Opencart Experienced Developer Required

Hello , NOTE - Mention "MAR" in your bid. and read the full description before bidding. Some of the work is done listed below by previous developer i will explain you what you need to be done.... I need Experienced open cart developer . Freshers and less experienced freelancers will not be considered. If you have already done these task you can bid. Theme is already installed on the server. If you have good experience in opencart you can do these task very easily. and design is responsive so you need to check mobile compatibility also after your changes. 1.) Payubiz payment gateway setup - seamless integration 2.) shiprocket API setup (There is some problem with their API . IF you have already setup shiprocket on opencart. you must know how to do this.) 3.) Pincode check (I have list of pincodes) 4.) check out modification. 5.) There are some modification in the Product display page and search page. both are same changes. () 6.) some modification in full product description page. 7.) You need to explain how to manage opencart Thanks