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Prep/Companies/Ola

Mobility · Bengaluru

O

Ola.

Ride-hailing across cars, autos and bikes, with driver dispatch, pricing and maps; the group also makes Ola Electric scooters.

its questions lean on

driver tracking and matching
ride pooling
notifications
rate limiting
booking at scale

The rounds, as candidates describe them

Problem solving and data structures60 minutes of DSA.source ↗
LLD and HLD90 minutes with an engineering manager; full HLD plus LLD components, skeleton code, APIs and DB schemas.source ↗
Hiring managerBehavioural questions and offer discussion.source ↗

Reported by candidates

From public interview write-ups; each links its source.

Design a Notification SystemSystem design
IP-06 · Design a Notification System →W06 · DAY 01 · Designing a Real-Time Notification Platform →reported in:LeetCode Discuss · Ola SDE-2 offer, July 2024 ↗
Design an internal app to track driversSystem design
IP-13 · Design a Proximity Service →SQ-09 · Uber →reported in:LeetCode Discuss · Ola SDE-2 offer, Nov 2021 ↗
Design ride poolingSystem design
SQ-09 · Uber →IP-13 · Design a Proximity Service →reported in:LeetCode Discuss · Ola SDE-2 offered (2021) ↗
Design a Food Delivery SystemSystem design
SQ-17 · Swiggy Food Delivery →W06 · BOSS · Food Delivery Order System →reported in:LeetCode Discuss · Ola SDE-2 offered (2021) ↗
Design a train booking system like IRCTCSystem design
SQ-11 · IRCTC Tatkal Ticket Booking System →LLD-05 · Design a Movie Ticket Booking System →reported in:LeetCode Discuss · Ola SDE-3, Feb 2022 ↗
Design a Video Streaming ServiceSystem design
SQ-06 · Netflix Streaming →SQ-19 · YouTube Video Platform →reported in:LeetCode Discuss · Ola SDE-2 interview, Aug 2022 ↗
Design a Rate LimiterSystem design
IP-02 · Design a Rate Limiter →W01 · DAY 03 · Rate Limiting at Scale →reported in:LeetCode Discuss · Ola Cabs SDE-II backend offer, April 2021 ↗
Parse JSON from a URL and answer count queriesLow-level design
no lesson for this one yetreported in:LeetCode Discuss · Ola Cabs SDE-II backend offer, April 2021 ↗

Likely, from what they build

Our pick, not a report: questions that fit Ola's products.

Design a Ride-Hailing ServiceSystem design
SQ-09 · Uber →IP-13 · Design a Proximity Service →W01 · DAY 04 · Hot Keys and Skew →
Design surge pricingSystem design
SQ-09 · Uber →W08 · DAY 02 · Streaming vs Batch Processing →
Design a Proximity ServiceSystem design
IP-13 · Design a Proximity Service →
Design telemetry ingestion for connected electric scootersSystem design
W08 · DAY 01 · Event Ingestion at Scale →IP-15 · Design a Metrics Monitoring and Alerting System →W08 · DAY 04 · Late-Arriving Data and Correctness →

Study path

Every lesson the questions above point to, once, in order.

01IP-06Design a Notification System
02W06 · DAY 01Designing a Real-Time Notification Platform
03IP-13Design a Proximity Service
04SQ-09Uber
05SQ-17Swiggy Food Delivery
06W06 · BOSSFood Delivery Order System
07SQ-11IRCTC Tatkal Ticket Booking System
08LLD-05Design a Movie Ticket Booking System
09SQ-06Netflix Streaming
10SQ-19YouTube Video Platform
11IP-02Design a Rate Limiter
12W01 · DAY 03Rate Limiting at Scale
13W01 · DAY 04Hot Keys and Skew
14W08 · DAY 02Streaming vs Batch Processing
15W08 · DAY 01Event Ingestion at Scale
16IP-15Design a Metrics Monitoring and Alerting System
17W08 · DAY 04Late-Arriving Data and Correctness

Company names and logos are trademarks of their owners, shown only to identify each company. This course isn't affiliated with or endorsed by any of them.

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