KoalaBridge.com – Crypto swap & AUD cash-out MVP

I need a full-stack freelancer to build a simple hobby site that lets users swap crypto → crypto via the FixedFloat API and cash out crypto → Australian bank/BPAY using Living Room of Satoshi. No sign-ups, no KYC: two single-page flows plus a basic order-status page that polls the provider until finished, and a tiny admin view listing orders and fees earned. Stack: Next.js + Tailwind on the front end, Node/Express proxy with HMAC signing on the back end, PostgreSQL for order logs, deployed to Vercel (front) and Railway/Fly (API).

I want something similar & simple compared to ff.io, houdiniswap.com, & cryptochanger.to to name some examples

Mobile + desktop responsiveness is necessary.

I have attached a PDF with more in depth specifics if that helps