Hey priyashi,

To get placed in a core electronics company you can try to get information and knowledge along with the certificates of these courses listed below:-

Digital and analog vlsi design

Embedded system

Computer networking and system security

Wireless networks/telecom

Digital signal processing applications

PLC/SLCADA/DSC

PCB designing

Any two of these would help you to get better job offers and you'll have Advantage.

Hope it helps!

All the best!