Full stack developer | hourly rate

This is a simple live chat app with basic security architecture, file structure architecture, and various naming conventions across github version control, file-names, etc. We're going to be implementing a DDD backend design mixed with a feature slice design frontend because this is a NextJs 16+ application, and this is basic convention at Inbox Zero Pty Ltd. I'm only needing a developer to work on small stuff for a few hours once every week or so, something like ports and adapter pattern implementation for Authentication, or a generic repository pattern