Scale Engineer

Software Engineer

Software EngineerSenior Engineer IIHard

CrowdStrike's Senior Engineer II interview process is designed to assess a candidate's technical expertise, problem-solving abilities, system design skills, and cultural fit. The process is rigorous and aims to identify individuals who can contribute significantly to our innovative security solutions.

Rounds·5

Timeline·~14d

Experience·5 - 10 yrs

Comp band·US$150000 - US$200000

Interview time·270 min

Evaluation

What they measure.

  • Technical proficiency in relevant programming languages and frameworks.
  • Problem-solving skills and analytical thinking.
  • Ability to design scalable, reliable, and secure systems.
  • Understanding of software development best practices and methodologies.
  • Communication and collaboration skills.
  • Cultural fit and alignment with CrowdStrike's values.

Preparation

How to prepare.

Tips

  1. Review core computer science concepts: data structures, algorithms, operating systems, and networking.
  2. Practice coding problems on platforms like LeetCode, HackerRank, focusing on medium to hard difficulty.
  3. Study system design principles and common patterns for distributed systems.
  4. Understand security fundamentals and common vulnerabilities.
  5. Prepare to discuss your past projects in detail, focusing on your contributions and technical decisions.
  6. Research CrowdStrike's products, mission, and recent news.
  7. Practice behavioral questions using the STAR method (Situation, Task, Action, Result).

Study plan

Fig · Study plan — 04 phases

01 / 04
01

Phase 01 of 04

Data Structures and Algorithms

Weeks 1-2: Data Structures & Algorithms (Arrays, Lists, Trees, Graphs, Hash Tables, Sorting, Searching, DP, Greedy). Practice 5-7 problems/week.

Weeks 1-2: Focus on Data Structures and Algorithms. Cover arrays, linked lists, trees, graphs, hash tables, sorting, searching, dynamic programming, and greedy algorithms. Practice implementing these and analyzing their time and space complexity. Aim for 5-7 problems per week.

Questions

Commonly asked.

  • Describe a time you had to debug a complex production issue. What was your process?
  • Design a URL shortening service like bit.ly.
  • How would you design a system to detect and prevent DDoS attacks?
  • Tell me about a time you disagreed with a technical decision. How did you handle it?
  • Implement a function to find the k-th largest element in an unsorted array.
  • What are the trade-offs between monolithic and microservices architectures?
  • How do you ensure the security of the code you write?
  • Design a real-time notification system.
  • Describe a situation where you had to mentor a junior engineer.
  • What are the key principles of RESTful API design?
  • How would you optimize the performance of a slow database query?
  • Tell me about a project you are particularly proud of and why.

Locations

Regional differences.

Fig · Regions — 03 locations

01 / 03

Location

North America

Interview focus

Deep understanding of distributed systems and cloud-native architectures.Experience with security best practices in software development.Ability to mentor junior engineers and lead technical discussions.Strong problem-solving skills applied to complex, real-world scenarios.

Common questions

  • How would you design a distributed rate limiter for a global API?
  • Describe a challenging technical problem you solved recently and your approach.
  • How do you ensure the scalability and reliability of a large-scale system?
  • What are your thoughts on microservices vs. monolithic architectures in the context of a security product?
  • Discuss your experience with cloud platforms (AWS, Azure, GCP) and their relevant services for building secure applications.

Tips

  • Be prepared to discuss specific examples of large-scale systems you've designed or contributed to.
  • Highlight your experience with security-conscious development and threat modeling.
  • Showcase your leadership potential and ability to influence technical direction.
  • Familiarize yourself with CrowdStrike's product suite and the security landscape.

Rounds

Round-by-round.

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

DSA

Coding questions at CrowdStrike.

Frequently reported on CrowdStrike loops

View all at CrowdStrike

Other guides

More at CrowdStrike.