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Prep/Companies/JioHotstar

Media & streaming

J

JioHotstar.

India's largest premium streaming platform (formed in 2025 from Disney+ Hotstar and JioCinema), with films, series in over 19 languages and live sport at massive concurrency.

its questions lean on

video playback and watch history
live-event traffic spikes
event analytics pipelines
recommendations
LLD with working Java code

The rounds, as candidates describe them

CodingDSA problems; candidates report one or two coding rounds.source ↗
LLDEntity and class design with working code, often a Hotstar-flavoured problem.source ↗
HLDA high-level design round, sometimes with back-of-the-envelope estimates, API contracts and sharding.source ↗
Hiring managerBehavioural questions and past work.source ↗

Reported by candidates

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

Design a Continue-Watching (Resume Video) FeatureSystem design
SQ-06 · Netflix Streaming →W01 · DAY 05 · Session Store Design →reported in:LeetCode Discuss · SDE2, Disney+Hotstar, Bangalore (2021) ↗
Design Video View Counts and Watch HistorySystem design
IP-16 · Design an Ad Click Aggregation System →W01 · DAY 04 · Hot Keys and Skew →SQ-19 · YouTube Video Platform →reported in:LeetCode Discuss · SDE2, Disney+Hotstar, Bangalore (2021) ↗
Design a Calendar App like Google CalendarLow-level design
IP-06 · Design a Notification System →reported in:LeetCode Discuss · Hotstar SDE2, Bangalore (2022) ↗
Design a Recommendation System for a Streaming AppSystem design
SQ-06 · Netflix Streaming →W08 · DAY 02 · Streaming vs Batch Processing →reported in:LeetCode Discuss · Hotstar SDE2, Bangalore (2022) ↗
Design a Threaded Comment System like YouTube'sSystem design
SQ-19 · YouTube Video Platform →W04 · DAY 04 · Feed Caching →reported in:LeetCode Discuss · Hotstar SDE 2, Data Engineer, April 2024 ↗
Design a Unified User Profile Fed by Many Teams (LLD)Low-level design
W08 · DAY 03 · Data Modeling for Analytics →W08 · DAY 02 · Streaming vs Batch Processing →reported in:LeetCode Discuss · Hotstar SDE 2, Data Engineer, April 2024 ↗
Design a Stock Exchange / Trading PlatformLow-level design
SQ-13 · Zerodha Kite Trading Platform →reported in:LeetCode Discuss · Hotstar SDE2, Remote/India, June 2024 ↗
Design a Food Delivery SystemSystem design
SQ-17 · Swiggy Food Delivery →W06 · BOSS · Food Delivery Order System →reported in:LeetCode Discuss · Hotstar SDE2, Remote/India, June 2024 ↗
Design an Ad-Playback Analytics PipelineSystem design
W08 · DAY 01 · Event Ingestion at Scale →IP-16 · Design an Ad Click Aggregation System →W08 · BOSS · Real-Time Analytics for Video Streaming Platform →reported in:LeetCode Discuss · HotStar SDE-2, Bengaluru, Feb 2022 ↗
Design a URL ShortenerSystem design
IP-01 · Design a URL Shortener →W01 · BOSS · Design a URL Shortener at Scale →reported in:LeetCode Discuss · Hotstar SDE2, Remote/India, July 2024 ↗
Design a Movie Ticket Booking System (LLD)Low-level design
LLD-05 · Design a Movie Ticket Booking System →SQ-16 · BookMyShow Seat Booking →reported in:LeetCode Discuss · Disney+Hotstar SDE1, Bangalore, April 2021 ↗LeetCode Discuss · Disney+Hotstar SDE1, Aug-Sept 2021 ↗
Implement a Queueing Service as a LibraryLow-level design
IP-18 · Design a Distributed Message Queue →LLD-08 · Design a Logging Framework (Pub-Sub) →reported in:LeetCode Discuss · Disney+Hotstar SDE1, Bangalore, April 2021 ↗
Design a Chat SystemSystem design
IP-08 · Design a Chat System →SQ-02 · WhatsApp Messaging →reported in:LeetCode Discuss · Disney+Hotstar SDE1, Aug-Sept 2021 ↗

Likely, from what they build

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

Design Live Streaming of a Cricket Match to Tens of Millions of ViewersSystem design
SQ-06 · Netflix Streaming →W04 · DAY 03 · Thundering Herd →W10 · DAY 04 · Capacity Planning →

Study path

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

01SQ-06Netflix Streaming
02W01 · DAY 05Session Store Design
03IP-16Design an Ad Click Aggregation System
04W01 · DAY 04Hot Keys and Skew
05SQ-19YouTube Video Platform
06IP-06Design a Notification System
07W08 · DAY 02Streaming vs Batch Processing
08W04 · DAY 04Feed Caching
09W08 · DAY 03Data Modeling for Analytics
10SQ-13Zerodha Kite Trading Platform
11SQ-17Swiggy Food Delivery
12W06 · BOSSFood Delivery Order System
13W08 · DAY 01Event Ingestion at Scale
14W08 · BOSSReal-Time Analytics for Video Streaming Platform
15IP-01Design a URL Shortener
16W01 · BOSSDesign a URL Shortener at Scale
17LLD-05Design a Movie Ticket Booking System
18SQ-16BookMyShow Seat Booking
19IP-18Design a Distributed Message Queue
20LLD-08Design a Logging Framework (Pub-Sub)
21IP-08Design a Chat System
22SQ-02WhatsApp Messaging
23W04 · DAY 03Thundering Herd
24W10 · DAY 04Capacity Planning

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