Does the "Member FDIC" need to appear in job employment ads for the bank?

If the job employment ad includes the insured institution's name, then YES.

"A advertisement - The term advertisement means a commercial message in any medium, that is designed to attract public attention or patronage to a product or business."

You would not put the "Member FDIC" if the ad also contained information relating to non-deposit products.

Hope this helps.

Is the job going to be "insured" ????

You are advertising for somebody to come work for you. You are not advertising the bank or any products. I would be more concerned with your requirements under EEO, affirmative action and government contractor requirements.