Backend & Dashboard for Virtual Card Issuance (0x.dev + API Integration)

We are looking for a backend developer to build a secure dashboard and integrate it with a third-party API for virtual card issuance. The project must be developed using 0x.dev tools and deployed within 7 days.

Key Features:

Backend logic and secure admin dashboard

Full integration with a third-party virtual card API (API docs + keys provided)

Built on 0x.dev (React + AI tooling environment)

Admin panel must allow us to set and manage profit margins per transaction/card

Basic order management: card issuance, funding, tracking, and logging

Secure handling of environment variables (e.g., API_KEY, JWT_SECRET)

Deployment via Vercel (or similar)

Ideal Developer Has:

Strong experience with API integrations (RESTful, token-authenticated)

Familiarity with 0x.dev, Vercel, or modern serverless deployment stacks

Ability to create secure and responsive admin/user dashboards

Clear communication and ability to deliver within 7 days

Fluent in English or Portuguese

Deliverables:

Fully functional and live backend + dashboard

Admin panel with configurable "our cut" / markup settings per card or product

Secure code and environment structure

Video or document walkthrough explaining the dashboard and logic

Budget: Open to fair offers
Deadline: 7 days max
Communication: Telegram or Freelancer chat