Dear Student ,

First of all,

ISRO conducts its own conducted exam ( generally known ISRO Centralized Recruitment Board ) to recruit various M.Sc Physics pass outs from premier Institutes like IIT or recognized Universities .

After qualifying the cut off , they can go for an interview session.

Note: Should score min 65% marks in UG and PG level

But, job positions can differ in each year based on the vacancies released by ISRO. Generally ISRO recruits these qualifiers as trainees in the section of Satellite Payloads  or Navigation or Propulsion . After then you can work as research and development section .

You're suggested to visit ISRO's website in career section for latest job vacancy update .

Hope you understand !