Dream11.

The rounds, as candidates describe them

1. DSA60 minutes, virtual.source ↗
2. Database60 minutes, virtual; datastores and their internals, starting from your own projects.source ↗
3. System design (onsite)90 minutes in the Mumbai office; you set requirements and load, and every choice is questioned.source ↗
4. Hiring manager and HR (onsite)45-minute HM round and 30-minute HR round on the same day.source ↗

• Design a Metrics Monitoring and Alerting SystemSystem design
  IP-15 · Design a Metrics Monitoring and Alerting System →W10 · DAY 02 · Observability →reported in:LeetCode Discuss · Dream11 SDE-2 interview experience (2025) ↗LeetCode Discuss · Dream11 SDE-2 interview experience, offer (2024) ↗
• Design a Stock Exchange / Trading PlatformSystem design
  SQ-13 · Zerodha Kite Trading Platform →reported in:LeetCode Discuss · Dream11 SDE-2 2024 interview experience, offer (Design Zerodha/Groww) ↗LeetCode Discuss · Dream11 SDE-2, Dec 2024 offer (Design a stock broker) ↗
• Design lineup notifications sent before a match startsSystem design
  IP-06 · Design a Notification System →W06 · DAY 04 · Scale, Reliability & Edge Cases →W01 · DAY 04 · Hot Keys and Skew →reported in:LeetCode Discuss · Dream11 SDE-2 interview, not selected (2024) ↗
• Design a Real-Time LeaderboardSystem design
  IP-14 · Design a Real-Time Leaderboard →W01 · DAY 04 · Hot Keys and Skew →reported in:LeetCode Discuss · Dream11 SDE-2 interview, not selected (2024) ↗
• Design a Digital WalletSystem design
  IP-20 · Design a Payment System →W02 · DAY 02 · Idempotency in Practice →reported in:LeetCode Discuss · Dream11 SDE-2 interview, not selected (2024) ↗
• Design a message brokerLow-level design
  IP-18 · Design a Distributed Message Queue →LLD-08 · Design a Logging Framework (Pub-Sub) →reported in:LeetCode Discuss · Dream11 SSE interview experience (2024) ↗
• Isolation levels and pessimistic vs optimistic lockingConcept
  W05 · DAY 01 · Consistency Models →reported in:LeetCode Discuss · Dream11 SDE-2 interview, not selected (2024) ↗
• How does change data capture work?Concept
  W03 · DAY 02 · Transactional Outbox →reported in:LeetCode Discuss · Dream11 SDE-2 interview, not selected (2024) ↗
• How would you prepare your system for the IPL?Concept
  W10 · DAY 04 · Capacity Planning →W10 · DAY 03 · Deployment Strategies →reported in:LeetCode Discuss · Dream11 SDE-2 interview experience, offer (2024) ↗

• Design contest joining before the match deadlineSystem design
  W02 · BOSS · The Ultimate System Design Interview →W01 · DAY 04 · Hot Keys and Skew →W03 · DAY 03 · Backpressure and Flow Control →
• Design live score and points updates for millions of usersSystem design
  W04 · DAY 04 · Feed Caching →W08 · DAY 02 · Streaming vs Batch Processing →

Study path

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

1. 01IP-15Design a Metrics Monitoring and Alerting System
2. 02W10 · DAY 02Observability
3. 03SQ-13Zerodha Kite Trading Platform
4. 04IP-06Design a Notification System
5. 05W06 · DAY 04Scale, Reliability & Edge Cases
6. 06W01 · DAY 04Hot Keys and Skew
7. 07IP-14Design a Real-Time Leaderboard
8. 08IP-20Design a Payment System
9. 09W02 · DAY 02Idempotency in Practice
10. 10IP-18Design a Distributed Message Queue
11. 11LLD-08Design a Logging Framework (Pub-Sub)
12. 12W05 · DAY 01Consistency Models
13. 13W03 · DAY 02Transactional Outbox
14. 14W10 · DAY 04Capacity Planning
15. 15W10 · DAY 03Deployment Strategies
16. 16W02 · BOSSThe Ultimate System Design Interview
17. 17W03 · DAY 03Backpressure and Flow Control
18. 18W04 · DAY 04Feed Caching
19. 19W08 · DAY 02Streaming vs Batch Processing