Scale Engineer

Software Engineer

Software EngineerZP4Medium to Hard

This interview process is for a Software Engineer position at Zoom, specifically at the ZP4 level. It is designed to assess a candidate's technical skills, problem-solving abilities, and cultural fit within Zoom's collaborative environment.

Rounds·3

Timeline·~14d

Experience·2 - 5 yrs

Comp band·US$110000 - US$150000

Interview time·150 min

Evaluation

What they measure.

  • Problem-solving approach
  • Algorithmic thinking
  • Code quality and efficiency
  • Data structure knowledge

Preparation

How to prepare.

Tips

  1. Review fundamental data structures and algorithms.
  2. Practice coding problems on platforms like LeetCode and HackerRank.
  3. Study system design principles and common architectural patterns.
  4. Prepare examples for behavioral questions using the STAR method.
  5. Research Zoom's products, values, and recent news.
  6. Understand the technologies commonly used at Zoom (e.g., C++, Java, Python, WebRTC).

Study plan

Fig · Study plan — 04 phases

01 / 04
01

Phase 01 of 04

Data Structures and Algorithms

Weeks 1-2: Data Structures & Algorithms fundamentals. Practice coding.

Weeks 1-2: Focus on core data structures (arrays, linked lists, trees, graphs, hash maps) and algorithms (sorting, searching, dynamic programming, graph traversal). Practice coding problems related to these topics.

Questions

Commonly asked.

  • Given an array of integers, find the contiguous subarray with the largest sum.
  • Design a URL shortening service like bit.ly.
  • How would you design a system to handle real-time chat messages for millions of users?
  • Tell me about a time you disagreed with a teammate and how you resolved it.
  • What are the differences between TCP and UDP?
  • Explain the concept of microservices and their advantages/disadvantages.
  • How would you optimize a database query that is running slowly?
  • Describe a project you are particularly proud of and your role in it.

Locations

Regional differences.

Fig · Regions — 02 locations

01 / 02

Location

San Jose, USA

Interview focus

System Design for real-time collaboration featuresScalability and performance optimizationUnderstanding of distributed systems

Common questions

  • How would you design a real-time collaborative whiteboard for Zoom?
  • Discuss a challenging bug you encountered and how you debugged it.
  • Explain the trade-offs between different database solutions for a large-scale video conferencing platform.

Tips

  • Familiarize yourself with common distributed system patterns.
  • Be prepared to discuss trade-offs in system design choices.
  • Highlight experience with cloud platforms (AWS, Azure, GCP).

Rounds

Round-by-round.

Expand a step for evaluation criteria, sample questions, and prep notes.

DSA

Coding questions at Zoom.

Frequently reported on Zoom loops

View all at Zoom

Other guides

More at Zoom.