3 write-ups · 9 questions

HackerRank Backend Engineer interview experience

Every HackerRank Backend Engineer interview written up on the site: the rounds, the questions asked, how candidates prepared and whether they got the offer.

HackerRank Backend Engineer interviews at a glance

Worked out from the 3 HackerRank Backend Engineer write-ups on this site.

interview write-ups
3
latest write-up
Sept 2026

What the rounds test

  • Data Structures & Algorithms7 · 78%
  • System Design2 · 22%

Question difficulty

  • Easy1 · 33%
  • Medium2 · 67%

Roles covered

Locations

Bangalore (1)

HackerRank Backend Engineer interview experiences1–3 of 3

Questions asked in HackerRank Backend Engineer interviews

  1. 01

    Tier-Aware Rate Limiter

    Data Structures & Algorithms

  2. 02

    Two Sum (HashMap variant)

    Data Structures & Algorithms · Easy

  3. 03

    Permutation Divisible by 8

    Data Structures & Algorithms · Medium

  4. 04

    Design a Test‑Taking Platform

    System Design

  5. 05

    Contiguous Array

    Data Structures & Algorithms · Medium

  6. 06

    Longest Subarray with at most one flip to make equal 0s and 1s

    Data Structures & Algorithms

  7. 07

    Longest Subarray with all Prefixes having ones >= zeroes

    Data Structures & Algorithms

  8. 08

    Suspicious User IDs from Transaction Logs

    Data Structures & Algorithms

  9. 09

    Design Hackerrank-like Online Coding Test Platform

    System Design

All HackerRank interview questions

HackerRank Backend Engineer interview FAQ

What does the HackerRank Backend Engineer interview focus on?

Across 3 HackerRank Backend Engineer interview experiences shared on Interview Experiences, the questions asked were mostly data structures & algorithms (78% of reported questions), system design (22% of reported questions).

How hard is the HackerRank Backend Engineer interview?

Candidates rated most HackerRank Backend Engineer questions as medium (67% of rated questions). Easy: 33%, Medium: 67%.

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