Contact me off-list if you are interested. The preferable frameworks to be used in the web app front-end development are React, Vue or Angular JS; TO THE BACK-END The preferable frameworks for developing the back-end functionalities are Node JS/Express or Node JS over aws Lambda functions; TO THE BACK-END DATABASE The preferable databases are aws DynamoDB or MongoDB  -- Sent from my Huawei Mate 9 with K-9 Mail.