Most employers in Canada do criminal checks to prospective employees and Uber is no exception. Even if you have been fingerprinted by the police and the charge was later withdrawn, dismissed, peace bond, diversion, stayed, absolute discharge or conditional discharge, then your criminal check will come back with a red flag and could prevent you from getting a job.
Once you obtain a pardon, record suspension or file destruction then your criminal background check will be clear and you will be safe to work for Uber or any other employer without the worry of your arrests and convictions showing up.
Here is an example of what it looks like when Uber does a criminal check and there is a red flag. Since they do a basic background check it simply comes back to them as clear or not clear. If you were fingerprinted by the police, even if you were found not guilty, then the background check will show not clear.