Notes from OP
Compensations are in GBP. On top of the base salary, I also receive an amount of 7000 GBP per year paid monthly (travel allowance benefit which I can spend in whatever I like, not necessarily for travel).
I was offered a job as a SDE I from the start. It wasn't based on my interviews, and I feel like I should have been offered a position as SDE II. That makes me hesitate about declining or accepting the offer. Plus, I don't live in Europe and I wasn't offered a relocation package.