• Designed and implemented a dynamic security control system using AWS Organizations to enforce regional access for 5M+ cloud accounts.

• Successfully supported high-traffic workshops for newly released AWS services and enhanced the functionality of a fleet management service governing 5M+ accounts, ensuring high availability during AWS re:Invent (2022–2025).

• Automated a resource cleanup workflow for abandoned internal cloud accounts, significantly reducing infrastructure costs.

• Designed and developed a secondary resource detection system with AWS Resource Explorer and Lambda to validate account cleanliness and prevent data leakage.

• Improved team efficiency by authoring service onboarding processes, creating technical runbooks, and mentoring new engineers

• Developed and maintained highly available microservices using Java Spring Boot to validate critical financial transactions within PayPal’s global compliance domain.

• Enhanced system reliability and maintainability by implementing comprehensive automated unit and integration testing suites using JUnit and Mockito.

• Collaborated in a fast-paced agile environment to ensure code quality and successful deployments through continuous integration pipelines.

• Designed and built data model for small business ledger account data with Python and PostgreSQL, used Pandas to clean and process the data.

• Developed backend service with Flask. Implemented GraphQL APIs with functionalities such as querying, updating and processing user’s account data.

• Built frontend service with React and bound user’s account data to the visual components to inform the business owners about the performance of their business.

• Developed time-saving tool for project dependencies copyright scanning work (IPScan) in Python, the tool was utilized by the frontend team to search for license of the dependency packages, it improved task efficiency by 37%.

• Implemented system language localization with i18next framework enabling users to optionally switch system language.

• Developed Dell Wyse ThinOS 9.0 frontend UI and functionalities with JavaScript and Vue.js / ElementUI, including out-of-box-experience (OOBE) and Imprivata login window.