I checked your requirement you need multiple technologies like:
Firebase + Flutter + Web Scraper with Python and Web API.
Docker Container and MongoDB.
I want to tell you we are a proper running company and we have 30 developers in the house.
we are working on different technologies:
laravel, Codeigniter, PHP, ruby on rails.
python, AI, ML, chatbot, Django, Mongo DB, web scraping.
Android, IOS, flutter, xamrine, and others.
We also have a proper design and QA department.
We are leading the digital world.
Thanks.