Me. Rev. Stat. tit. 5, § 1743-B

On projects for the design of buildings, the State and all political subdivisions thereof may select, without prejudice and on an equal basis, a prime professional who may be either an engineer or an architect. The professional so retained for a project shall perform only those services for which the professional is competent and shall utilize the services of other qualified professionals as required to provide a proper and complete professional service to the State or subdivision thereof consistent with applicable law.