Yes, people outside Canada can use the Canada Job Bank to search for jobs open to international candidates. However, they may need employment authorization before beginning or continuing to work in Canada if they are not Canadian citizens or permanent residents.
Additionally, they should check if their qualifications are recognized, and if the type of work they want to do requires a professional license or certification. It is also important to note that they can only apply for jobs advertised by Canadian employers open to recruiting international candidates or temporary foreign workers.