PHP framework laravel developer

We are a HealthTech startup, we need a PHP Laravel developer to help my team develop a bespoke calendar, there is no frontend development needed. The design and user journey has also been completed.

If we work together well, delivered on time and to an expert level, there will be a lot more work for the future.

We can't show the design as I need the developer to sign an NDA:) Price is set, but we might have some flexibility for the right person after they have seen the design?

I need examples of something related to payment gateway and booking system?