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Ola Coding Interview Questions: DSA, LLD and Ride-Hailing Systems

Ola, the Bengaluru ride-hailing company run by ANI Technologies and renamed Ola Consumer in 2024, hires engineers for its mobility apps and the platforms behind them. Candidate reports describe a DSA round, a low-level design or machine coding round, a high-level design round for SDE-2 and above, and a hiring manager conversation.

Ola, the Bengaluru ride-hailing company run by ANI Technologies and renamed Ola Consumer in 2024, hires engineers for its mobility apps and the platforms behind them. Candidate reports describe a DSA round, a low-level design or machine coding round, a high-level design round for SDE-2 and above, and a hiring manager conversation. This page covers what Ola builds and who it hires, the process candidates commonly report, the technical depth the teams care about, representative problem types, what interviewers score, and a three-week prep plan.

What Ola builds and who it hires

Ola's engineers build ride booking and dispatch, the rider and driver apps, pricing, payments and the mapping stack. In July 2024 Ola moved its cab app from Google Maps to its own Ola Maps, which the company said would save about ₹100 crore a year, after moving its cloud workloads to Krutrim. Earlier that year it closed its ride-hailing operations in the UK, Australia and New Zealand to focus on India. Ola Electric and the AI company Krutrim share a founder with Ola but are separate companies that hire separately.

What the process tends to look like

StageWhat happensHow to prepare
Recruiter call or referralRole, level (SDE-1, SDE-2 or SDE-3), team and timelineKnow the product, the team and your own résumé in detail
Online test (campus and some drives)Timed coding problems before the interviewsMedium graph, DP and array problems
DSA roundAbout an hour; reports describe one or two problems, sometimes a choice between twoGraphs with hash maps and sets, linked lists and LRU caches
LLD or machine codingDesign the classes for a component and write working code, often within about an hourSOLID principles, clean interfaces and thread safety
HLD (SDE-2 and above)A design discussion; one 2024 report combined LLD and HLD in a single 90-minute roundLocation tracking, dispatch, streaming and rate limiting at scale
Hiring manager and HRProjects, decisions under ambiguity, and topics such as circuit breakers, schedulers, load balancing and cachingTwo stories about production problems you owned

Processes differ by team, level and office and change over time, so treat this as the common shape candidates report and confirm the specifics with your recruiter.

DSA, LLD and ride-hailing systems

LLD that runs. Ola candidates describe a round labelled machine coding or LLD in which they designed and coded a component, such as an API rate limiter or a JSON parser, inside about an hour. Expect follow-ups on extending the design and on concurrency; one 2022 candidate's advice was to be ready to write sample code for any LLD answer.

Core Java and back-end fundamentals. An October 2025 report describes a round dedicated to core Java between the DSA and system design rounds. Review collections and their internals, concurrency utilities, and how you would make a service resilient with timeouts, retries and circuit breakers, because hiring managers ask about these too.

Ride-hailing design. Natural design topics are matching riders to nearby drivers, ingesting frequent driver location updates, surge pricing by zone, and estimating arrival times from map data. Ola's move to its own maps makes geospatial indexing, such as geohashes or grid cells, worth knowing well.

Representative problem types

These are the kinds of problems candidates describe, not a leaked question list. Practice the category, not the exact question.

  1. Implement an LRU cache with a doubly linked list and a hash map.
  2. Design and code an API rate limiter with per-user limits.
  3. Match a rider to the nearest available drivers using a spatial index.
  4. Design driver location ingestion and a live trip-tracking view.
  5. Design surge pricing by zone from supply and demand.
  6. Graph problems that combine traversal with hash maps and sets.
  7. Design a logging library or an in-memory message broker.

What interviewers score

The behavioral side

Technical rounds decide most outcomes, but every Ola loop also asks about how you work. Prepare a short story for each of these, with a result and what you learned:

Structures and sample answers for the common questions are in our software engineer behavioral answers guide.

A three-week prep plan

  1. Week 1: practical coding: build small features against an API, parse and transform data, and write tests, in the language you will interview in.
  2. Week 2: system design for the company's domain, plus two behavioral stories about shipping and fixing something under pressure.
  3. Week 3: timed mixed problems, a mock interview every other day, and research into the product and its engineering blog.

For practice lists, use LeetCode company-tagged questions, the Striver A2Z sheet or the Love Babbar 450 sheet, and if your drive starts with a test, read our guide to new-grad online assessments.

Where CoPilot Interview fits

Most of a Ola loop is spoken: you explain an approach, defend a trade-off and talk through your past work. CoPilot Interview is an AI interview assistant whose free AI mock interview builds technical and behavioral questions from your résumé and the job description, reads them aloud and scores each spoken answer out of ten, so you can rehearse the explanation as well as the code. The free plan gives 15 minutes a day of live help in sessions of up to 15 minutes, with AI mock interviews included. Online assessments and many coding rounds forbid outside help, so practice beforehand and follow your employer's rules on the day.

Disclosure: CoPilot Interview is our product, so weigh what we say about it accordingly.

Frequently asked questions

What programming language should I use in a Ola interview?

Use your strongest language for DSA. Java appears most often in candidate reports, and one recent loop included a core Java round, so if your résumé lists Java, review it in depth.

Does Ola send an online assessment?

Campus and some off-campus drives start with a timed coding test; experienced candidates more often start with a recruiter call and a DSA round. Our <a href="/blog/hackerrank-assessment-guide">HackerRank assessment guide</a> covers the common format.

Is Ola the same company as Ola Electric and Krutrim?

No. Ola Consumer, the ride-hailing business run by ANI Technologies, Ola Electric and Krutrim share a founder but are separate companies with their own hiring and their own interview loops. Check which entity your role belongs to before you prepare.

How should I prepare for Ola coding questions?

Practice practical problems under time limits, build small features against an API in your interview language, and prepare one system design in Ola's domain. Explain every solution out loud, because follow-up questions about trade-offs matter as much as the first answer.

Can I use AI tools in a Ola interview?

Only if the instructions you receive say so. Online assessments and live coding rounds generally forbid outside help, and some companies now state their AI policy in the invitation. Use AI to practice beforehand, and follow your employer's rules.

Practice this interview before the real one

The AI mock interview builds questions from your resume and the job description, reads them aloud and scores each spoken answer out of 10. Included on the free plan.

Start a mock interview