Always try to hide your age when it is a problem. You show/hide depending on the position you are applying. Once hired no one bothers. Then it depends on your capability to survive.

It may not be ONLY the HR manager who decides. It also depends upon the department manager. If your immediate boss/supervisor is younger than you or less qualified , you are a threat to him.

Even personality counts for example if you are 33 but you look only 27, it is a plus point.

Some candidates they look 33 but they are only 24 and they do not get hired even for entry positions.

Sometimes HR tries to count the number of years of experience and does guess work. Best thing is hide your age when not required.Be on the safe side.

This is common everywhere whether it is a CPA firm or an industry.