CARTO Software Engineer Interview Questions

The questions to prepare for a CARTO Software Engineer interview. Questions from real interview reports rank first. Updated daily.

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CodingStart here. 5 questions · ~48 min

Implement merge sort in Python and explain why it runs in O(n log n) time.

Palindrome String FunctionEasy

Practice

Use two pointers to determine whether a PenFed member-note string reads identically forward and backward.

RecursionMathStrings

CARTO

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System Design3 questions · ~29 min

Design an end-to-end travel recommendation system with retrieval, ranking, feature pipelines, and online feedback loops.

Design Feature Drift Monitoring SystemHard

Design a production ranking system with robust feature drift monitoring across batch and real-time features at high QPS.

Feature StoreFeature DriftModel Serving

CARTO

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Pipelines3 questions · ~29 min

Cleaning Missing Values in PipelinesEasy

Approach for handling missing values in a pipeline with data quality checks and repeatable transformations.

Data WranglingETLQuality

CARTO

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Execution3 questions · ~29 min

Microservices Architecture FactorsHard

Tests judgment about decomposing services and operational trade-offs in a microservices setup at CARTO.

Trade-offsRisk AssessmentScope Management

CARTO

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Behavioral & Leadership6 questions · ~58 min

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