PayPal Integration & Maintenance on Vue.js/Node.js

I'm seeking an experienced developer to integrate PayPal as a payment gateway into my existing platform and provide ongoing maintenance.

Key Details:
- Frontend & Backend codebase is hosted on GitHub
- The platform is currently hosted on Aliyun (Alibaba Cloud) in China

Requirements:
- Proven experience with PayPal integration
- Familiarity with Aliyun (Alibaba Cloud) hosting
- Ability to handle ongoing maintenance and support
- Comfortable working with remote codebases (GitHub)

Please provide:
- Relevant past projects or experience
- Availability
- Estimated timeline for integration

Frontend: Vue.js
Backend: Node.js