Is it possible to do practice with job

Dear Sir/Madam,

I want to do practice but in earlier stage obviously i am not getting clients so, is it possible to join some CA firm and hold COP.

i am also planning to join CA firm have 5day's week so i can set up my practice.

Guys what u think ? is it Possible to do ?

if u r aware about any vacancy in ca firm at mumbai/thane following 5 days week pattern please inform me