AndroidHire Field Guide · Volume 19

Master OOP & Low-Level Design

Drive ambiguous LLD interviews to clean object models — SOLID, patterns, and 11 worked designs from parking lots to ride-hailing.

16 chaptersPaid subscriber guide∞ revisit anytime

Included with 3 and 12-month plans

01Build mental models

Understand why the patterns work, not just what to memorize.

02Connect to interviews

Turn technical depth into crisp, structured explanations.

03Apply with confidence

Use practical tradeoffs and examples when follow-ups get harder.

Inside the guide

Your chapter roadmap

This complete guide is available with 3 and 12-month plans.

  1. 01The LLD Interview, DecodedIncluded with 3 and 12-month plansSubscriber
  2. 02OOP in Kotlin, Not Java-in-KotlinIncluded with 3 and 12-month plansSubscriber
  3. 03SOLID, AppliedIncluded with 3 and 12-month plansSubscriber
  4. 04The Pattern ToolkitIncluded with 3 and 12-month plansSubscriber
  5. 05From Requirements to Class DiagramIncluded with 3 and 12-month plansSubscriber
  6. 06Tic-Tac-ToeIncluded with 3 and 12-month plansSubscriber
  7. 07Vending MachineIncluded with 3 and 12-month plansSubscriber
  8. 08Parking LotIncluded with 3 and 12-month plansSubscriber
  9. 09Elevator SystemIncluded with 3 and 12-month plansSubscriber
  10. 10ATMIncluded with 3 and 12-month plansSubscriber
  11. 11Library Management SystemIncluded with 3 and 12-month plansSubscriber
  12. 12ChessIncluded with 3 and 12-month plansSubscriber
  13. 13Movie Ticket BookingIncluded with 3 and 12-month plansSubscriber
  14. 14SplitwiseIncluded with 3 and 12-month plansSubscriber
  15. 15Ride-HailingIncluded with 3 and 12-month plansSubscriber
  16. 16Cache LibraryIncluded with 3 and 12-month plansSubscriber