Build a website for Assessment/Examination

I am looking for someone to create a testing website (exams) using C#, HTML, CSS and Jquery. The website will have two main sides, the side where the admin can create an exam/test and groups. And another side where student/candidate will enter to conduct the test. Reports coming from this system are downoadbale PDF files. Admin to create a Word docement, upload it to the system and decide where to fill information from the database. System to get the scores, add it to the Word file and allow user to download it as a Word file or PDF. System should be well designed, where user can do some actions and save on the page without refreshing or going to the next page. No WordPress or ready-templates to be used in the website. Ready items like visible Timer design can be used if purchased. Pages of the students/candidate should be fully friendly with all Phones, tablets Proand all browsers. Programmer to be very carefull in doing the structure and giving names to the objects and variables, and write some documentations to explain each part of the code. Programmer should simplify pages/code/tables and make it easy to read for the next programmer. The exams can be in multi languages, therefore, the design should change from left to right when some languages is used. Work per hour is preferred. The project might not be very soon and I will have offers to compare. Therefore, please submit your offer (and any samples you have) and give us enough time to decide.