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Interview questions from top companies, mapped to the exact round they show up in. Prep for what you will actually face.

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Online AssessmentDSA / CodingMachine CodingLow-Level Design

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The Loop aggregates publicly shared interview experiences and curated commonly-asked questions, each labeled with its source. Not affiliated with any company listed.

CC BY-NC 4.0 · © 2026

← Arista Networks

New Grad / Junior Backend at Arista Networks

BackendNew Grad / JuniorWithdrew◆ Commonly asked· 2024

A junior backend loop. Balanced across coding, design, and collaboration.

The loop · 5 rounds

01

Round 01 · 1 question

Online Assessment

Timed online coding / aptitude screen, usually the first filter.

  • Reformat a log file by timestamp.
    New Grad / JuniorEasy◆ Commonly asked
    #sorting#parsing
    PracticeGeeksforGeeks↗Search↗
02

Round 02 · 3 questions

DSA / Coding

Data structures & algorithms on a whiteboard or shared editor.

  • Implement a trie (prefix tree).
    New Grad / JuniorMedium◆ Commonly asked
    #trie
    PracticeLeetCode↗GeeksforGeeks↗
  • Word break.
    New Grad / JuniorMedium◆ Commonly asked
    #dp#string
    PracticeLeetCode↗GeeksforGeeks↗
  • 3Sum.
    New Grad / JuniorMedium◆ Commonly asked
    #two-pointers#array
    PracticeLeetCode↗GeeksforGeeks↗
03

Round 03 · 2 questions

Machine Coding

Build a working component or service under time pressure.

  • Build a URL health checker with a concurrency limit.
    New Grad / JuniorMedium◆ Commonly asked
    #concurrency
    PracticeGeeksforGeeks↗Search↗
  • Build a webhook receiver with signature verification.
    New Grad / JuniorMedium◆ Commonly asked
    #security#api
    PracticeGeeksforGeeks↗Search↗
04

Round 04 · 3 questions

Tech Deep-Dive

Deep questions on your core stack and fundamentals.

  • Trade-offs of gRPC vs REST vs GraphQL.
    New Grad / JuniorMedium◆ Commonly asked
    #api-design
    PracticeGeeksforGeeks↗Search↗
  • How do you prevent and detect N+1 queries?
    New Grad / JuniorMedium◆ Commonly asked
    #databases#orm
    PracticeGeeksforGeeks↗Search↗
  • Explain database indexing and when a query uses one.
    New Grad / JuniorMedium◆ Commonly asked
    #databases#indexing
    PracticeGeeksforGeeks↗Search↗
05

Round 05 · 2 questions

Behavioral / HR

Values, collaboration, and past-experience (STAR) questions.

  • Describe a time you disagreed with a teammate. How did it resolve?
    New Grad / Junior◆ Commonly asked
    #conflict#star
  • How do you handle competing priorities from two managers?
    New Grad / Junior◆ Commonly asked
    #prioritization#star

◆ This experience is composed from commonly reported questions for this role and level. Real, individually-shared interviews will be layered in over time.