Depends on the company , team , idea , your ambition in life and lot of other things .

+1 it really depends a lot  
  
 Also do look at the quality of angels who’ve committed and how much

Software Engineer

Do not leave the existing job and continue the company as a side hustle for 1-2 years. But ensure product market fit is analysed.

Don’t you get into conflict of interest issue with current employer? As most Indian companies having the employment clause as you cannot do anybody other work beyond the company.

Mostly not enforceable. Would take years in court

Product Manager

Software Test- QA

Angel funding is not that difficult to get. So don't make it any kind of benchmark to quit a job or start up.

What is your opinion about leaving a 1cr job for starting a company which already have angel funding?