Yina Yi

Built an AI-powered code review assistant using AST-based diffing and multi-turn prompt agents, with structured results stored in a queryable backend. Improved a critical API's success rate from 78.3% to 99.9% through enhanced trace context, standardized error reporting, and Grafana/Argos observability pipelines. Delivered permission request and query modules, a config-driven form generator with RBAC and internationalization, and a shared authorization HOC. Migrated an access control platform to a monorepo and refactored its SDK with Module Federation, reducing bundle size by 38% and integration effort by 50%. Built a React and TypeScript product display system that contributed to an 18.66% increase in Gross Merchandise Volume and a 15% increase in user satisfaction.

Built full-stack features for a meditation application, including Node.js backend functions for content retrieval and session tracking and reusable React Native components for authentication and dynamic content delivery. Integrated mobile features with Flask APIs and PostgreSQL, and used Azure audio identification and synthesis services to support AI-based sleep advice. Set up CI/CD with AWS CodePipeline, saving approximately six hours of manual management work per week.

Built full-stack features for a meditation application, including Node.js backend functions for content retrieval and session tracking and reusable React Native components for authentication and dynamic content delivery. Integrated mobile functionality with Flask APIs and PostgreSQL, and used Azure audio identification and synthesis services to support AI-based sleep advice. Set up AWS CodePipeline CI/CD, saving approximately six hours of manual management work per week.