The process involves waiting and paperwork. As PMM explained, the job first has to be advertised to prove no Canadian could be found to fill the role. They must then apply for a Labour Market Opinion. Processing takes several months. If the LMO is approved (not all are), you can then apply for a work permit. If your work permit is approved (not all are), you can then start working.
More information about the LMO process is here:
http://www.cic.gc.ca/english/work/employers/lmo-basics.asp
If Canadians with your qualifications can be easily found then chances are extremely high the LMO will be refused.