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Updated weekly · Last refresh Aug 30

Motorola Solutions Research Scientist Interview Questions

The questions to prepare for a Motorola Solutions Research Scientist interview. Questions from real interview reports rank first. Updated weekly.

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1
CodingStart here. 11 questions · ~97 min
Non-Maximum Suppression for BoxesMedium
Practice

Implement greedy Non-Maximum Suppression by sorting boxes by score and removing boxes with high IoU overlap.

ArraysSortingGreedyMotorola Solutions
Process Multi-Rate Sensor DataHard

Tests your coding skill for aligning streams and handling sampling-rate mismatches correctly.

ArraysSortingTwo PointersMotorola Solutions
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2
Machine Learning24 questions · ~211 min
L1 vs L2 RegularizationMedium

Explain how L1 and L2 regularization differ geometrically and probabilistically, grounded in a practical supervised learning example.

Feature EngineeringRegularizationSupervised LearningMotorola Solutions
Classical DSP vs Deep LearningMedium

Tests your ability to select the right modeling paradigm for signal characteristics and constraints.

Feature EngineeringRegularizationDeep LearningMotorola Solutions
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3
Model Evaluation7 questions · ~62 min
Evaluate with Precision Recall F1 ROC-AUCEasy

Tests your competence in interpreting and comparing classification metrics for deployment decisions.

PrecisionAUC-ROCRecallMotorola Solutions
Why Accuracy Fails for Rare Hardware FailuresEasy

Tests your understanding of class imbalance and why metric choice can mislead model assessment.

PrecisionAccuracyRecallMotorola Solutions
Robust Evaluation Plan for Mission-CriticalMedium

Tests your ability to build evaluation that reflects safety, reliability, and deployment conditions.

PrecisionThreshold TuningRecallMotorola Solutions
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4
More topics2 questions · ~18 min
Improve Voice Recognition in NoiseHard

Tests your approach to robust speech modeling under adverse conditions relevant to public safety.

Language ModelsText ClassificationTokenizationMotorola Solutions
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