Scale Engineer

Software Engineer

Software EngineerL3Medium

The Software Engineer L3 interview at Zoox is designed to assess a candidate's foundational knowledge in computer science, problem-solving abilities, and coding proficiency. The process typically involves multiple rounds, including technical interviews focusing on data structures and algorithms, a system design interview, and a behavioral interview to evaluate cultural fit and collaboration skills. The goal is to identify engineers who can contribute effectively to Zoox's innovative projects.

Rounds·3

Timeline·~7d

Experience·1 - 3 yrs

Comp band·US$100000 - US$130000

Interview time·135 min

Evaluation

What they measure.

  • Problem-solving approach
  • Code quality and correctness
  • Understanding of data structures and algorithms
  • System design principles
  • Communication skills
  • Behavioral fit and teamwork

Preparation

How to prepare.

Tips

  1. Review fundamental data structures (arrays, linked lists, trees, graphs, hash maps) and algorithms (sorting, searching, graph traversal, dynamic programming).
  2. Practice coding problems on platforms like LeetCode, HackerRank, or Coderbyte, focusing on medium-difficulty problems.
  3. Understand core computer science concepts such as operating systems, databases, and networking.
  4. Prepare for system design questions by studying common design patterns and scalability concepts.
  5. Reflect on past projects and experiences to answer behavioral questions using the STAR method (Situation, Task, Action, Result).
  6. Research Zoox's products, mission, and values to tailor your answers and demonstrate genuine interest.

Study plan

Fig · Study plan — 03 phases

01 / 03
01

Phase 01 of 03

Data Structures and Algorithms

Weeks 1-2: Data Structures & Algorithms. Practice 2-3 problems daily.

Weeks 1-2: Focus on Data Structures and Algorithms. Cover arrays, linked lists, stacks, queues, trees (binary trees, BSTs, heaps), hash tables, and graphs. Practice algorithms like sorting (quicksort, mergesort), searching (binary search), graph traversals (BFS, DFS), and basic dynamic programming. Aim to solve 2-3 problems per day.

Questions

Commonly asked.

  • Given an array of integers, find the contiguous subarray with the largest sum.
  • Implement a function to reverse a linked list.
  • Design a system to handle real-time notifications.
  • Tell me about a time you disagreed with a teammate. How did you handle it?
  • How would you optimize a slow database query?

Locations

Regional differences.

Fig · Regions — 01 locations

01 / 01

Location

All Locations

Interview focus

Problem-solving skillsCoding efficiencyUnderstanding of core CS concepts

Common questions

  • Explain the difference between a process and a thread.
  • Describe a situation where you had to debug a complex issue. What was your approach?
  • How would you design a URL shortener service?

Tips

  • Be prepared to explain your thought process clearly.
  • Practice coding on a whiteboard or a simple text editor.
  • Research Zoox's mission and values.

Rounds

Round-by-round.

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

DSA

Coding questions at Zoox.

Frequently reported on Zoox loops

View all at Zoox

Other guides

More at Zoox.