Andrew Nguyen Email and Phone Number

• Developed 9 AWS Lambda functions and 4 ECS services, providing high-performance, scalable, and reliable solutions for Vanguard’s critical financial applications.• Enabled instant data processing by modernizing a daily-run Java batch process into a real-time Lambda application. Simultaneously repurposed the original system for advanced reporting capabilities. • Ensured continuous service availability during regional outages by implementing multi-region capabilities.• Achieved 100% resiliency and fault-tolerant message filtering, ensuring zero loss of critical financial transactions. • Implemented DynamoDB solutions including Global Tables, CRUD operations, querying with Global Secondary Indexes, Time-to-live, and schema design to support scalable applications.• Ensured the reliability and correctness of the codebase by authoring and maintaining comprehensive unit tests, achieving full test coverage and a 100% mutation test score.

• Developed server-side and client-side of a cross-platform mobile app using Flutter. Implemented user authentication using Social Login APIs and stored user credentials on Firestore.• Integrated college, major, and job APIs to display curated information to users through main and detail pages.• Increased the development rate by 25% through modularizing backend code with OOP concepts and various Design Patterns.• Programmed a web chat app with MongoDB, Express, Nodejs, Typescript, ReactJS, and Docker.• Built features such as middleware token authentication, MongoDB model manipulation, join/ leave group, private group, invite user, and password reset.

• Created an Android app to allow users to find nearby shared electric scooters and rent them using Google Maps API.• Implemented Firebase passwordless login, onboarding, and profiles using React Native.