o Developed enterprise-level backend search system using Java, Spring, and Mockito, supporting 100M+ daily search queries with high scalability. o Implemented multiple Airflow DAGs data pipelines using Python and shell script, integrating with GCP BigQuery and Confluence for automated reporting, leading to 40% reduction in deprecated code, and improving system maintainability. o Diagnosed and eliminated 20k+ NPEs using Splunk logs, resulting in an 80% drop in runtime errors and improving weekly deployment success by 25%.

o Developed and deployed 20+ RESTful APIs for a self-order service using TypeScript with Node.js, inte- grating Cloud Firestore for efficient database management. Implemented CI/CD pipelines for automated testing and deployment, and utilized Terraform to provision scalable infrastructure on GCP o Wrote 100 unit tests with Mocha.js, raising backend test coverage from 60% to 85% and decreasing CI/CD pipeline failures by 15%. o Delivered GCP Cloud Functions using TypeScript to monitor database changes and send alerts to Slack channel, reducing backend errors by 30%.