Build a functionality in existing web application

About us: A platform that simulates a real-time interview experience by providing a video-based interface to a candidate and provides feedback instantaneously. The feedback is provided by an AI engine that measures the response based on various behavioural and non-behavioural parameters. What we're looking for: A full stack developer who who can work on a knockoutJS PHP mysql and complete below tasks. Requirements: 1. Change the Student view of the platform to invlude a progress bar showing the question/page, the student is answering like 4/5 on all interview questions. 2. Timer for 5 minutes to answer a question. After 5 minutes a pop up appears. To extend by more time, say 3minutes, OR Continue to next question OR exit the interview on no action for 30 secs. the 30 sec timer displays on popup with sound for each second. 3. Option to retake the interview where left or continue with a new one. This goes on Timeine Page, with Continue option where left last time , Option to Take Interview Now on the timeline Page. 4. Skip answering the question. 5. Video and Audio test to check teh audio quality and video quality