React Native Architect, Lead, or Senior Dev

I'm looking for 2-3 experienced React Native Developer to lead a team of multiple junior/midlevel developers.

The product is an e-commerce shop for Android and iOS. Besides the latest version of React Native, the latest EXPO framework is used for key parts of the app. Overall, the code is very well structured.

There are three roles within the team
(1) Architect: you are responsible for the concept of the app and the overall architecture
(2) Lead: you lead the team of developers, provide hands-on advice and coding guidelines, implementing the architect's concept
(3) Optional: A senior React Native developer to support the development of the app

Please name in your application which role would suit you best.

Obviously, the roles are just "labels" for the client. We are aiming to set up a team of freelance experts who work closely with each other on eye level and respect each other's experience.