Scenario: I am an Indian and a 5+ years experienced Java developer and currently I have been looking for a job change within India. I am an immediate joiner and my notice period in previous company got over a week back. So whichever company I am getting selected to is asking me to get onboarded within a day or two because what they feared is I am an immediate joiner and my technical fields are strong and it would not take me much time to get higher offers from other companies and join the other one.
Problem: I am waiting for the best company to hire me. But I need an offer letter to negotiate for a higher package, obviously at some point of time package matters even if you are getting the best. I have been selected in 4 companies till now but with no offer letter because it is pending with me to submit my documents. 2 of them are startups and 2 of them are mid-level. I fear giving my documents to companies where I know I will not be joining once I get an offer from a top MNC. And also if I submit my documents they will take no time to release the offer letter and get me onboarded the same day (since they need resources to build their company) which I don't want since I am waiting for the best and don't wanna get into the confusing stuffs of walking away during probation period or within 1-2 days of joining a company. Even they know what you will do after getting an offer letter. But I desperately need the offer letters for a better package/negotiation. What should I do ?
Currently I am just trying to hang on with the 4 companies that I have been selected to and telling them stuffs that I need more time to submit my documents because of some reason so that if I don't get offer letters from top MNC early or I don't clear interviews in my dream companies, I might carry on with one of the 4 that I have been selected to previously.
But I need an offer letter from earlier selected companies even to negotiate with my dream company without joining them. How is that possible after being an immediate joiner where I don't get much time to wait?
Any suggestion will be helpful. Thanks in advance!