Have almost 2 yoe as swe Backend. I have worked only in Java and nothing else. The work is related to data engineering cum backend. Worried about future on

Have almost 2 yoe as swe Backend. I have worked only in Java and nothing else. The work is related to data engineering cum backend. Worried about future on how to switch etc. Should go towards backend path or data engineering path. How to upskill and move ahead??

Ps: have acquired some knowledge of django, springboot, gcp etc. what else I should know??

Need Advice Backend SWE