Which government jobs can I get after B.Tech in ECE?

You can appear for Indian Engineering Services. You can also appear for all Govt jobs where eligibility criteria is graduation degree. You can seek job in DRDO, ISRO and other R&D org. You can appear for GATE to seek job in PSUs. You can apply for PO in Public Sector Banks. You can apply in NIC,

You can search jobs in ISRO, DRDO, BEL, PO, SSC IES, IAS IRS, BSNL JTO, Army, Airforce, Indian Navy, PSU. Other options, where jobs can be searched are: CISCO, ORACLE, TOSHIBA, TATA, PHILLIPS, Texas Instruments, Intel, AMD, IBM, Samsung Electronics, Sony, Nokia, Nvidia, HP, LG Electronics, BHEL, ECI