Independently responsible for full lifecycle development of core systems: - Developed high-performance payment integration platform using Go and PostgreSQL: - Demonstrated scalability of 450+ TPS and 10,000+ concurrent users - Revolutionized integration reliability through idempotency key mechanism - Implemented comprehensive monitoring and maintained full test coverage - Enhanced enterprise AI capabilities: - Leveraged cutting-edge MCP technology with Python for AI context management - Streamlined product knowledge acquisition for business teams - Led system modernization initiatives: - Refactored legacy PHP system to modern Go architecture - Established standardized development processes

Responsible for backend system development and optimization using modern technology stack (Go, Fiber, ArangoDB, Redis, NATS): - System Performance Optimization: - Reduced memory usage - Reduced API response latency - Implemented large-scale stress testing - Architecture Improvements: - Integrated unit testing for code quality assurance - Implemented DevOps practices and Feature Toggles - Refactored core service architecture

Developed financial service systems using PHP, Laravel, MySQL, Redis, and RabbitMQ: - Seamlessly migrated member login system with zero service interruption - Developed OAuth 2.0 compliant authorization system to streamline external partner integrations - Developed video course subscription system, creating new revenue streams

Contributed to payment system development using PHP, Laravel, Redis, and OracleDB: - Refactored core transaction system to support points and refund operations - Introduced unit testing to improve system stability - Optimized system architecture to enhance development efficiency