Design a Vehicle Simulation Replay Platform

Published 3 October 2026

Onsite Round 2 — Design a Vehicle Simulation Replay Platform

The 45-minute system design round asked me to design a simulator that could replay recorded footage of a vehicle completing a left turn.

Data Schema

The interviewer asked how the recorded simulation and vehicle data should be represented.

API Design

I needed to define the interfaces used to upload, retrieve, and replay a simulation.

Storage Design

The discussion also covered how the underlying video and simulation data should be stored.