- I was submitted to FINRA via my recruiter @TekSystem - As screening process, my recruiter asked me 3 preliminary questions 1)4 principles of object oriented programing: polymorphism, inheritance, abstractions, encapsulation 3) 3 interfaces of a collection: Set, List, Map, etc.. 2) 8 balls are identical in size and color (but 7 same weight, 1 bigger weight), 1 weight balance, use it twice to find the 1 big ball - 1.5 week later, scheduled a video call with the Devops manager - experience question using Jenkins, AWS, Java as programming language - coding challenge: Using your preferred language - how to print content of textfiles of a directory and its nested directories - (In progress) they may call me for a F2F interview so far this my experience.