CrowdStrike

Software Engineer

Software EngineerEngineer IIMedium to Hard

The interview process for a Software Engineer at CrowdStrike, Engineer II level, is designed to assess technical proficiency, problem-solving skills, and cultural fit. It typically involves multiple rounds, including technical assessments, behavioral interviews, and a system design discussion.

Rounds

4

Timeline

~14 days

Experience

2 - 5 yrs

Salary Range

US$110000 - US$140000

Total Duration

180 min

Overall Evaluation Criteria

Technical Skills

Problem-solving abilities
Algorithmic thinking
Data structure knowledge
Code quality and efficiency
System design principles
Communication skills
Teamwork and collaboration
Cultural fit with CrowdStrike's values

Communication

Ability to articulate thought process
Clarity of explanations
Active listening
Constructive feedback delivery

Behavioral and Cultural Fit

Adaptability to new challenges
Learning agility
Proactiveness
Ownership and accountability

Preparation Tips

1Review fundamental data structures and algorithms.
2Practice coding problems on platforms like LeetCode, HackerRank, or Coderbyte.
3Understand core computer science concepts (operating systems, databases, networking).
4Prepare for system design questions by studying common architectural patterns.
5Reflect on past projects and prepare to discuss your contributions and challenges.
6Research CrowdStrike's products, mission, and values.
7Prepare questions to ask the interviewer about the role, team, and company culture.

Study Plan

1

Data Structures and Algorithms

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

Weeks 1-2: Focus on Data Structures (Arrays, Linked Lists, Stacks, Queues, Trees, Graphs, Hash Tables) and Algorithms (Sorting, Searching, Dynamic Programming, Greedy Algorithms). Practice coding problems related to these topics daily. Aim for at least 2-3 problems per day.

2

System Design

Weeks 3-4: System Design. Study scalability, databases, caching, etc.

Weeks 3-4: Deep dive into System Design. Study concepts like scalability, availability, reliability, databases (SQL vs NoSQL), caching, load balancing, and microservices. Work through common system design case studies.

3

Behavioral and Core CS Concepts

Week 5: Behavioral questions (STAR method) & Core CS Concepts.

Week 5: Prepare for behavioral questions. Use the STAR method (Situation, Task, Action, Result) to structure your answers. Think about examples from your past experience that demonstrate leadership, teamwork, problem-solving, and adaptability. Also, review core CS concepts like OS, networking, and databases.

4

Mock Interviews and Final Prep

Week 6: Mock Interviews & Final Preparation.

Week 6: Mock interviews. Practice with peers or use online platforms to simulate the interview environment. Get feedback on your technical explanations and behavioral responses. Finalize your questions for the interviewers.

Commonly Asked Questions

Write a function to reverse a linked list.
Given an array of integers, find the contiguous subarray with the largest sum.
Design a URL shortening service like bit.ly.
How would you design a system to handle real-time notifications?
Tell me about a time you failed and what you learned from it.
Describe a complex technical problem you solved and your approach.
What are your strengths and weaknesses?
Why are you interested in CrowdStrike?

Location-Based Differences

India

Interview Focus

Adaptability to local work culture.Understanding of regional market trends.Communication style and clarity.

Common Questions

Tell me about a challenging project you worked on.

How do you handle disagreements within a team?

Describe a time you had to learn a new technology quickly.

Tips

Research common communication styles in this region.
Be prepared to discuss projects relevant to local industry needs.
Understand the company's presence and impact in this specific location.

USA

Interview Focus

Collaboration in a distributed team environment.Autonomy and self-management skills.Familiarity with US-based tech industry standards.

Common Questions

What are your thoughts on remote work policies?

How do you stay motivated when working independently?

Describe your experience with agile methodologies.

Tips

Highlight your experience with remote collaboration tools.
Emphasize your ability to work with minimal supervision.
Be ready to discuss your understanding of US work culture and expectations.

Process Timeline

1
Data Structures and Algorithms45m
2
System Design60m
3
Behavioral and Cultural Fit45m
4
Hiring Manager Discussion30m

Interview Rounds

4-step process with detailed breakdown for each round

1

Data Structures and Algorithms

Coding problems focusing on data structures and algorithms.

Technical Phone Screen / Coding InterviewMedium
45 minSoftware Engineer / Senior Software Engineer

This round focuses on your core programming skills. You will be asked to solve one or two coding problems, typically involving data structures and algorithms. The interviewer will assess your ability to write clean, efficient, and correct code, as well as your approach to problem-solving and your ability to communicate your thought process.

What Interviewers Look For

Strong grasp of data structures and algorithms.Ability to translate a problem into code.Logical thinking and systematic approach.Clear communication of thought process.

Evaluation Criteria

Correctness of the solution
Efficiency of the algorithm (time and space complexity)
Code readability and maintainability
Problem-solving approach
Ability to explain the solution clearly

Questions Asked

Given a binary tree, find its inorder traversal.

Data StructuresTreesRecursion

Implement a function to find the kth smallest element in an unsorted array.

