System Design Mock Interview - A 45-Minute Senior Engineer Simulation

Public lesson preview

A complete system design walkthrough for a food delivery platform - requirements, API design, architecture, deep dives, and scaling - structured exactly like a real senior engineer interview.

Learning objectives

By the end of this lesson, you will understand:

• ✓🎯 The Problem: Design a Food Delivery System
• ✓Phase 1: Requirements Gathering (5 minutes)
• ✓Phase 2: API Design (5 minutes)
• ✓Phase 3: High-Level Architecture (10 minutes)
• ✓Phase 4: Deep Dive - Critical Components (15 minutes)

Lesson outline

1. 🎯 The Problem: Design a Food Delivery System
2. Phase 1: Requirements Gathering (5 minutes)
3. Phase 2: API Design (5 minutes)
4. Phase 3: High-Level Architecture (10 minutes)
5. Core Services
6. Communication Patterns
7. Phase 4: Deep Dive - Critical Components (15 minutes)
8. Driver Matching Algorithm
9. Real-Time Order Tracking
10. Estimated Delivery Time
11. Payment Processing
12. Phase 5: Scaling and Bottlenecks (10 minutes)
13. Database Scaling
14. Handling Peak Load (Surge)
15. Single Points of Failure
16. 💡 Interview Tips
17. 🎯 Key Takeaways
18. 📚 Further Reading