It's highly unlikely that you'd be able to secure a "Direct Entry Command" position onto a jet of any type in Canada. However, you should be able to find employment with one the hundereds of smaller regional, or charter airlines. The larger operators work on a "Seniority System" so you would have to put in your time as an F/O, S/O, etc, before moving to Command.
Converting the license is the easy part. Simply contact a Transport Canada licensing Inspector, and submit the required documents. You'll have to undertake a few written exams - ATPL, IFR, etc, and complete a flight test.
IM me, and I'll send you the contact details for one of the better TC license inspectors who can help you.
Cheers