"in my experience most developers do their best work after about 6-8 months of starting a job at a new company, and that comes to an end after about 24-36 month

"in my experience most developers do their best work after about 6-8 months of starting a job at a new company, and that comes to an end after about 24-36 months of working at the same company. After that the vast majority of people just stagnate, get complacent, the job stops being interesting to them and they move on." Thanks for sharing this, I think you are probably "right" even though what you said is not an easy/popular thing to say. What is your observed sample size on this? Could you elaborate on how you see people stagnate, and why you think this might be?