I created a serverless application to connect Shopify stores with vendor APIs, including order fulfillment, tracking, and inventory synchronization. The serverless component was developed using AWS CDK, AWS Lambda, Amazon DynamoDB, S3, and SNS/SQS. Monitoring was implemented using Amazon CloudWatch, AWS X-Ray, and Sentry for issue tracking. CI/CD was set up using GitHub Actions and Amazon CodeDeploy. E2E tests were performed against live environment using Cucubler.js, Shopify API, and AWS SDK.