Can anyone share experience about python backend developer?

[lampahome]

I have 3+years developer experience in python, but I always develop
about peer-to-peer service. Have no backend experience in python.

But now I want to change to backend engineer, somebody shares their
job is to do like
1. Develop customize API to receive data from global
2. Develop tools with k8s
3. Experience about NoSQL

After I heard above, it seems wide range and hard to start from scratch.

Without comparing performance with other languages, how to dig into
backend development?(Or some framework could help me?)

thx