CrowdStrike Software Engineer Interview Questions + Guide in 2025

CrowdStrike is a global leader in cybersecurity, known for its cloud-native platform that defends against advanced cyber threats. As a Software Engineer here, you’ll build scalable, resilient systems using technologies like Golang, Python, Kubernetes, and AWS.

You’ll contribute to mission-critical products that secure cloud environments and stop breaches. The interview process includes technical screens, design challenges, coding tasks, and behavioral rounds.

Use this guide to prepare for the CrowdStrike Software Engineer interview and tackle common questions with confidence.

The interview process at CrowdStrike varies slightly by role and seniority, but typically follows a multi-stage format combining behavioral and technical assessments.

2.1 Recruiter/Hiring Manager Call Screening

If shortlisted, a recruiter will contact you to verify your experience and skills. This call may include light behavioral or technical questions and lasts about 30 minutes. In some cases, a hiring manager may join to answer role-specific questions.

One candidate recalled, “Started with a recruiter call after being reached out to on LinkedIn, then moved to a hiring manager interview. If I had made it further, the tech screen was next.”

2.2 Initial Technical Screening

Next is a technical screen focused on coding skills. You’ll typically be asked 2–3 Leetcode-style questions per round, covering data structures, algorithms, and problem-solving fundamentals.

As one applicant described, “Regular Leetcode questions, 2–3 questions per round.”

2.3 Take-Home Assignment

After passing the initial technical round, you may receive a take-home project. This task often involves coding and/or system design, and is meant to assess your problem-solving in a real-world context. Expect it to take several hours.

According to one candidate, “The take-home assignment was moderately difficult and involved a systems programming challenge.”

2.4 Review and Feedback Round

Your assignment will be discussed in detail during one or more follow-up interviews. Expect questions about your design decisions, code efficiency, and potential improvements. Topics like cloud infrastructure and distributed systems may also be covered.

One interviewee noted, “The final round interviews consisted of a mix of questions regarding my assignment (how would you do ‘X’ better, etc.) and standard miscellaneous technical questions.”

2.5 Onsite Interview Rounds

The final stage usually includes onsite or virtual technical interviews. You’ll encounter system design, performance optimization, and domain-specific questions. Topics may include Golang, systems programming, or platform scalability depending on the role.

One candidate explained, “The interview process that was told to me was 1) hiring manager call 2) coding interview 3) technical discussion 4) take-home architecture 5) 90 min design discussion based on how to scale a system.”

CrowdStrike software engineer interviews cover a mix of coding challenges, system design, and applied problem-solving across data structures, algorithms, and practical engineering scenarios.

3.1 Create a function combinational_dice_rolls to dump all possible combinations of dice rolls.

Write a recursive function to generate all combinations of n dice with m faces.

3.2 Develop a function is_subsequence to find out if one string is a subsequence of another.

Determine if string1 appears in order (but not necessarily contiguously) within string2.

3.3 Write a function to return a list of all prime numbers up to a given integer N.

Return all prime numbers ≤ N using an efficient algorithm such as the Sieve of Eratosthenes.

3.4 Create a function to add the frequency of each character in a string after each character.

Return a modified string where each character is followed by its total count, excluding spaces and items in a discard_list.

3.5 Write a function sorting to sort a list of strings in ascending alphabetical order from scratch.

Implement a sorting algorithm like merge sort with O(n log n) complexity.

3.6 How would you evaluate whether using a decision tree algorithm is the correct model for predicting loan repayment?

Discuss criteria for selecting decision trees (interpretability, performance on nonlinear patterns) and how you’d evaluate results pre- and post-deployment.

3.7 What are the key differences between classification models and regression models?

Classification predicts categories; regression predicts continuous values. Explain how each is used in practice.

3.8 When would you use a bagging algorithm versus a boosting algorithm?

Compare the approaches. Bagging reduces variance; boosting reduces bias. Outline which is best for different types of model errors.

3.9 How would you determine if you have enough data to create an accurate ETA prediction model?

Assess data sufficiency via distribution coverage, feature completeness, and model performance on test sets.

3.10 How would you build a model to predict which merchants DoorDash should acquire in a new market?

Outline feature selection, model type, and evaluation criteria for acquisition targeting.

3.11 How would you explain what a p-value is to someone who is not technical?

Describe it as the probability of seeing your results—or more extreme ones—by random chance if there’s no actual effect.

3.12 What is the probability that a red marble was pulled from Bucket #1?

Solve a Bayesian probability problem involving conditional probabilities.

3.13 What is the probability that Amy wins the game by rolling a “6” first?

Use geometric series or recursive probabilities to calculate the first-success probability.

3.14 What factors could have biased Jetco’s fastest average boarding times result?

Identify study design flaws like sampling bias, uncontrolled variables, or missing contextual data.

3.15 How would you ensure data quality across different ETL platforms for PayPal’s Southern African division?

Discuss cross-platform data validation, schema consistency, and localization challenges like language translation and encoding.

3.16 How would you debug the marriage attribute marked ‘TRUE’ for all auto insurance clients?

Investigate source systems, ETL logic, and value transformations to identify root causes of the uniform TRUE flag.

4.1 What is the average salary for a Software Engineer at CrowdStrike?

4.2 What is the company culture like at CrowdStrike?

CrowdStrike promotes a remote-first, globally distributed environment focused on autonomy, innovation, and collaboration. Engineers are expected to take ownership and build high-impact security solutions.

4.3 How hard is the CrowdStrike Software Engineer interview?

The interview is moderately to highly technical, with rounds covering coding, system design, and distributed systems. Expect questions on Golang, cloud architecture, and optimization.

4.4 What languages and tools should I know for the interview?

Experience with Golang, C++, or Rust is valuable. Familiarity with Python, AWS, Kubernetes, and distributed systems will help you stand out.

4.5 How do I prepare for CrowdStrike’s take-home assignment?

Write clean, scalable code and make thoughtful architectural decisions. Be ready to discuss your design tradeoffs and performance considerations during the review round.

4.6 What behavioral traits does CrowdStrike value in engineers?

CrowdStrike values initiative, ownership, and clear communication—especially in a remote setting. Expect to show how you adapt, collaborate asynchronously, and take accountability.

4.7 What does CrowdStrike look for in system design interviews?

You’ll be expected to design scalable, fault-tolerant systems—often within a cloud-native security context. Emphasize tradeoffs, data flow, and real-time architecture.

4.8 How long does the CrowdStrike interview process take?

The process typically spans 2 to 4 weeks, though timing can vary depending on team availability and take-home review cycles.

4.9 Can I apply to CrowdStrike as a remote candidate?

Yes, most engineering roles at CrowdStrike are fully remote, with virtual collaboration and occasional team meetups.

4.10 Where can I find practice questions for the CrowdStrike interview?

Check out Interview Query for real interview questions and mock interview prep tailored to CrowdStrike.

CrowdStrike’s interview process is designed to identify engineers who can build secure, scalable systems in a fast-moving, cloud-native environment. With a focus on technical depth, thoughtful design, and strong communication, the process rewards candidates who prepare strategically.

For more detailed insights, check out our CrowdStrike Interview Guide, which includes common questions and tips across roles, including software engineering.

At Interview Query, we’re here to help you prepare with confidence. Explore our resources, practice intentionally, and approach your interview ready to stand out.

Good luck!