Experience is not the number of years working. Experience is the amount of things known through willingness to learn new things and unlearn old irrelevant things.
You will find some senior staffs in an organisation expecting to be paid more because they have been working many more years. They feel slighted when younger staffs are paid more or being given higher position.
I always like to tell the technical man, those who use skill to work. There is a limit to how the job is done. Once the limit is reached, additional years doesn't make anymore difference to the knowledge of how the job is done.
Position must come from merits, results and not the number of years with the company.