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Updated weekly · Last refresh Aug 30

Affinity Interview Questions

The questions to prepare for Affinity interviews, across all roles. Questions from real interview reports rank first. Updated weekly.

33questions
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1
CodingStart here. 13 questions · ~118 min
Longest Substring Without RepeatsMedium
Practice

Find the longest substring with all unique characters using a sliding window.

Hash TablesStringsTwo PointersAffinity
Implement Binary SearchEasy

Tests algorithm implementation skills and correctness reasoning.

RecursionArraysSearchingAffinity
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2
Execution15 questions · ~136 min
Handle Conflict Within Your TeamEasy

Explain how you handle team conflict while keeping delivery on track and maintaining trust across stakeholders.

Trade-offsRisk AssessmentScope ManagementAffinity
Prioritize Across Competing Data ProjectsEasy

Explain how you prioritize across multiple concurrent data engineering projects with competing stakeholder needs and limited capacity.

Trade-offsRoadmappingScope ManagementAffinity
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3
More topics5 questions · ~45 min
Fault Tolerance in Data PipelinesHard

Approach for building fault tolerance into a distributed data pipeline, including retries, idempotency, and recovery controls.

InfrastructureIdempotencyQualityAffinity
Relational Databases and Example QueriesEasy

Tests depth of experience with relational modeling and writing correct SQL queries.

JoinsGroup ByAggregationsAffinity
Design a Blogging ServiceHard

Evaluates your ability to design a scalable blogging service and make key architectural trade-offs.

designAffinity
Real-Time Data Processing DesignHard

Tests system design skills for streaming, latency, and scalability requirements.

InfrastructureStream ProcessingQualityAffinity
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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
The finish line: interview-readyComplete all 33 questions plus 3 hands-on drills to finish this plan.