Hi
This is vasilatos. As a senior full-stack software engineer who specialized in GraphQL, I am feeling very attractive in your job description
I have been working on Python Django, Flask and GraphQL API building for more than 6 years.
As you can see my profile, I built several solutions for my clients with the technical stacks above you mentioned
I have checked the attached diagram, Architecture looks good
I think that it will be great if we share time to talk about the details
Looking forward to your positive reply
Thank you