Based on AWS S3, bootstrap, independently build document management system for users through our web app. Help clients with different groups and access level to manage files in our system with other features. • Based on AWS Elastaticsearch, JEST API, TESSOCR, provide Full-text search queries for our clients instead of database search directly, it includes single or multiple words or phrases query and returns documents that match search condition, help our clients get documents (like patient order, patient prescription, patient invoice) very quickly. • Based on AWS Jenkins, working with system administrator, implement app automation deploy. Using AWS Jenkins as CI and CD tool to make our app deploy automatic, grab latest code from repository, testing and build war, then send out war package to web server for deploy. • Work with the third-party payment platform (Axia Payments), call their RESTful API implement online payment, we also write payment plan CROB job and set it up on server for automatic payment. • Work with team member implement audit log system for data analysis team, use XML files configures all the fields need to be audited, tracking and analyzing the data, help data analysts pinpoint the cause of errors quickly and accurately. • Base on AWS replica, some of our client wants to access database directly, using AWS replica feature to create replica database and synchronize with prod database at real time for read only. • Implement report system, Using HTML, CSS, JavaScript,PHP, Jquery, .Net Google map/charts API, bootstrap other library and plugins to render responsive visualize user friendly front view, caching the criteria and results to improve user experience, generate html/csv/zip reports to help clients to better analyze their customer, inventory, invoice, claim, etc. • implement Patient Access Solutions,designed and implemented MVC architecture using Spring Framework,configured and used Spring-hibernate to manipulate data in database. • Daily job includes: Responsible for build whole functional components, helping tools, add more features on our web app based on client requirements, bug fixing on our web application, optimizing app performance and improve user experience (optimize query, using ajax, RESTful API, cache data, clear backend code etc.).