I'm 36 and didn't start programming until I was 29. Tried to work with people on a project, got frustrated and decided to do it myself. I only did full time programming for a very short time, but I still write code for my job regularly and do side projects here and there for fun. I know full time engineers at big tech companies that didn't start programming until their late 30s. I'd say there isn't such a thing as a late bloomer because life isn't linear like society would like you to believe.