Prior to a final decision the hiring manager may call for references from one or more former employers. This is always done in agreement with the applicant.
For specific positions, such as customer-focused positions, it may be relevant to review social media, e.g. LinkedIn and Facebook.
Likewise, for specific positions it might be required to display a criminal record.
Residence and work permit
Depending on the nature of the citizenship, an approved residence and work permit is required. We need to see documentation for this.