Integrate payqora.com payment gateway to my website

We are looking for an experienced PHP developer to integrate the PayQora payment gateway into our custom-built website.

Our website is developed using a custom tech stack that includes HTML, PHP, and MySQL (no CMS like WordPress or Shopify). The integration must be done directly within our existing codebase while maintaining performance, security, and clean architecture.

Scope of Work:
• Integrate PayQora payment gateway into our existing website
• Implement secure payment processing (including API integration, authentication, and transaction handling)
• Handle payment success, failure, and pending states properly
• Ensure proper database updates after transactions (order/payment status)
• Implement necessary webhook or callback handling (if supported by PayQora)
• Provide basic testing to ensure end-to-end payment flow works correctly
• Fix any bugs related to integration

Requirements:
• Strong experience with PHP and MySQL
• Prior experience integrating payment gateways (preferred: PayQora or similar APIs)
• Understanding of API integration, JSON handling, and server-side validation
• Knowledge of security best practices (e.g., preventing fraud, securing transactions)