Cloud-Native E-Commerce Platform

Overview

At CMC Global, Nguyen maintained and extended a hybrid e-commerce platform for an online bookstore. The backend combined serverless AWS services with containerised services to support catalogue, transaction, and operational workflows.

Role

Nguyen worked as a Software Engineer responsible for backend feature delivery, service maintenance, database performance, infrastructure cost control, and automated test coverage across backend services.

Problem

The platform needed to support evolving e-commerce workflows while keeping latency, AWS cost, and operational risk under control across DynamoDB, Aurora, Lambda, and event-driven integrations.

Solution

The implementation refined DynamoDB access patterns, tuned RDS and Aurora query strategies, adjusted Lambda capacity, and improved event-driven flows with SQS, SNS, and EventBridge. Backend services were maintained with 90%+ unit test coverage.

Outcome

The work improved database query performance by 20%, reduced AWS infrastructure cost by 30%, and preserved long-term backend reliability through sustained automated test coverage.