How do I get a Canada work permit from Bangladesh?
In most cases a Canadian employer must first get a Labour Market Impact Assessment (LMIA) showing no Canadian was available, then give you a job offer. You then apply online for a work permit with the offer, the LMIA number, your experience letters and qualifications.
Some jobs are LMIA-exempt, for example under certain trade agreements or intra-company transfers. These are rare for applicants without an existing employer link.