Hi, I have 7 years experience in programming and certified by Microsoft and Freelancer. I am very familiar with API programming and worked on many APIs like ebay, BigCommerce, Shopify, google, twtitter, facebook, instagram and many Otherl I already created similar applications which pulls products data from BigCommerce, Shopify, eBay,Shelfy and murphysmagic and following are the few similar projects I worked here in freelancer. I can integrate your two sites as you watned. Looking forward to work with you. Thanks
https://www.freelancer.com/projects/C-Sharp-Programming-ASP-NET/Create-connection-API-between-webshop.html
https://www.freelancer.com/projects/PHP-Software-Architecture/Write-some-Software.6038474.html
https://www.freelancer.com/projects/Javascript-NET/Write-some-Software.6474171.html
https://www.freelancer.com/projects/Software-Architecture/Amazon-set-zero-with-listing/
https://www.freelancer.com/projects/php/Automatic-update-inventory-Amazon-Pro/
https://www.freelancer.com/projects/NET-Visual-Basic/Simple-Betfair-API-bot-Visual.html