Secure GraphQL Banking API Integration

I need a production-ready, security-hardened GraphQL API that sits between our core banking platform and selected third-party payment service providers. The service will run on Apache Camel so that routing, orchestration, retry logic, and auditing are handled consistently... (Budget: ₹12500 - ₹37500 INR, Jobs: Apache, API Development, GraphQL, JSON, Kubernetes, OAuth, Security Auditing, XML, XSLT)