As you want to get the details of career after B.Tech ECE Electronics and Communication Engineering so here it is for you:

List of government jobs for Electronics Engineering students
BSNL(Bharat Sanchar Nigam limited)
ISRO(Indian space research organisation)
DRDO(Defense research and development organisation)
ECIL(Electronic Cooperation of India limited)
AAI(Airport Authority of India)
RRB(Railway Recruitment Board)
IES, IAS, Cabinate Secretary etc by UPSC(Union Public Service Commission ).
Defence jobs like Indian Airforce. Indian Army, Indian Navy.

List of Private Companies for Electronics and Communication students
RELIANCE
NOKIA
TATA
Bharat Heavy Electricals Ltd
LG
WIPRO
VODAPHONE
SPICE
VIEDOCON
SAMSUNG
Infosys
TCS

B.Tech. Electronic and Communication Engineering Employment Area

Indian Engineering Service (IES)
Indian Telephone Industries, BSNL / MTNL
Semiconductor, Chip Design-Industries (Motorola, IBM, HP, STM, Philips, IT etc)
Indian Oil Corporation Ltd. (HPCL / BPCL / IPCL)
Oil and Natural Gas Corporation Limited (ONGC)
Civil Aviation Department
Steel Authority of Indian Limited (SAIL)
Power Sector (NTPC / NHPC Ltd.)
Bharat Electronics Limited
Indian Railways
Indus tan Aeronautics Limited (ISRO)
Software Industries (ALL MNC’S) (HAL)
Teaching / Research
Government Sector


Advance Course in B.Tech. Electronic and Communication Engineering
M.Tech. (Electronics and Communication Engineering)

After completing B.Tech. (Electronics & Communication Engineering) you can become:
Electronics Engineer