Back-End Developer for Payment Systems

3 days ago


Hong Kong, Central and Western District, Hong Kong SAR China KuCoin Exchange Full time

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Job Responsibilities
  • Responsible for the design, development, and optimization of back-end systems for digital currency payment-related business.
  • Responsible for technical integration with third-party payment service providers (e.g., payment gateways, digital currency payment platforms).
  • Design payment channel access plans, develop and maintain payment interfaces, and handle payment-related transaction logic.
  • Acquiring System Development
  • Develop and maintain acquiring systems, including order management, user fund account management, transaction record storage, and query functionalities.
  • Ensure support for multi-currency payments, digital currency settlement, and complex fund flow scenarios.
  • Technical Architecture Optimization
  • Continuously optimize system architecture to improve scalability and stability.
  • Optimize system performance for high-concurrency and high-throughput business needs.
  • Security and Compliance
  • Implement security mechanisms for payment systems, including data encryption, authentication, and access control.
  • Ensure compliance with regulatory requirements (e.g., AML, KYC) and industry standards.
  • Technical Documentation and Collaboration
  • Write detailed technical documentation, including interface design, development standards, and user guides.
  • Collaborate closely with product, testing, and operations teams to deliver projects successfully.
Job Requirements
  • Education Background
  • Bachelor's degree or above in Computer Science, Software Engineering, Information Technology, or related fields.
  • Work Experience
  • At least 3 years of back-end development experience, with prior experience in payment-related development preferred.
  • Experience in digital currency, blockchain, or financial payment systems is a plus.
  • Technical Skills
  • Proficient in Java programming, with expertise in the Spring Boot/Spring Cloud microservices framework.
  • Familiar with distributed system design and development, and common distributed technologies (e.g., Kafka, Redis, MySQL, Zookeeper).
  • Understanding of payment system business logic and architecture, with experience in payment gateway and bank interface development.
  • Skilled in database design and optimization, with the ability to handle storage and query performance optimization for large-scale data.
  • Experience in high-concurrency system design and performance tuning.
  • Development Tools and Practices
  • Familiar with version control tools (e.g., Git) and CI/CD workflows.
  • Proficient in common development tools such as Maven, Docker, and Kubernetes.
  • Business Acumen
  • Deep understanding of payment industry workflows (e.g., clearing, reconciliation, cross-border payments).
  • Knowledge of digital currency and blockchain principles, with expertise in payment scenario design.
  • Soft Skills
  • Strong team collaboration skills, able to work effectively in cross-functional teams.
  • Strong learning ability and analytical skills, capable of quickly understanding complex business logic.
  • Able to accurately understand requirements, independently complete development tasks, and report progress timely.
Preferred Qualifications
  • Experience with digital currency wallets or smart contract development.
  • Familiarity with popular blockchain technologies (e.g., Bitcoin, Ethereum) or experience in developing blockchain network protocols.
  • Participation in high-performance architecture design and development for payment gateways.
  • Experience with financial risk control, data encryption, and secure payment systems.
Seniority Level

Mid-Senior level

Employment Type

Full-time

Job Function

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