As a self-employed individual it is possible for me to get a job in Canada?
A requirement for getting a work permit is to have the requisite experience. That experience must fall precisely within the requirements for the particular profession that you are applying under. Even if you gained that experience through self-employment you will generally be permitted to apply for a work-permit. That being said, you need to provide reliable documentation to prove you have the requisite experience. Working as a self-employed person may make this more difficult. The types of things that would be useful here would be original letters from clients describing the work carried out for the client, the duration of the work, among others.
Self-employed people can also apply under some of the entrepreneurial categories though most require significant net worth benchmarks to be established.