I\'m here to share my experience of my interview with Facebook for E5 position and give back to the community. \nBackground:\n8 YOE senior full-stack engineer. Contacted by a recruiter via LinkedIn.\n\nPhone screen (45 minutes):\n1 graph (BFS/DFS) kind of question, coded the solution but took 25 minutes.\n1 BST traversal question, interviewer thought there might not be enough time to code, so I talked through my approach and achieved optimal complexity.\nFinished 10 minutes early as a result (if I were to code it would probably take up the whole 45 minutes for both questions).\nGot a response from recruiter the same day for an invite to "on-site".\n\nFull-loop:\n3 rounds of coding (2 problems each round)\n1 round of system design (1 problem)\n1 round of behavioral/coding with a hiring manager (1 coding problem)\nEach round was 45 minutes (I was told there would be 2 coding rounds instead of 3, but they are trying to train more interviewers so I got an extra coding round)\nCoding problems involved string manipulation, BST traversal, sliding window on arrays, alien dictionary validation, linked lists. 6 of the problems were medium level and 1 is probably a hard.\nSystem design involved designing backend of some online shopping website. Topics involved caching, sharding, load-balancing, optimizing db writes, all that good stuff.\n\nFinished all the coding rounds at least 10 minutes before allocated time with optimal solutions, got 1 runtime complexity wrong even though the code was optimal..\nFinished the system design round 15 minutes early and the interviewer literally said he had no follow up questions he could think of.\nFor the behavioral/coding round, behavior questions took about 20 minutes, finished the coding problem in 10, and the rest 15 minutes the hiring manager basically told me a whole lot of "why you should join fb".\n\nNow the waiting game starts.\n\nFor people preparing, definitely solve the top 50 facebook-tagged problems. Focus on medium problems, and solve a few hard ones. I also solved or read solutions of all the facebook problems under the "explore" tab. Gro-k-k-ing the system design interview helped me to get a structured way to solve system design problems. You don\'t need to read through the whole thing, after a handful of problems you\'ll see the pattern.\n\nStudy hard, and it pays off. Good luck everyone!\n\nP.S.\nAnyone with experience knows how long it normally takes to hear back from Facebook?

I\'m here to share my experience of my interview with Facebook for E5 position and give back to the community. \nBackground:\n8 YOE senior full-stack engineer. 