Landing page builder, web developer, JSON required

I need a web developer that is familar with platforms like Unbounce, which is what I use. I need someone to build me landing pages and someone that understands JSON.

I use these landing pages to send leads to my clients via api/json.

Please look below at some examples

https://www.claimjusticetoday.com/hair/
https://www.receivecompensation.com/firefighteningfoam3/