Systems Engineering Coding and Problem Solving Questions

Practical coding and algorithmic skills applied to systems and infrastructure tasks. Candidates should demonstrate the ability to write syntactically correct and maintainable code or scripts to automate operations, parse logs, collect metrics, implement health checks, and perform diagnostics; choose appropriate simple data structures and algorithms; reason about time and space complexity at a practical level; apply defensive programming and error handling; debug effectively and write tests to validate behavior; and solve timed technical problems by prioritizing core functionality, correctness, and maintainability. Interviewers commonly use small coding exercises, scripting tasks, or live problems that emphasize operational automation and system oriented problem solving.

HardSystem Design

93 practiced

Design a protocol and implementation plan to perform an atomic multi-file configuration update across N distributed nodes. Requirements: either all nodes should apply the new config or fallback to the previous config, support partial failures, handle leader election, and assume unreliable network. Provide architecture diagram verbally and outline message flows and rollback criteria.

MediumTechnical

62 practiced

Design and implement a Python or Go utility that concurrently polls a list of HTTP endpoints to collect per-endpoint latency and status with a configurable concurrency limit and per-request timeout. The tool must return aggregated metrics (average, p95 latency, success rate) and gracefully handle timeouts and transient errors. Provide runnable pseudocode or a short implementation and explain concurrency model choice.

HardTechnical

68 practiced

Implement a bounded, high-performance multiple-producer multiple-consumer (MPMC) queue in Go or C++ suitable for a logging pipeline where producers should never block for long and memory is bounded. Describe concurrency primitives used, how to handle full-queue backpressure, and provide code sketch or pseudocode for enqueue/dequeue operations.

MediumTechnical

61 practiced

Write a monitoring script that inspects disk usage per filesystem and sends an alert when usage exceeds an adjustable threshold. The script should deduplicate alerts for the same filesystem to avoid alert spamming, support a cooldown period, and be robust to transient spikes. Provide code or pseudocode and describe persistence of alert state across restarts.

MediumTechnical

60 practiced

A deployment intermittently fails because two services race to claim the same resource during startup. Describe a methodical debugging and mitigation plan: how to reproduce, what instrumentation to add, short-term mitigations for production, and longer-term fixes to prevent the race, including protocol or locking changes.

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