hi,

see isro has recruitment for various types of profile, however in recent years it has recruitment mostly comes for scientist b positions for engineers of civil, mechanical, electrical, ece profiles, however m.sc degree holders may apply for technical  assistant  positions. now if you are interested for technical profile I suggest you to do msc in remote sensing and gis after completing bsc in geography. gis specialist has wide career scope in mobile computing as well as satellite related working professionals.