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HERE Technologies Research Engineer Interview Questions

The questions to prepare for a HERE Technologies Research Engineer interview. Questions from real interview reports rank first. Updated weekly.

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1
CodingStart here. 7 questions · ~64 min
Linked List ReversalEasy
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Reverse a singly linked list in-place using iterative pointer manipulation.

RecursionLinked ListsArraysHERE Technologies
Solve a Knapsack DP ProblemHard

Tests ability to design and implement dynamic programming solutions.

RecursionMathDynamic ProgrammingHERE Technologies
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2
System Design4 questions · ~37 min
Improve Mapping AccuracyHard

Tests end-to-end thinking for improving map quality using data, models, and evaluation.

Feature StoreFeature DriftModel ServingHERE Technologies
Scalable Geolocation Service DesignHard

Tests system design for scalability, reliability, and performance in geolocation services.

InfrastructureCold StartModel ServingHERE Technologies
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3
Behavioral & Leadership4 questions · ~37 min
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4
More topics5 questions · ~46 min
Supervised vs Unsupervised LearningEasy

Explain how supervised and unsupervised learning differ, and ground the distinction in a practical ML example.

Unsupervised LearningFeature EngineeringBias-Variance TradeoffHERE Technologies
Optimize Multi-Terabyte ETL PipelineMedium

Explain how you improved a slow ETL pipeline on multi-terabyte data, including bottleneck analysis, tuning choices, and validation.

ETL optimizationdata processingperformanceHERE Technologies
Design an Experiment for a FeatureMedium

Tests experimental design, metrics, and statistical reasoning for feature validation.

ExperimentationHypothesis TestingA/B TestingHERE Technologies
Real-Time Traffic Data PipelineHard

Tests architecture skills for streaming pipelines and near-real-time analytics.

InfrastructureStream ProcessingOrchestrationHERE Technologies
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