Develop an api to an angular application

We developed an application that runs dynamic web/mobile questionnaires based on json files.
We need to develop an API to that application that will be produce these web pages as html files
for a client application.

Here is a link to the application: 63.32.87.120/exam-angular/Quest1.html

Notices
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- All the work is on frontend. No need for backend.

Requirements
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1. Minimum 5 years Experience in similar projects (including JS,Angular,HTML,CSS)
2. Minimum 5 years Experience in UX\UI design and develop.
3. English level - Advanced (Reading and speaking)
4. The freelancer should fill a daily work hours report
5. Availbility in zoom
6. Only freelancers (No companies)
7. The freelancer will start the project immediatley.
8. Availability of about 40 hours per week for the project

******* Please send me example of a similar projects *********