Yu Ming Chang Email & Phone Number

Taiwan

• Led backend development as project leader, ensuring timely feature delivery. Designed system architecture, database schemas, and API specifications to enable seamless integration with the front-end team.• Conducted knowledge sharing sessions and authored SOP documentation on SOLID principles, database sharding, and related topics, serving as a consultant for engineering teams in these areas.• Developed a database archiving service that stores data in S3 and retrieves it using Athena, achieving a 78% reduction in data volume and leveraging S3 Glacier to save 23 times on storage costs.• Optimized multiple projects by increasing unit test coverage to 90%, significantly reducing bugs and enhancing overall code quality.• Implemented mock data sessions to simulate real-world scenarios, allowing developers to test edge cases and enhance code robustness, reducing test timeouts by 16%.

台灣 台北市

• Led zero-downtime data migration initiatives in production, ensuring minimal disruption.• Architected and deployed a scalable Export Service on AWS, supporting multiple document structures and streamlining business processes.• Restructured APIs, serverless solutions, and data center services for improved scalability and reliability.• Designed and maintained backend components, integrating third-party web services while ensuringcomprehensive unit, integration, and end-to-end test coverage.• Built and optimized data processing workflows, including ETL, data pipelines, OLAP databases, real-time stream processing, and cross-system data synchronization.• Optimized database performance by partitioning tables and refining slow queries, reducing pipeline runtime by approximately 57%.

日本 品川區

（第一CS研究開発部）• Developed scripts in JScript and VBScript to automate and expedite model generation in SoftImage.• Created and optimized Maya plug-ins to assist 3D animators in modifying and correcting model parameters, improving workflow efficiency.