- Built REST apis for consumer services - Built cloud infrastructure and integrated server less architecture - Implemented performance optimization for big queries.

- Build a lot of chatbot card components for design chatbot - Implemented smart rendering algorithm for drawing a lot of chatbot diagrams - Built chatbot center and widget for integration on customer websites.

- Built the drawing platforms by using the combination between ReactJS and D3.js. - Built the layout pages by using React component. - Deployed the app by using AWS VPC/ELB/RDS/ECS/S3/CloudFront infrastructure.

- implemented chrome extension for automated lead generation based on scraping - implemented some 3rd party apis like MWS and Liveswitch(Webrtc) - built some useful modules for various CRM functionalities