Hello, I can do all the things you want. I have made RESTful API in deno and node, containerized it and hosted on self scaled platform railway, i have integrated that same API with flutter android app and web app.
I can use any database (SQL or non-SQL) of your choice, I also worked on pricise location fetching and kotlin code for native android oprations.
I can push the repo evey day on github, I prefer efficient and elegant coding practices.
seems perfect match to your requirements.
I need more details on this though!
Let me know if we want to work togather, final cost may vary depending on final requirements of project.