Zoho.

The rounds, as candidates describe them

1. Aptitude and technical MCQ90 minutes of aptitude and programming-output questions.source ↗
2. Coding assessmentAbout 3 hours of DSA problems of rising difficulty.source ↗
3. Advanced programming (LLD)A 3-hour console application with many modules, such as a railway reservation system; output must work for the given inputs.source ↗
4. Technical interviewsIn-depth discussion, then an HLD round (an online ticket booking platform) with an algorithm question.source ↗
5. HRPersonal and behavioural round, then package discussion.source ↗

• Design a Railway Ticket Reservation System (LLD)Low-level design
  SQ-11 · IRCTC Tatkal Ticket Booking System →LLD-05 · Design a Movie Ticket Booking System →reported in:LeetCode Discuss · Zoho Corporation MTS, Chennai (2024) ↗GeeksforGeeks · Zoho Interview Experience for Level 2 Software Developer, On-Campus (2023) ↗
• Design a Ticket Booking SystemSystem design
  SQ-16 · BookMyShow Seat Booking →LLD-05 · Design a Movie Ticket Booking System →reported in:LeetCode Discuss · Zoho Corporation MTS, Chennai (2024) ↗
• Design a Call Taxi Booking Application (LLD)Low-level design
  SQ-09 · Uber →reported in:LeetCode Discuss · ZOHO Corporation SDE Full Time (2023) ↗GeeksforGeeks · Zoho Interview Set 3, Off-Campus (2025) ↗
• Design a Parking LotLow-level design
  LLD-01 · Design a Parking Lot →reported in:GeeksforGeeks · ZOHO Interview Experience for SDE, On-Campus (2023) ↗
• Design an In-Memory File SystemLow-level design
  no lesson for this one yetreported in:GeeksforGeeks · Zoho Interview Experience, On-Campus (2024) ↗
• Design an In-Memory Key-Value Store with Transactions (LLD)Low-level design
  IP-03 · Design a Distributed Key-Value Store →W05 · DAY 01 · Consistency Models →reported in:GeeksforGeeks · Zoho Interview Experience, Off Campus, Feb 2024 ↗
• Design a Library Management SystemLow-level design
  no lesson for this one yetreported in:GeeksforGeeks · ZOHO Interview Experience, On-Campus (2025) ↗
• Design a Task Manager Application (LLD)Low-level design
  no lesson for this one yetreported in:GeeksforGeeks · ZOHO Interview Experience for Fresher 2025, Off-Campus ↗
• Design a Support Ticket-Raising Application (LLD)Low-level design
  W09 · BOSS · Design a Multi-Tenant Enterprise SaaS Platform →reported in:LeetCode Discuss · Zoho Software Developer, Off-Campus, Chennai (2023) ↗
• Implement an In-Memory Cache like Redis in Java (LLD)Low-level design
  LLD-02 · Design an LRU Cache →IP-11 · Design a Distributed Cache →reported in:LeetCode Discuss · Zoho Technical Staff, Off Campus, Chennai (2020) ↗
• Design Browser History (LLD)Low-level design
  no lesson for this one yetreported in:GeeksforGeeks · Zoho Corporation Interview Experience Software Developer (2024) ↗

• Design an Email Service like Zoho MailSystem design
  W06 · DAY 01 · Designing a Real-Time Notification Platform →W07 · DAY 02 · Indexing Pipeline →IP-10 · Design a File Sync Service (Dropbox / Google Drive) →
• Design a Multi-Tenant CRM PlatformSystem design
  W09 · BOSS · Design a Multi-Tenant Enterprise SaaS Platform →W09 · DAY 01 · Tenant Isolation Strategies →W09 · DAY 03 · Data Residency and GDPR →

Study path

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

1. 01SQ-11IRCTC Tatkal Ticket Booking System
2. 02LLD-05Design a Movie Ticket Booking System
3. 03SQ-16BookMyShow Seat Booking
4. 04SQ-09Uber
5. 05LLD-01Design a Parking Lot
6. 06IP-03Design a Distributed Key-Value Store
7. 07W05 · DAY 01Consistency Models
8. 08W09 · BOSSDesign a Multi-Tenant Enterprise SaaS Platform
9. 09LLD-02Design an LRU Cache
10. 10IP-11Design a Distributed Cache
11. 11W06 · DAY 01Designing a Real-Time Notification Platform
12. 12W07 · DAY 02Indexing Pipeline
13. 13IP-10Design a File Sync Service (Dropbox / Google Drive)
14. 14W09 · DAY 01Tenant Isolation Strategies
15. 15W09 · DAY 03Data Residency and GDPR