Crowdstrike interview questions

Showing 1–8 of 8 results

• Count connected components in a binary gridMedium

  This problem tests your ability to model a 2D grid as a graph and use graph traversal algorithms like DFS or BFS to count distinct connected components.

  CrowdstrikeSoftware EngineerCoding & AlgorithmsOnsite
• Design a Secure, Highly Available Real-Time Event Messaging Platform and Defend ItMedium

  Design a real-time event messaging platform as a take-home assignment where security and availability come first, then defend it in a live review. It tests durable partitioned delivery, authentication and tenant isolation, multi-zone and regional failover, and the ability to weigh reviewer suggestions and adapt to changed requirements.

  CrowdstrikeSoftware EngineerSystem DesignTake-home Project
• Design a file upload and scanning report systemMedium

  This problem tests your ability to design a distributed, asynchronous system that handles high-throughput file uploads, coordinates multi-engine security scanning, and provides reporting capabilities.

  CrowdstrikeSoftware EngineerSystem DesignOnsite
• Design scalable worker pool for template jobsMedium

  This question evaluates a candidate's competency in designing scalable, concurrent backend systems, covering distributed worker pools, producer–consumer patterns, queuing, load balancing, fault tolerance, backpressure, and domain-specific considerations like template parsing and caching.

  CrowdstrikeSoftware EngineerSystem DesignTechnical Screen
• Implement a Risk-Score Priority DetectionStore With Put and GetNext in C++Medium

  Implement a C++ DetectionStore whose Put stores security detections with an id, an unsigned risk score and a payload, and whose GetNext removes and returns the next detection by risk score as a unique_ptr. Tests priority-structure choice, ownership semantics, tie and duplicate-id policies, and thread safety.

  CrowdstrikeBackend EngineerSoftware Engineering FundamentalsTechnical Screen
• Implement an In-Memory Key-Value Cache with Expiry, Then Sketch a Redis-Like ServerMedium

  Implement an in-memory key-value cache in the spirit of Redis, with get, set, delete and per-key expiry, then briefly discuss how a Redis-like server is built and where caches fit in a system. It tests data structure choices, expiry and eviction logic, thread safety, and practical knowledge of caching patterns.

  CrowdstrikeSoftware EngineerSoftware Engineering FundamentalsOnsite
• Maximize the minimum value along a grid pathMedium

  This problem tests your ability to combine binary search on the answer with graph traversal techniques (BFS/DFS/Union-Find) to solve optimization problems on a 2D grid.

  CrowdstrikeSoftware EngineerCoding & AlgorithmsOnsite
• Review a Sample Python Function Aloud and Label Every Finding by SeverityMedium

  Review a short hypothetical Python function that builds a user profile from a database query and a billing-service call, narrating your reasoning aloud. The exercise tests how you read unfamiliar code and whether every comment is clearly labeled as must-fix, could-improve or a personal preference.

  CrowdstrikeSoftware EngineerSoftware Engineering FundamentalsOnsite