dennyyangbb

1. Led the development team to complete a system refactoring in three months, enabling rapid business expansion, including a 14x increase in cryptocurrency payment options and a 10x brand growth in 3 regions. 2. Optimized API performance by offloading high-frequency queries to Elasticsearch, handling payment flows via MQ writing, and applying appropriate rate limiting configurations. 3. Led infrastructure team, reduced AWS expenses by 55% and deployment costs by 50% in 2 months. Optimized AWS architecture, configurations, monitoring, and CI/CD processes. 4. Streamlined security management through Spring Cloud, ensuring authentication, access control, Service Mesh Security, and protection against cross-site issues.

1. Led engineering team, drove continuous innovation to support $100M in orders, working across backend, frontend, AWS, database, Kubernetes, DevOps, data analysis, security, and AI. 2. Invited to direct a cross-functional team of 12—spread across three companies—to implement cloud migration strategies while maintaining system reliability and compliance. 3. Spearheaded a Java/Oracle semantic parsing solution into Java and OpenShift microservices for an insurance client, chosen to resolve issues that multiple teams had been unable to solve. 4. Prevented over-selling through flow control, caching, pre-building, and async writing. 5. Developed security architecture aligned with OWASP Top 10, featuring OpenID Connect, Keycloak, AWS CloudTrail, Cognito, WAF, Route 53, KMS, ACM, and HP Fortify.

1. Led and actively contributed to a 20-member team across Taiwan, improving code quality, CI/CD process, system stability, database performance, and security. 2. Continuously optimized Spring Cloud’s rate limiting, circuit breaking, caching, throttling, and fallback mechanisms based on monitoring data, ensuring high API stability. 3. Provided guidance on the setup and maintenance of Kubernetes Clusters, DevOps practices, EFK stack, and Message Queue architecture.

1. Optimized Java performance by tuning GC, implementing caching, MQ asynchronous writing, and read-write separation, ensuring a minimum of 33K RPM in a China-facing market. 2. Led a 6-person international team to optimize JavaFX application and C++ rule engine. 3. Led a 6-person international team to optimize JavaFX application performance by 10x and Oracle performance by 8x, enhancing ETL processes, and optimizing C++ rule engine.

Led a high-performing sales team of 5, driving strong performance in many Business Summits, which influenced my department to be ranked No. 1 in Taiwan for 5 consecutive years.