hello aspirant,

yes a computer science graduate can apply in railway rrb junior engineer exam. this year vacancy was for railway office and in accounts departments. from the past several years isro and drdo , two most famous research institute hiring computer science graduates. 

however computer science engineers has most vacancy in private sector companies. like tcs, ibm, cts, infosys etc.

Hello,

Yes, the candidate who has completed his graduation from CSE Stream can also apply for the Railway exams.

There are other more career options for CSE student if he wanted to work in the government sector.