If you want to file married jointly, then the only way to do that is for your wife to apply for an ITIN at the minimum. She will need to come to US on a Visa, ideally a depended Visa to your work permit or if you are US citizen, then, you will need to file a consular processing Green Card for her thru' I-130 application.
Without this you cannot file jointly. If you cannot get her in US in time for your filing, then you may have no other option but to file as a single and then file an amendment once she comes to US and gets an ITIN or SSN.
