Citrus Pay Software Developer interview questions

gone through 6 rounds of F2F interview. if you know basic fundamentals of JAVA and data structures. then you are in. first round was coding rounds asked to write code for LRU cache. 2nd was DS and algo questions (Trees and Arrays related questions) 3rd was on puzzles and general probability questions. 4th was on design questions. asked me to design distributed system then further rounds on general discussions on projects and work in previous company. overall interview experience was awesome.