Scale Engineer

Senior Engineer

Software EngineerP4Hard

The Senior Engineer (P4) interview process at Zillow is designed to assess a candidate's technical expertise, problem-solving abilities, system design skills, and cultural fit. It typically involves multiple rounds, including technical interviews, a system design interview, and a behavioral interview, culminating in a hiring manager discussion.

Rounds·4

Timeline·~14d

Experience·5 - 10 yrs

Comp band·US$140000 - US$180000

Interview time·180 min

Evaluation

What they measure.

  • Technical proficiency in relevant programming languages and frameworks.
  • Problem-solving skills and analytical thinking.
  • Ability to design scalable and robust systems.
  • Communication and collaboration skills.
  • Leadership potential and ability to mentor others.
  • Alignment with Zillow's values and culture.

Preparation

How to prepare.

Tips

  1. Review fundamental computer science concepts (data structures, algorithms, operating systems, databases).
  2. Practice coding problems on platforms like LeetCode, HackerRank, or Coderbyte, focusing on medium to hard difficulty.
  3. Study system design principles and common architectural patterns (e.g., microservices, caching, load balancing, message queues).
  4. Prepare to discuss your past projects in detail, highlighting your contributions, challenges, and learnings.
  5. Research Zillow's products, services, and engineering culture.
  6. Practice behavioral questions using the STAR method (Situation, Task, Action, Result).
  7. Understand Zillow's business domain and how technology drives its success.

Study plan

Fig · Study plan — 04 phases

01 / 04
01

Phase 01 of 04

Data Structures and Algorithms

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

Weeks 1-2: Focus on Data Structures and Algorithms. Cover arrays, linked lists, trees, graphs, hash tables, heaps, sorting, searching, dynamic programming, and graph traversal algorithms. Practice coding problems related to these topics on platforms like LeetCode, aiming for at least 2-3 problems per day.

Questions

Commonly asked.

  • Tell me about a time you had to deal with a difficult stakeholder. How did you handle it?
  • Design a system to recommend properties to Zillow users.
  • Given a large dataset of user clickstream data, how would you identify fraudulent activity?
  • Describe a situation where you disagreed with your manager's technical approach. What did you do?
  • How would you design a distributed cache for Zillow's real estate data?
  • What are the trade-offs between monolithic and microservices architectures?
  • How do you ensure the quality and testability of your code?
  • Tell me about a time you failed. What did you learn from it?
  • Design a system to handle real-time notifications for Zillow users (e.g., price drops, new listings).
  • How would you optimize the performance of a database query that is causing slow page loads?

Locations

Regional differences.

Fig · Regions — 02 locations

01 / 02

Location

Seattle

Interview focus

Deep understanding of distributed systems and cloud technologies (AWS, Azure, GCP).Experience with large-scale data processing and analytics.Strong problem-solving and debugging skills in a production environment.Ability to lead technical discussions and mentor team members.Understanding of Zillow's business domain and how technology supports it.

Common questions

  • How would you design a real-time bidding system for Zillow's advertising platform?
  • Discuss a complex technical challenge you faced and how you overcame it.
  • Describe your experience with cloud-native architectures and microservices.
  • How do you ensure the scalability and reliability of a distributed system?
  • Tell me about a time you had to mentor junior engineers.

Tips

  • Research Zillow's tech stack and recent engineering blog posts.
  • Prepare to discuss your contributions to open-source projects or significant technical initiatives.
  • Be ready to articulate your thought process clearly and concisely.
  • Familiarize yourself with common interview patterns for senior roles in tech.
  • Practice explaining complex technical concepts to both technical and non-technical audiences.

Rounds

Round-by-round.

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

DSA

Coding questions at Zillow.

Frequently reported on Zillow loops

View all at Zillow

Other guides

More at Zillow.