Scale Engineer

Software Engineer

Software EngineerL7Hard

This interview process is designed to assess candidates for a Software Engineer (L7) position at Twitch. It evaluates technical expertise, problem-solving abilities, system design skills, leadership potential, and cultural fit within the company.

Rounds·4

Timeline·~14d

Experience·7 - 10 yrs

Comp band·US$180000 - US$250000

Interview time·210 min

Evaluation

What they measure.

  • Problem-solving approach and analytical skills.
  • Depth of technical knowledge in relevant areas (e.g., distributed systems, algorithms, data structures).
  • System design capabilities, including scalability, reliability, and maintainability.
  • Communication skills and ability to articulate complex ideas.
  • Leadership potential and ability to mentor others.
  • Cultural fit and alignment with Twitch's values.

Preparation

How to prepare.

Tips

  1. Review fundamental computer science concepts, including data structures, algorithms, and operating systems.
  2. Practice coding problems on platforms like LeetCode, HackerRank, focusing on medium to hard difficulty.
  3. Study system design principles for scalable and reliable applications.
  4. Prepare to discuss your past projects in detail, highlighting your contributions and impact.
  5. Research Twitch's products, services, and recent technical challenges.
  6. Understand common behavioral interview questions and prepare STAR method responses.
  7. Familiarize yourself with distributed systems concepts, such as consensus, caching, and message queues.

Study plan

Fig · Study plan — 05 phases

01 / 05
01

Phase 01 of 05

Data Structures & Algorithms

Weeks 1-2: Data Structures & Algorithms (DSA) fundamentals. Practice coding problems.

Weeks 1-2: Focus on core data structures (arrays, linked lists, trees, graphs, hash maps) and algorithms (sorting, searching, dynamic programming, graph traversal). Practice implementing these from scratch and analyze their time and space complexity. Cover fundamental operating system concepts like processes, threads, memory management, and concurrency.

Questions

Commonly asked.

  • Design a URL shortener service.
  • How would you design a system to handle real-time analytics for millions of concurrent users?
  • Describe a time you had to deal with a production issue. What was your process for debugging and resolution?
  • 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 challenging project you led. What were the key challenges and how did you overcome them?
  • Explain the concept of eventual consistency.
  • How would you design a rate limiter for an API?
  • Describe your experience with cloud platforms like AWS, Azure, or GCP.
  • What are your thoughts on continuous integration and continuous deployment (CI/CD)?

Locations

Regional differences.

Fig · Regions — 02 locations

01 / 02

Location

San Francisco

Interview focus

Deep dive into distributed systems and high-throughput architectures.Emphasis on leadership and mentorship capabilities.Understanding of large-scale data processing and real-time analytics.Cultural alignment with Twitch's values of community and innovation.

Common questions

  • How would you design a real-time notification system for Twitch?
  • Discuss a time you had to mentor junior engineers. What was your approach?
  • Describe a complex technical challenge you faced and how you overcame it, focusing on scalability.
  • How do you handle disagreements within a team regarding technical direction?
  • What are your thoughts on the current state of live streaming technology and potential future innovations?

Tips

  • Be prepared to discuss your experience with AWS or other cloud platforms in detail.
  • Showcase your ability to lead technical discussions and influence team decisions.
  • Highlight projects where you significantly improved system performance or scalability.
  • Research Twitch's recent technical blog posts and product launches.

Rounds

Round-by-round.

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

DSA

Coding questions at Twitch.

Frequently reported on Twitch loops

View all at Twitch

Other guides

More at Twitch.