Scale Engineer

Software Engineer

Software EngineerL8Hard

The Software Engineer L8 interview at Whatnot is a comprehensive assessment designed to evaluate a candidate's technical expertise, problem-solving abilities, system design skills, and cultural fit. This role requires a strong foundation in computer science principles, experience with large-scale systems, and the ability to mentor junior engineers.

Rounds·4

Timeline·~14d

Experience·7 - 10 yrs

Comp band·US$180000 - US$250000

Interview time·180 min

Evaluation

What they measure.

  • Technical proficiency in core computer science concepts.
  • Ability to design scalable, reliable, and maintainable systems.
  • Strong problem-solving and analytical skills.
  • Effective communication and collaboration abilities.
  • Leadership potential and mentorship capabilities.
  • Alignment with Whatnot's values and culture.

Preparation

How to prepare.

Tips

  1. Review fundamental computer science concepts (data structures, algorithms, operating systems, databases).
  2. Practice system design problems, focusing on scalability, reliability, and trade-offs.
  3. Prepare to discuss your past projects in detail, highlighting your contributions and challenges.
  4. Brush up on behavioral interview questions using the STAR method (Situation, Task, Action, Result).
  5. Research Whatnot's mission, values, products, and recent news.
  6. Understand common distributed systems patterns and challenges.
  7. Practice coding problems on platforms like LeetCode, focusing on medium to hard difficulty.
  8. Prepare questions to ask the interviewers about the role, team, and company culture.

Study plan

Fig · Study plan — 04 phases

01 / 04
01

Phase 01 of 04

Data Structures & Algorithms

Weeks 1-2: DSA fundamentals. Practice Easy/Medium LeetCode.

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 problems on LeetCode (Easy/Medium).

Questions

Commonly asked.

  • Describe a complex system you designed or significantly contributed to. What were the key challenges and how did you address them?
  • How would you design a system to handle real-time updates for millions of users?
  • Tell me about a time you had to make a difficult technical trade-off. What was your reasoning?
  • How do you approach mentoring junior engineers and fostering technical growth within a team?
  • What are the trade-offs between monolithic and microservices architectures?
  • Describe a situation where you had to deal with a production incident. What was your role and what did you learn?
  • How would you design a distributed caching system?
  • Tell me about a time you disagreed with a team member or manager on a technical decision. How did you resolve it?
  • What are your strategies for ensuring the scalability and reliability of a large-scale application?
  • How do you approach code reviews to ensure quality and maintainability?

Locations

Regional differences.

Fig · Regions — 03 locations

01 / 03

Location

San Francisco

Interview focus

Deep dive into distributed systems design and implementation.Emphasis on scalability, reliability, and performance optimization.Behavioral questions focused on leadership, mentorship, and cross-functional collaboration.Problem-solving scenarios involving complex algorithmic challenges.

Common questions

  • Discuss a challenging technical problem you solved at scale.
  • How do you approach designing a real-time notification system?
  • Describe a time you had to influence a team to adopt a new technology.
  • What are your strategies for debugging complex distributed systems?
  • How do you ensure code quality and maintainability in a large codebase?

Tips

  • Be prepared to discuss your contributions to significant projects in detail.
  • Highlight experience with cloud platforms (AWS, GCP, Azure) and containerization (Docker, Kubernetes).
  • Showcase your ability to lead technical discussions and mentor other engineers.
  • Practice explaining complex technical concepts clearly and concisely.
  • Research Whatnot's tech stack and recent product developments.

Rounds

Round-by-round.

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

DSA

Coding questions at Whatnot.

Frequently reported on Whatnot loops

View all at Whatnot

Other guides

More at Whatnot.