It looks like I am one of the few like you who think it is not true that '30 is considered "old"'. All my life, I have worked with experienced developers (calle

It looks like I am one of the few like you who think it is not true that '30 is considered "old"'. All my life, I have worked with experienced developers (called principal engineers, consultant engineers, distinguished engineers, etc.) who were between 28 years and 55 years old. Not even once they were regarded as "old". On the other hand, the more experienced the developer was, the more valued he or she was because of a strong correlation of higher productivity and wisdom. Can somene name companies where 30 or older is considered old?