Try and talk to the other seniors? Last time I joined (fully remote) I asked all the other seniors for a 1 to 1 - not all replied but I learnt a huge amount about past projects, what people would have done differently and where the pain points were. Meant I could get a jump on the issues rather than find out slowly. You also get a sense of the weather and who you can vibe with. Oh yeah, taking notes about everything!