Dataford
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Prep plan
Updated weekly · Last refresh Aug 30

Discord Data Engineer Interview Questions

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

28questions
~4htotal time
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1
PipelinesStart here. 9 questions · ~73 min
Design Real-Time Ad Event PipelineHard

Design a low-latency ad event pipeline processing up to 900K events/sec with accurate click and impression aggregates for reporting and billing.

InfrastructureStream ProcessingIdempotencyDiscord
ETL Performance and Cost ControlMedium

Assesses your optimization mindset across performance tuning and cost management for data pipelines.

ETL optimizationDiscord
Using AI and Verifying CodeMedium

Assesses your practical use of AI coding tools and your safeguards for correctness and reliability.

Discord
Databases and Storage TradeoffsMedium

Evaluates your ability to select appropriate storage systems based on workload requirements and tradeoffs.

data architecturedatabase conceptsdata storageDiscord
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2
Behavioral & Leadership16 questions · ~130 min
Explaining Your Compensation ExpectationsEasy

Tests whether you can communicate compensation expectations clearly and tie them to scope, impact, and self-awareness.

financial literacyself assessmentsalary expectationsDiscord
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3
More topics3 questions · ~24 min
SQL for Engagement at ScaleHard

Tests your SQL performance skills for large-scale aggregation and analytics workloads.

sql queryperformanceAggregationsDiscord
Debugging Race ConditionsMedium

Tests your systematic debugging skills for concurrency issues.

DebuggingconcurrencyDiscord
Build a Simple Chat ServerMedium

Evaluates your ability to implement core backend functionality for real-time messaging.

NetworkingDiscord

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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Monthly Campaign Performance SummaryEasy
Practice
Practice drill

Aggregate January 2024 campaign data by channel using GROUP BY, filtering, and ordering by total clicks.

JoinsData WranglingAggregationsDNVEversanaDiscord
Top Games Among New Discord UsersEasy
Practice
Practice drill

Use filtering, GROUP BY, and ORDER BY to find the top 5 games played by Discord users who joined in the last 30 days.

Date FunctionsJoinsAggregationsDiscordDomino's
Rank Servers by Abuse Report RatioMedium
Practice
Practice drill

Use CTEs, joins, and aggregations to rank Discord servers by abuse reports per active user.

JoinsCase WhenAggregationsDiscord
The finish line: interview-readyComplete all 28 questions plus 3 hands-on drills to finish this plan.