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      Arista Networks

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      Software Engineer Interview

      15 Jun 2020
      Anonymous interview candidate
      No offer
      Positive experience

      Application

      I interviewed at Arista Networks

      Interview

      There were three rounds of interviews. Questions were based on coding, how better you understand/debug the code, OS, networks, system design 1. Coding round 2. Code, OS based questions, Output of C program 3. Networking, OS, system design, Code debugging

      Interview questions [13]

      Question 1

      Round 1, Coding: The question was based on IP fragmentation, where data length was divided into multiples of MTU(maximum transmission unit). Defragment all the received fragments into one packet.
      Answer question

      Question 2

      Round 2: Asked to code (array question), questions based on code I had written, test with multiple cases.
      Answer question

      Question 3

      Questions on Process memory structure. Stack, heap etc.
      Answer question

      Question 4

      OS based questions: Threads, Multitasking [My code (in step 1) behaviour in multiprocessor environment], Paging, virtual memory, context switching, dispatcher etc.
      Answer question

      Question 5

      Given a C program snippet, what will be its output, more questions around it.
      Answer question

      Question 6

      My current role in office.
      Answer question

      Question 7

      Round 3: Basic questions on networking.
      Answer question

      Question 8

      OS questions: system call? static/dynamic linking? Virtual memory? Process Vs Threads? Deadlock case? How to handle shared data between threads?
      Answer question

      Question 9

      Questions on college project
      Answer question

      Question 10

      System design: Design a system which converts long URL into short URL. Need to handle insert/search, algorithm to have unique short URL for all long URL
      Answer question

      Question 11

      Buggy code snippet, identify the issues and suggest the solutions
      Answer question

      Question 12

      link list: Handle insert/delete/get for all data types (int/char/struct) using single link list struct.
      Answer question

      Question 13

      Design own library to handle dynamic allocation/deallocation of memory. What data structure to maintain these information?
      Answer question
      11

      Other Software Engineer interview reviews for Arista Networks

      Software Developer Interview

      8 May 2026
      Anonymous interview candidate
      Vancouver, BC
      No offer
      Positive experience
      Average interview

      Application

      I interviewed at Arista Networks (Vancouver, BC)

      Interview

      Pretty good, not too complicated, was comfortable. Mostly LC questions, and was easy enough that you should be able to do it after doing NC150. good luck for the interview!

      Software Engineer Interview

      5 May 2026
      Anonymous interview candidate
      No offer
      Neutral experience
      Average interview

      Application

      I interviewed at Arista Networks

      Interview

      Starts with online test, then three rounds of technical interviews follow. Not a lot of discussion, just go straight to the technical challenges which have to be solved in time

      Software Engineer Interview

      15 Apr 2026
      Anonymous employee
      Warsaw, Masovia
      Accepted offer
      Positive experience
      Average interview

      Application

      I interviewed at Arista Networks (Warsaw, Masovia)

      Interview

      By now I have had only first interview, that was focused on pure DSA. Despite that I would already recommend checking out gdb, cause it came in handy in my case.

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