Diploma

Dear akhil
since you are doing diploma in computer engineering,i would suggest you to go for bachelors in your stream as it will help you in your placements and even will help you in the better growth in your career as the market value of degree matters a lot .
there are many colleges that will provide you good education in case you go for bachelors:
1. IIT
2.NIT
3.Lovely Professional University Punjab
4.SRM
among these Lovely Professional University holds a good placement record for CSE as the major IT giants like HCl,CTS,Amazon etc visits the campus for hiring their students.
choose it wisely.
good luck

Lot of engineering colleges in India have provision of lateral entry for Diploma holders. You may evaluate lateral entry into BTech second year.

To become a Software engineer you are required to do BTech CS/ IT, BCA or BSc CS or Diploma in CS. You are required to complete +2 and seek admission in above mentioned graduation degrees. You can enroll in Diploma after 10th class. You can also learn software of you own and do various certification to become Software engineer. Unfortunately acceptance of this path in Indian IT industry is very poor. You may able to do individual software development assignment but may face challenges in getting a job.

Hello brother, there is no difference between b.tech and b.e. Be sure to choose a good college. Good luck. Thank you.