A sample letter offering a job contingent upon the results of a background check or other criteria. Use this to formally offer a full-time position to your best candidate.Learn what to include in a job offer letter and use our ready made template. I am writing on behalf of name of your business , and I am pleased to offer you a position with our company as position title , beginning start date . An offer letter is a formal document sent to a candidate offering them a job at a company.