Building a Web Based Application

Good Day I'm a skilled Automation Engineer professional, what i want is building a web application with both back end and front end as per my requirement, my project is i will gather some data from some Generators by using Siemens S7-1200 PLC (this part i will take care of it) then i need a help for send one data-block from each Generators using 4G router in each Generator to a single PC (Server) which will contain a data bases for all data gathered from each Generator , then making a web based application as per my requirement to view that data & Generating Graph reports& sending email and SMS if some conditions happens or in time bases (some calculation must be done on the data before viewing the data this i will inform you later) . I want to have a full control of the application and to be in simple interface and to modifiable for any future modification. Also mobile version of website to be included