developer with specific skillsets who can jump in, learn quickly and get the job done, and not usually as concerned about the whole cultural aspect of it as they would with an FTE. I'm not looking to join a startup (been there, done that) but I love a fast paced environment and learning new things. So I'm not someone who will let my skills stagnate, or get complacent and stay in one place too long. Will this still be the case in 5, 10 years? It's something that I am very mindful of, and maybe I'll start to see some ageism as I get into my 50s. If so, I'll just have to figure out a way to deal with it.