Fresh graduate tasked with architecture redesign. Is this normal?

I am a fresh grad 7/8 months out of college and I was recently handed a project to redesign a legacy and archaic service that has a very high QPS rather than the usual feature work. This forces me to

I am a fresh grad 7/8 months out of college and I was recently handed a project to redesign a legacy and archaic service that has a very high QPS rather than the usual feature work. This forces me to think about IDL definitions, storage design decisions, QPS considerations etc Is this a usual job scope for a fresh graduate?