Competitive Service Act of 2015
Authorizes an appointing authority (i.e., a federal agency appointing an individual to a position in the competitive service), other than the appointing authority that requested the certificate of eligibles for filling a position in the competitive service, to select an individual from that certificate for appointment to a position that is: (1) in the same occupational series as the position for which the certificate of eligibles was issued, and (2) at a similar grade level as the original position. Sets forth requirements relating to the sharing of certificates, notice, and selection of job applicants.