AlgorithmsSortingQuickSelect

Preparation Tips

1Practice coding problems on platforms like LeetCode, focusing on medium-difficulty questions.
2Understand the time and space complexity of your solutions.
3Be prepared to explain your approach before you start coding.
4Write clean, well-commented code.
5Test your code with edge cases.

Common Reasons for Rejection

Inability to solve coding problems efficiently.
Poor understanding of fundamental data structures and algorithms.
Lack of clarity in explaining the thought process.
Suboptimal code quality or efficiency.
2

System Design

Design scalable and reliable software systems.

System Design InterviewHard
60 minSenior Software Engineer / Engineering Manager

This round assesses your ability to design and architect software systems. You'll be given an open-ended problem (e.g., design Twitter's feed, design a URL shortener) and expected to propose a scalable, reliable, and maintainable solution. This involves discussing requirements, high-level design, data modeling, API design, and identifying potential bottlenecks and trade-offs.

What Interviewers Look For

Ability to design complex systems from scratch.Understanding of distributed systems.Pragmatic approach to problem-solving.Ability to justify design choices.

Evaluation Criteria

System design principles (scalability, availability, reliability)
Understanding of trade-offs
Ability to handle large-scale systems
Knowledge of databases, caching, and messaging queues
Clarity and structure of the design

Questions Asked

Design a distributed cache system.

System DesignDistributed SystemsCaching

How would you design a rate limiter for an API?

System DesignAPIsConcurrency

Preparation Tips

1Study common system design patterns and concepts.
2Practice designing various systems, focusing on scalability and availability.
3Understand different database types (SQL, NoSQL) and their use cases.
4Learn about caching strategies, load balancing, and message queues.
5Be prepared to discuss trade-offs in your design decisions.

Common Reasons for Rejection

Inability to design scalable and reliable systems.
Lack of understanding of distributed systems concepts.
Poor trade-off analysis.
Inability to handle ambiguity in requirements.
3

Behavioral and Cultural Fit

Assesses teamwork, problem-solving, and cultural fit.

Behavioral InterviewMedium
45 minEngineering Manager / Senior Team Member

This round focuses on your behavioral and soft skills. You'll be asked questions about your past experiences, how you handle specific situations (e.g., conflict resolution, dealing with failure, working under pressure), and your motivations. The goal is to understand how you work within a team and if you align with CrowdStrike's culture.

What Interviewers Look For

Evidence of collaboration and teamwork.Ability to handle conflict and challenges constructively.Proactiveness and ownership.Alignment with CrowdStrike's mission and values.

Evaluation Criteria

Teamwork and collaboration skills
Problem-solving approach in past projects
Adaptability and learning agility
Cultural fit with CrowdStrike
Motivation and career goals

Questions Asked

Tell me about a time you had to work with a difficult colleague.

BehavioralTeamworkConflict Resolution

Describe a situation where you had to take initiative.

BehavioralLeadershipProactiveness

Preparation Tips

1Prepare examples using the STAR method for common behavioral questions.
2Reflect on your strengths, weaknesses, and career aspirations.
3Research CrowdStrike's values and culture.
4Be honest and authentic in your responses.
5Show enthusiasm for the role and the company.

Common Reasons for Rejection

Poor communication skills.
Lack of alignment with company values.
Inability to provide specific examples for behavioral questions.
Negative attitude or lack of enthusiasm.
4

Hiring Manager Discussion

Final discussion with the hiring manager about fit and expectations.

Managerial InterviewMedium
30 minHiring Manager

This is typically the final round with the hiring manager. It's a chance for both sides to ensure a good fit. The manager will discuss the team's projects, expectations for the role, and your career goals. You should also use this opportunity to ask any remaining questions you have about the team, the role, or the company.

What Interviewers Look For

Enthusiasm for the role and team.Clear understanding of expectations.Good rapport with the potential manager.Alignment on career growth.

Evaluation Criteria

Alignment with team goals and vision
Understanding of the role's responsibilities
Career aspirations and growth potential
Mutual fit between candidate and team/manager

Questions Asked

What are your long-term career goals?

BehavioralCareer Goals

What interests you most about this specific team?

BehavioralMotivation

Preparation Tips

1Prepare thoughtful questions about the team's projects, challenges, and culture.
2Reiterate your interest in the role and how your skills align.
3Discuss your career goals and how this role fits into them.
4Be ready to discuss salary expectations if prompted.

Common Reasons for Rejection

Lack of alignment on technical direction.
Unrealistic salary expectations.
Poor fit with the team's dynamics.
Concerns about long-term commitment.

Commonly Asked DSA Questions

Frequently asked coding questions at CrowdStrike

View all
Trapping Rain WaterHARDSpiral MatrixMEDIUMMerge IntervalsMEDIUMBest Time to Buy and Sell StockEASYNumber of IslandsMEDIUMCourse ScheduleMEDIUMMove ZeroesEASYString CompressionMEDIUMSquares of a Sorted ArrayEASYTime Based Key-Value StoreMEDIUM