Deliveroo Data Engineer Interview Questions

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

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PipelinesStart here. 3 questions · ~24 min

Approach for keeping data consistent during a legacy-to-new-platform migration, including validation, replay safety, and reconciliation.

Handle Late Data in StreamingHard

Design a streaming pipeline that can absorb late-arriving events while keeping aggregates correct and downstream tables stable.

Stream ProcessingIdempotencyData Modeling

Deliveroo

Design a Data Pipeline ProjectHard

Evaluates your ability to design end-to-end data pipelines with reliability, scalability, and clear tradeoffs.

system design

Deliveroo

More topics4 questions · ~32 min

Tests practical PySpark optimization across execution plans, shuffles, partitions, joins, caching, and memory.

Parse Cron ExpressionsHard

Tests your ability to implement correct parsing logic for cron expressions.

Programming

Deliveroo

Performance Bottleneck ResolutionMedium

Tests ownership, analytical diagnosis, prioritization, and measurable impact when improving data pipeline performance.

accountabilitybehavioralanalytical judgment

Deliveroo

Explaining Technical Trade-offs ClearlyMedium

Tests whether you can translate complex engineering trade-offs into clear business decisions for non-technical stakeholders.

technical communicationTrade-offsStakeholder Management

Deliveroo

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