Mobile Site Enhancement and Signup Integration

I need an experienced web developer to enhance my current site, focusing on the mobile view, improving the signup page with a broadband address checker, and optimizing the checkout page.

My Website is https://beconnect.co.nz/
I need to make plans page same as https://360net.co.nz/plans/
Try with an address: 27 GRAMMAR SCHOOL ROAD, PAKURANGA, MANUKAU 2010
To select the plan and checkout page.

Requirements include:
- Mobile View Improvements
- Enhance scrolling experience
- Revamp layout and design for better usability
- Optimize loading speed

- Signup Page Integration
- Implement a Broadband Address Checker
- Functionality to display available broadband plans for the entered address

- Checkout Page Optimization
- Streamline the checkout process for better user experience

Ideal skills and experience:
- Strong background in mobile-responsive design
- Experience with address validation tools
- E-commerce checkout optimization