How to Ace the Low-level Design Interviews

Tips and strategies for cracking LLD interview

Photo by Jiroe on Unsplash

Introduction

Low-level Design rounds have become an integral part of the Tech hiring process. Few companies call it the Pair Programming round or Machine Coding round. Most of the companies ask open-ended questions like “Design a Vending Machine” in this round.

I have seen many candidates getting confused between High-level Design and Low-level Design rounds. Once I asked a candidate about an LLD problem, and they started attacking it as an HLD problem. It’s important to know the distinction and communicate during the interview.

HLD rounds assess an individual’s ability to design high-level components and scale the system. Whereas LLD gives insights into how well a candidate can model the software.

In this article, I’ll share the necessity of the LLD round and its importance. I’ll also cover the necessary skills, strategies, and resources to crack the LLD interviews.

Why Low-level design interview?

Candidates spend hours grinding Leetcode and memorizing common data structure problems. Additionally, they also dedicate time for System design and Behavioral interviews. Most of you may ask Why one more round? Is it…