As tough and humdrum it sounds to look for e-commerce solution providers, more painstaking it is to research about them, and the more you research the more options you get.
Develop APIs to ease and accelerate the integration between various software components and technologies including payment gateways.
Customize your website to make it a complete e-commerce solution with Shopify e-commerce development, API integration, theme development, etc.
Migrate and Upgrade the PHP project (as required) to higher versions or cross-technology platforms like ASP.NET, JavaScript, Node.js, etc.
