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Updated weekly · Last refresh Sep 13

Top 50 anomaly detection Interview Questions

The most frequently asked anomaly detection questions across all roles and companies, ranked by real interview frequency. Updated daily.

50questions
~13htotal time
42companies covered
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1
CodingStart here. 20 questions · ~304 min
Real-Time Anomaly Detection FunctionHard
Practice

Detect per-sensor outliers in DriveWell readings using rolling medians, heaps, and bounded memory.

sensor dataanomaly detectionCambridge Mobile TelematicsMeta Platforms
Metrics Anomaly DetectionHard
Practice

Detect robust outliers in Zoox telemetry using a rolling median and MAD with logarithmic updates.

data processinganomaly detectionZooxNVIDIA
Sliding-Window Log Anomaly DetectionMedium
Practice
Recently asked

Identify anomalous Datadog log values by comparing each event with a rolling mean and standard deviation.

Sliding Windowanomaly detectionDatadog
Rolling Latency Percentiles and AlertsHard
Practice
Recently asked

Compute rolling p50 and p95 latency with a sorted sliding window and flag sudden generation spikes.

latencyanomaly detectionAnthropic
Detect Anomalies in Network Log StreamsHard
Practice
Recently asked

Detect unusually large per-source network events using rolling statistics and hash-mapped sliding windows.

function implementationpythonanomaly detectionZscaler
Detect Timestamp Anomalies and GapsEasy
Practice
Recently asked

Scan Airbnb event timestamps once to identify out-of-order records and gaps larger than a threshold.

loopspythonanomaly detectionAirbnb
Real-Time Anomaly DetectionHard
Practice

Detect real-time sensor anomalies by comparing each value with the mean and standard deviation of its preceding sliding window.

Stream ProcessingArraysSliding WindowWoven By Toyota
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2
SQL & Data Manipulation3 questions · ~46 min
Rolling Averages and Anomaly FlagsMedium
Practice
Recently asked

Use PostgreSQL window functions to calculate rolling throughput averages and flag anomalous Amazon Services facility hours.

sql queryanomaly detectionAmazon Services
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3
System Design25 questions · ~381 min
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4
More topics2 questions · ~30 min
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