Should I switch from data to backend

I am a final year cse student,got.placed as an associate data scientist/engineer at tredence analytics at 12lpa,I was trying for backend roles but couldn't get in as i used to get rejected after reaching the last round due to 1-2 intake bcz of recession. My joining is in August i tredence,should i keep my quest for switching to backend roles after working in tredence or move forward in data engineering as this role also looks very promising (I know my question is very subjective but i am okay with either roles as long as I am able to increase my package as money has been the only source of motivation till now for me , coming from a middle class family) How easy is it to shift to backend roles after being in data roles?