48 CFR 4.101: 4.101 Contracting officer's signature.

Only contracting officers shall sign contracts on behalf of the United States. The contracting officer's name and official title shall be typed, stamped, or printed on the contract. The contracting officer normally signs the contract after it has been signed by the contractor. The contracting officer shall ensure that the signer(s) have authority to bind the contractor (see specific requirements in 4.102 of this subpart).