The companies will start surging in from your 6th semester as in end of 3rd year.
And most of them offer internship to students which might later convert into a PPO based on your performance during the internship.
Though some companies like Musigma , Reliance , ITC offer full time right from the start.
I am currently in 8th semester and I too did an internship.
Companies that offer internship cum PPO (Performance based)
VMware , Amazon , Highradius , Lavelle network , Autodesk , Hindustan Uniliver , Ericsson , Quikr , HP , Hcl and many more…
Companies that offer full time with mandatory internship –
Delloite , PWC , KPMG , Optum , Novartis , Incture , Odessa , Accenture , Wipro , Capgemini , Cognizant , IBM and etc…..