Assessment
Backend Advanced C++: Production Multithreading Debugging45 minutes
Intermediate
Available in+4
Skills you'll verify
Technical Problem-Solving
C++
About This Simulation
Your mission in this simulation
Your Role
C++ Developer
Your Goal
Debug C++ multithreading outage, fix code, and explain solution simply.
Simulation Details:
CoreStream Technologies is a leading software development company focused on building enterprise-grade solutions for Fortune 500 clients. Their flagship product is a high-performance, multithreaded C++ service that handles millions of transactions daily with near-perfect uptime. The company relies on advanced development tools and rigorous testing to maintain reliability, especially in industries like finance, healthcare, and logistics where uninterrupted service is critical. Collaboration is central to their culture, with structured code reviews, pair programming, and cross-functional meetings ensuring rapid incident response and robust solutions. CoreStream is known for its proactive approach to problem-solving and clear communication between technical and non-technical teams.
You play as a C++ Developer at CoreStream Technologies, tasked with resolving a critical production issue in the company’s flagship service. After a recent update, the service is experiencing sporadic failures due to a concurrency defect in the multithreaded C++ module. You must collaborate one-on-one with the Software Team Lead, Alex Carter, via chat to investigate runtime symptoms, review annotated logs, and pinpoint the source of the problem. Using the single code editor, you will update the shared C++ source file to introduce thread-safe corrections and document your reasoning. Once the technical fix is complete, you will brief Product Manager Giulia Romano in a voice call, delivering a clear, jargon-free explanation of the issue, its impact on client operations, and the solution you implemented.
- Collaborate with Alex Carter in chat to analyze the problem and discuss your debugging approach.
- Edit the shared C++ source file to implement a robust, thread-safe solution, including clear comments.
- Brief Giulia Romano in a voice call, explaining the issue and solution in plain, business-focused language.
- Demonstrate strong technical problem-solving and practical C++ concurrency skills.
- Show effective communication by translating technical details into clear updates for stakeholders.
Helpful for
Junior C++ Developer, Software Engineer, Technical Product Manager
How it worksNot sure how it works? Watch the video below.
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