Cloud-Native E-Commerce Platform

Overview

At CMC Global I maintained and extended a hybrid e-commerce platform for an online bookstore. The backend paired serverless AWS services with containerized services to run catalogue, transaction, and operational workflows.

Role

I worked as a Software Engineer across backend feature delivery, service maintenance, database performance, infrastructure cost, and automated test coverage.

Problem

The platform had to keep pace with evolving e-commerce workflows while holding latency, AWS cost, and operational risk in check across DynamoDB, Aurora, Lambda, and a web of event-driven integrations.

Solution

I refined DynamoDB access patterns, tuned RDS and Aurora queries, right-sized Lambda capacity, and tightened the event-driven flows built on SQS, SNS, and EventBridge — all kept honest by 90%+ unit test coverage.

Outcome

Query performance improved by 20%, AWS infrastructure cost dropped by 30%, and sustained test coverage kept the backend reliable well past each release.