What percentage of developers in india do you define to be from good colleges ? 15k IIT grads out of 1.5 million total ? So about top 1% ?
out of 1.5 million only 10% are employable i.e 150k grads [1] Out of that 150k, 50% will be employed by mass recruiters (Infosys, TCS, Cognizant, HCL, Wipro)
You can see more accurate salary points here https://www.levels.fyi/t/software-engineer/levels/entry-leve...
[1] https://www.business-standard.com/finance/personal-finance/o...