I am in my final year of engineering and I had a year back thrice. How tough will it be for me to get a job? What would be the best career field I can easily get into as a fresher?

Dude, I had the same problem as u. I took admission for Bteck (IT) but i was not at all serious about my studies. I had year back thrice and with time i became shameless, but then i realized about my growing age and got depressed, But i didnt gave up, i prepared for GATE but couldn't qualify it, then i prepared for IELTS and got admission on UCL (U.K) and i completed MS (Computer science) on 2013, i wasn't having sponsorship or placement from any company and i was 25 already and thus i have to return back to India, I was broken but the thing was i wanted to do something. I went to my coaching classes again where i prepared GATE and prepared for subjects just as to make command on my subjects and parallel i was lining up some walkin interviews too, i gave 7 interviews in all types of big small MNC's for then was finally placed at IBM as Programming analyst with a handsome package. So i mean to say that it doesn't matter if we have backs, if your stream u have chosen have made u depressed and frustrated, then just fight with it. Just have command on core subjects what so ever stream u have. And if possible do certification of latest technology regarding your stream, Those MNC's , all they need is skill not our degree, Degree is just to get eligible with 60% . LOL (I know all this what i told you seems so stupid, as i went for MS and wasted money and all, but the fact is we were not so serious when others were studying). All the best