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Technology Next Interview Questions

The questions to prepare for Technology Next interviews, across all roles. Questions from real interview reports rank first. Updated daily.

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1
PipelinesStart here. 5 questions · ~40 min
Data Quality in ETL PipelinesEasy

Approach for maintaining data quality and integrity across ETL pipelines.

IdempotencyData ModelingQualityTTechnology Next
Batch vs Stream Processing Trade-offsMedium

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

InfrastructureStream ProcessingETLTTechnology Next
Consistency Across Data SourcesMedium

Approach for keeping records aligned and trustworthy when multiple source systems feed the same pipeline.

InfrastructureQualityTTechnology Next
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2
System Design3 questions · ~24 min
Zero-Downtime Database MigrationHard

Assesses strategy for online schema changes and data migrations.

architecturezero downtimeTTechnology Next
Designing a High-Frequency REST APIMedium

Evaluates API design for low latency, throughput, and reliability.

api designperformancesystem architectureTTechnology Next
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3
Behavioral & Leadership7 questions · ~56 min
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4
More topics3 questions · ~24 min
Optimizing Slow SQL QueriesMedium

Tests SQL performance tuning skills for large-scale claims and reporting datasets.

JoinsperformancesqlTTechnology Next
Optimizing Python for AI WorkloadsMedium

Tests ability to optimize data pipelines and compute for AI workloads.

AIpythonoptimizationTTechnology Next
Memory Management in High-Concurrency .NETMedium

Assesses understanding of memory management and concurrency optimization in .NET.

memory managementconcurrencyTTechnology Next
Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
The finish line: interview-readyComplete all 18 questions plus 3 hands-on drills to finish this plan.