Connect API to from website to Klaviyo account to feed new contacts

Job ID: 33682774

Budget: $30 – $250 AUD

We are holding an online photography competition using AWARD FORCE platform.
When people enter our online competition, they do it in two parts.
1. The first have to register their account.
2. They then will submit their entry.
So I need to connect the API from AWARD FORCE platform to my klaviyo account to create two LISTS (that are constantly feeding and updating as people enter their details). One klaviyo LIST for when people 'register'. The second list is for when they do part 2, and have 'SUBMITTED' an entry.

Side note: Also, as there are two categories to this competition (Australasian and Non Australasian) we will need to create flows for each account, that only allow people to enter the flow if they are from that part of the world. But this is more for the flows which I will handle. but want you to be aware of it.
Related categories: PHP JavaScript HTML API Klaviyo