Tessian Data Engineer Interview Questions

The questions to prepare for a Tessian Data Engineer interview. Questions from real interview reports rank first. Updated weekly.

30questions

~4htotal time

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CodingStart here. 4 questions · ~35 min

Sort intervals by start time, then merge overlapping ranges into a minimal non-overlapping list.

Detect Email Metadata AnomaliesMedium

Tests ability to design anomaly detection logic for streaming email metadata.

Hash TablesGreedyGraphs

Tessian

Find Top K Active UsersMedium

Tests data-structure and algorithm skills for top-K computation at scale.

Hash TablesSortingHeap

Tessian

Find Missing Number in RangeMedium

Assesses your approach to efficient problem solving on large datasets.

Algorithms

Tessian

Pipelines26 questions · ~224 min

Compare batch and stream processing across latency, complexity, cost, and data quality in a modern analytics pipeline.

Data Quality in ETL PipelinesEasy

Approach for maintaining data quality and integrity across ETL pipelines.

IdempotencyData ModelingQuality

Tessian

Design High-Throughput Event PipelineHard

Design a real-time event pipeline that can handle millions of events per second with sub-second latency.

data pipelineevent processinglatency

Tessian

Data Quality in ML PipelinesMedium

Approach for maintaining high quality data across ML pipelines, from ingestion through feature generation and model consumption.

Data QualityInfrastructureData Wrangling

Tessian

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