High-Performance Payment System Developer

2 days ago

Sydney, New South Wales, Australia beBeePayment Full time $135,000 - $168,000
Job Overview

We are seeking an experienced Payment System Developer to design and develop scalable, secure payment systems for global banking clients.

Main Responsibilities:
  • Design and develop RESTful APIs using .NET Core/.NET 6+
  • Integrate with digital payment gateways (e.g., Visa, Mastercard, UPI, PayPal, Stripe) and banking APIs
  • Develop cloud-native solutions using AWS services such as Lambda, S3, API Gateway, DynamoDB, ECS
  • Collaborate with cross-functional teams to implement payment workflows
  • Ensure security, compliance, and data protection in payment-related transactions
  • Optimize backend systems for performance, scalability, and fault tolerance
  • Write unit tests and participate in code reviews and continuous integration pipelines
Required Skills & Qualifications:
  • 5+ years of experience in .NET Core / .NET Framework development
  • Strong experience in REST API design and development
  • Experience with AWS cloud – Lambda, S3, SNS/SQS, API Gateway, etc.
  • Solid understanding of Payments domain, including payment processors, tokenization, PCI compliance, and real-time transaction flows
  • Exposure to ISO 8583, ISO 20022, or similar payment messaging standards
  • Good understanding of OAuth2.0 / JWT and securing APIs
  • Familiarity with CI/CD tools like GitHub Actions, Jenkins, or Azure DevOps
  • Experience in Agile/Scrum environments
Nice to Have:
  • Experience with microservices architecture
  • Exposure to banking and financial services clients
  • Familiarity with DevSecOps practices
  • Basic knowledge of SQL / NoSQL databases

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