Dear Aspirant,

The course and syllabus that is studied over by a CS in India is very country specific. The information studied, the laws learnt are all in accordance to the Indian system. Every country has its own set of laws, corporate laws, taxation laws, etc. These laws are not universal i.e. they are not same for every country in the world. Thus, whatever a CS studies in India (native nation) would be irrelavant in Abroad. That's why it is tough for a CS to get a job abroad.

If a  CS aspires to get a job in Abroad, he/she will have to clear certain papers through the medium of examinations. He/she would have to select the country where he/she wants to work in and accordingly study papers related to the system of that country. 

There are many flexible job opportunities in the South Asian countries that accepts CS through ceetaic entrance like examinations. Good luck!