Social media App frontend & Backend Performance.

I need help shaving noticeable lag from the backend of my social-ecommerce app. Right now two endpoints are dragging their feet—loading user profiles and fetching product listings—and the slow-response times are starting to hurt engagement... (Budget: ₹1500 - ₹12500 INR, Jobs: API Development, API Integration, API Testing, Backend Development, Database Design, Database Management, Database Programming, Mobile App Development, Performance Tuning)