No dear, it will not ruin your career. Very few students are able to secure their seats in Jadavpur University every year, you are one of them. Printing Engineering is genuinely a very good course. Your job profiles can be

• Printing Supervisor

• Printing Trainee Engineer

• Screen Room Printing Engineer

• Printing Officer

• Printing Technologists

Your job areas can be

• Digital Printing

• Electronic Printing

• Security Printing

• Textile Industry

• Automobile

• Advertising Companies

• Magazines

So all the best, you are doing good

Good luck !! Know more about your area of expertise

https://www.careers360.com/courses/b-tech-in-printing-technology