Hi,
I am a backend developer from india, working in product based companies for 5+ years. I am strong in python and nodejs based development with frameworks like django, express etc. Single handedly managed servers handling millions hits per days. Well versed with real time notifications like socketio, google fcm. Database experience include mysql, dynamodb, mongodb. cache - redis, elastic search. I have read the attachment for Swapeer. Please let me know if interested for a discussion for ranking feature in your project.