Fixing issues: PHP, NodeJS, AngularJS, MongoDB, CodeIgniter.

Hi, We are looking for hiring freelancer who is strong experienced in: Fixing issues: PHP, NodeJS, AngularJS, MongoDB, CodeIgniter Framework. We have some issues in our current website which our own developers was unable to fix permanently, this issues we faced in old site as well as new redeveloped site with: PHP, NodeJS, AngularJS, MongoDB, CodeIgniter. Too… This time we are looking for someone who is highly experienced in above languages platforms. We are an Indian startup – online price comparison as well as cashback platform. Some of our competitors are: [login to view URL] [login to view URL] We are facing issues with: Our current site loads and display all products very slow as compared to our competitors – it takes up to 21 sec’s to load all content on single and all products pages. Site using caching – yes we tried. Site using CDN + AWS – we tried with old site. We even tried query optimization, we redeveloped old site from MySQL to MongoDB but, Site still have loading and displaying all products page as well as single product page issue. So we are looking someone to fix products display method to boost it loading fast on all products pages as well as on single products pages. Rework on products module and proper coding needed with query optimization for less database load and fast products loading. So, we are looking for better page loading speed like our competitors all products pages have. Better Price fetching scrapping method – from all major ecommerce stores. Now... we will use same current design + cashback system We need to modify product section and price fetching with scrapping method. All other section will work fine without any issues. Kindly please mention - "YES I AGREED WITH ABOVE REQUIREMENTS" before bidding, so I will know you read it completely and I want you to understand above things before bidding. Only highly experienced freelancer in Fixing issues: PHP, NodeJS, AngularJS, MongoDB, CodeIgniter. Thank you!