Yes you can apply for jobs offered by Indian Space Research Organization after passing B.Tech in Electrical Engineering ..here I am giving you information about Scientist Jobs offer by ISRO below ..

Centralized Recruitment (ICRB)
Scientists/Engineers 'SC'
Post names :
Scientist/Engineer SC - Civil
Scientist/Engineer SC - Electrical
Scientist/Engineer SC - A/c and Refrigeration

Important dates :
The application for on-line registration will be hosted in the ISRO web-site between 28/02/2014 and 21/03/2014.
The written test will be conducted on 26 April, 2014 [Saturday]

Fee :
there will be an Application Fee of Rs. 100/- (Rupees One Hundred Only) for each application.

Required qualification :
Scientist/Engineer SC – Civil
You have to passed BE/B.Tech/BSc (Engg)/Grad IETE/AMIE in Civil Engineering in First Class with an aggregate minimum of 65% marks..

Scientist/Engineer SC – Electrical
You have to pass BE/B.Tech/BSc (Engg)/Grad IETE/AMIE in Electrical Engineering in First Class with an aggregate minimum of 65% marks

Scientist/Engineer SC - A/c and Refrigeration
You must have BE/B.Tech/BSc (Engg)/Grad IETE/AMIE in Mechanical Engineering with specialization in Air Conditioning and Refrigeration in First Class with an aggregate minimum of 65% marks

Age Limit:
35 years as on 21-03-2014 (40 years in case of SC/ST candidates and 38 years for OBC candidates

Selection process :
You have to pass a competitive examination organized by ISRO
The written test will be conducted on 26 April, 2014 [Saturday] at ten venues viz., Ahmedabad, Bangalore, Bhopal, Chennai, Guwahati, Hyderabad, Kolkata, Mumbai, New Delhi and Thiruvananthapuram.

Pay and Allowances:
Scientist/Engineer'SC'
pay band of Rs. 15600-39100 with grade pay of Rs 5400/-.