HTML to WordPress Migration & APIs

I need my current static HTML site rebuilt on WordPress so I can manage content more easily and extend its functionality. The visual style, page structure, and all current live elements should carry over exactly, but the backend must be WordPress-native, lightweight, and responsive across devices... (Budget: ₹12500 - ₹37500 INR, Jobs: API Integration, Backend Development, CSS, Frontend Development, HTML, PHP, Web Development, WordPress)