• Analyzed, designed, developed and implemented complete RESTful backend API using AWS based Serverless Framework and python Flask from scratch.

• Analyzed, designed and build database model with hybrid solution (Aurora + DynamoDB) to meet business requirements.

• Build and configured AWS VPC and DB proxies for Lambdas to optimize overall response speed and improve security.

• Centralized cloud configuration files into a single YAML for generating CloudFormation stacks.

• Design and implemented data streaming solution and middleware for asynchronous data analyzing and event scheduler using SQS, SNS, Lambdas and EventBridge.

• Design and implemented custom API gateway authorizer for Cognito user authentication and authorization with social sign-in and SAML 2.0 supported.

• Manage release and deployment pipeline in Bitbucket and JIRA.

· Maintain and optimized existing features of ASP.NET MVC project.

· Integrated Stripe payment and SendGrid email delivery system.