Built RESTFul APIs for the Goodnight App using Ruby on Rails

- Maintain e-commerce website and content website- Develop a chrome extension for comparing prices on Amazon e-commerce sites- Develop web crawler to catch the amazon products information required by the chrome extension- Improved Unit testing coverage rate to more than 65%.- Package the payment gem of Active Merchant specifications into Offsite Payments specifications- Upgrade Rails and Ruby versions- Performance optimization and research SEO

- Use Rails to maintain 5 main websites and several events websites.- Has the experience to mentor new developers., and lead the team tofinish jobs on time.- Improved performance issue, reduced SQL query response time (speed up average response time 40% within 1 month).- Use the Chef to manage the environment of all servers.- Changed CDN from Akamai to AWS CloudFront to make it easier to view background information- Update the App Server from Unicorn to Puma, reducing machine memory usage- Development and maintenance of internal gems- Import Webpacker lets our applications can use the latest Javascript packages.- Develop and maintain API and RSS, lets our partners can fetch the latest articles.

- Develop and maintain e-commerce websites established by PHP- Maintain daily popular product API for external connection- Write SQL query to retrieve data report- Use Lumen to build the backend APIs required by the app- Improved team workflow, introduced Git and GitFlow to help optimize the efficiency- Normalized partial data tables- Event website construction