Questions d'entretien Software Team Lead chez Varonis Systems

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Varonis Systems

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Entretien pour Software Team Lead

7 oct. 2025

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at first the process was fine. recruiter and first interviewers were nice. in the second interview i saw massive red flags - group leader was rude and disrespectful, didn't bother to listen to a word i said. asked one of those system design question that if you don't the actual implementation behind the scenes there's no way you'll get it.. - Recruiter initial conversation - first technical interview the had both code and a bit of design parts - second technical interview - mostly system design but also super annoying quick questions like "how does opensearch works behind the scene", and afterwards an annoying system design question

Questions d'entretien [4]

Question 1

First interview: 1. "You are given an array prices where prices[i] is the price of a given stock on the ith day. You want to maximize your profit by choosing a single day to buy one stock and choosing a different day in the future to sell that stock. Return the maximum profit you can achieve from this transaction. If you cannot achieve any profit, return 0. Example 1: Input: prices = [7,1,5,3,6,4] Output: 5 Explanation: Buy on day 2 (price = 1) and sell on day 5 (price = 6), profit = 6-1 = 5. Note that buying on day 2 and selling on day 1 is not allowed because you must buy before you sell. Example 2: Input: prices = [7,6,4,3,1] Output: 0 Explanation: In this case, no transactions are done and the max profit = 0. [5,3,7,1,2,4] = 4"

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Question 2

First interview, 2nd question - discuss creating a method that receives multiple text files in this format: a, b, c, d where each letter represents a name. you need to count all names in all files. discuss the fact that you can't read the files into memory - use generators to have connections to the files, what if you have a lot of different customers, one with 10k files and one with 3 files and the first one called the method before the 2nd one - how do you prevent starvation for the second one?

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Question 3

2nd interview 1. a lot of annoying small questions - how does opensearch works - what is a lambda in aws - pros & cons - what is kafka, what are the main units of it and what is it used for - took 5 minutes to ask about a feature i worked on. didn't bother to listen and cut me off after a minute. - which qualities do you have that are good for managers? - what is the event loop (in the context of async.io)

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Question 4

2nd interview 2. design facebook newsfeed - only thing he cared about was about the "fanning out" part of calculating the feed as that's what facebook is doing - differentiating between "regular" people and "famous" people with a lot of followers, so when you calculate the news feed for someone upon login you'll take the regular people's posts from the db and the famous people's posts from somewhere else like a cache

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