Middleware Shopify Payment App Development -- 2

Job ID: 39782352

Budget: $30 – $250 USD

I'm seeking a seasoned developer to create a middleware Shopify payment app for me. This app should connect my PSP REST API to facilitate payments via Knet, Mastercard, Visa, Amex, and Wallet on my Shopify stores.

Key Requirements:
- Payment Integration: The app must support various payment options including Knet, Mastercard and Visa, Amex, and Wallet.
- Multi-Environment: The middleware app should function seamlessly across Development, Staging, and Production environments.
- User Interface: A user-friendly interface for configuration is essential.

Ideal Skills and Experience:
- Proven experience in creating middleware apps, preferably for Shopify.
- Strong understanding of REST APIs and payment gateway integrations.
- Ability to design intuitive user interfaces.

I look forward to your bids.