I am looking for suggestion and guidance. Currently I am working at a startup which is mainly focusing on financial services and data exploration. I am working as an software engineer (mainly focusing on data/distributed systems)
I am getting interview calls from good companies like LinkedIn, FB, Apple and Microsoft for cloud related positions but I am afraid to attend those as people said no matter for which position they are recruiting they are looking for strong data structure skills and currently I am not that strong in DS/Algo.
What should I focus to make sure I can crack those or at least I conquered the fear to attend them? Also is it true that if they reject candidates in phone calls then it’s hard to reconsider them after 6 months or a year.