what is a SIS? Do I have to report this as a conviction on a job application? Criminal Records, Expungement

Well, you were very fortunate.

A "SIS" is a suspended imposition of sentence.

Your SIS was NOT a conviction, rather it was your admission of guilt, allowing you to receive a deferred sort of sentence.

As long as you completed the terms of your sentence successfully, the SIS should absolve you from any criminal wrongdoing.

It should NOT show as a criminal conviction.

If someone runs a record check on you, the SIS you received should NOT be disclosed as a criminal conviction.

You had a great lawyer.

As a SIS is not treated like a criminal conviction, you should not be forced to disclose it on a job application.

Go forth, and sin no more!