Ola Backend Engineer interview questions and process

Updated · 8 sources

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Candidates rate the Ola Backend Engineer interview Medium-Hard: Backend Engineer write-ups show a 60-min OA plus 90-min LLD/HLD and system design rounds, with DP, LCA, and rate-limiter design appearing in real reports. Reports describe 5 rounds, from Online Assessment (SQL + DS/Algo) to Hiring Manager / Senior TA, with about 1-3 weeks when all rounds are compressed into one day (reported by multiple candidates); otherwise 2-4 weeks from first call to offer.

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Ola Backend Engineer interview rounds

  1. Online Assessment (SQL + DS/Algo): OA runs about 60 minutes: a short SQL section plus 2-3 DS/Algo problems (one report had longest substring without repeating characters, validate BST, and a largest-number rearrangement).
  2. Problem Solving / DS-Algo
  3. Machine Coding / LLD
  4. High-Level System Design
  5. Hiring Manager / Senior TA

Questions reported in Ola Backend Engineer interviews

  1. Why should we hire you?
  2. What do you know about this company?
  3. What is your biggest achievement till now?
  4. What did you do during lockdown?
  5. Some basic questions like Why OLA ?
  6. Find valley elements in an array.
  7. Increasing subsequence maximum sum.
  8. Print all permutations of a string.

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Ola Backend Engineer interview: quick answers

How many rounds are in the Ola Backend Engineer interview?

Public reports describe 5 rounds for the Ola Backend Engineer interview: (1) Online Assessment, (2) Problem Solving / DS-Algo, (3) Machine Coding / LLD, (4) High-Level System Design, (5) Hiring Manager / Senior TA. Reported time to a result: 1-3 weeks when all rounds are compressed into one day (reported by multiple candidates); otherwise 2-4 weeks.

Is the Ola interview difficult?

Public reports put the Ola Backend Engineer interview at Medium-Hard difficulty. Backend Engineer write-ups show a 60-min OA plus 90-min LLD/HLD and system design rounds, with DP, LCA, and rate-limiter design appearing in real reports. The process has 5 rounds, from Online Assessment to Hiring Manager / Senior TA.

Does Ola ask DSA in Backend Engineer interviews?

Yes. Rounds that involve coding: Machine Coding / LLD. Reported coding questions include "Find valley elements in an array" and "Print all permutations of a string". Data structures and algorithms (DP, trees, linked lists) is among the skills reports mention most.

How long does Ola take to give results?

Time to a result for the Ola Backend Engineer process, per public reports: 1-3 weeks when all rounds are compressed into one day (reported by multiple candidates); otherwise 2-4 weeks. The process has 5 rounds, from Online Assessment to Hiring Manager / Senior TA.

Sources

Based on 8 public reports: LeetCode Discuss (6), YouTube (2), last updated Sep 2026.

Compiled by Adarsh Sharma from public candidate reports. Unofficial guide: PortLume AI is not affiliated with Ola.

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