• Developed an interactive UI which dynamically renders gallery and image carousel modal by using flexbox and React’s styled-components

• Implemented a lightweight app with hooks by encapsulating business logic in functional components

• Built a Express proxy server that bridges API routes to serve up multiple microservices

• Containerized the MERN stack with Docker and served from EC2 for efficient deployment and reliability

• Achieved a Google PSI score of 98 by holding minimal states in components

• Utilized Jest and enzyme testing environment to achieve ~80% code coverage

• Designed and implemented the microservice's back-end system architecture to handle over 1000 RPS on AWS t2.micro with <1% error rate on a 120million rows data pool in PostgreSQL.

• Reduced the response latency from ~5000ms to 63ms by implementing server caching configuration and hosting Nginx as the load balancer to distribute requests across horizontally scaled servers sequentially.

• Stress tested on Loader.io with simulated CRUD operations and identified bottlenecks on new Relic by observing throughput, error rate, Apdex, database query time.