If you are a lawyer, you should line up tens of unhappy Coinbase customers and start a class action.

That doesn't sound like something you do while you're concentrating on bootstrapping your own project.

That's generally not an allowed behavior by lawyers in the first place. First they must be approached by someone else who has been wronged, or the lawyer themselves must approach another firm. Otherwise, he is still free to represent himself and only himself.

There is an application and short quiz here: https://www.coinbase.com/careers/6848?locale=en-US