CTO-as-a-service consultancy

I am looking for a CTO-as-a-service consultancy for a specific software development project on a medium-term basis. Have launched an MVP and looking to embark on the next iteration in the coming months. The ideal candidate should have expertise in managing tech teams and be able to provide ongoing advice throughout the project timeline. This consultancy will involve working closely with the founders to build out a tech team to ensure the successful completion of the project.