Do they ask LC medium or hard? How difficult is their system design interview?
LC medium to hard, depending on the team.
Can you post your TC or base?
Totally depends on the team. I would say my experience, it was not like other companies expecting optimal almost mathematical solution and more of a valid solution with good code. Same for system design, not the standard "design Instagram/tinyurl/facebook feed/etc" question.
If you can code in python and Django and TC expect is low , you are bargain for them
This is completely false. We have nothing in django and little in python.
Not true. I know Tableau pays on par with FAANG.