Hello aspirant,

YES, you can get admission in Btech in CSE (from 2nd year) after completing your 3 years Diploma course in CSE. This admission is known as Lateral entry admission. Now, since you have asked about the Job whether your class 12th marks will be of any value or not. I would like to tell you that your class 12th marksheet is not of any particular significance in applying for Jobs. The interviewer will only be interested in seeing your Diploma and your Graduation scores and performance. So, focus on this. Focus on improving your graduation score and extra academic activities and on coding skills, because this will definitely going to help you in getting good job.

I hope that this will help.