We’re looking for an experienced developer to integrate a secure and reliable payment system into our web platform. The goal is to allow customers to complete transactions smoothly using common payment methods such as credit/debit cards and popular online payment services. The integration should handle payment processing, transaction validation, and proper error handling while maintaining strong security standards. It’s important that the payment flow feels seamless for users and works well across both desktop and mobile devices. The system should support webhook handling for payment confirmations, basic transaction logging, and a simple admin view to monitor payment status if possible. Clean and well-documented code is expected so future updates can be managed easily. Experience with modern web frameworks and payment APIs will be helpful. The total budget for this task is $300, and we expect the work to be completed within a reasonable timeframe with proper testing before deployment.