If you are interested in CSE then in the CSSE also you will get the same essence with some more knowledge about system development. So you will learn some of the interesting topics in the genre of CSE as well as some extra topics from the system configuration and system engineering. See essentially both the courses are kind of same in terms of the core fields but there are be minute fluctuation which I can ascertain that if you really like CSE then you will get more interested for the subject.

So its a good choice and you can join without any second thoughts.

To know more about CSE visit the link below:

https://www.careers360.com/courses/computer-science-engineering-course

To know more about the career of Computer System Engineer visit the link below:

https://www.careers360.com/careers/computer-systems-engineer

I hope this answer helps. All the very best for your future endeavors!