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Updated weekly · Last refresh Sep 11

Abacus Software Engineer Interview Questions

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

46questions
~7htotal time
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1
CodingStart here. 8 questions · ~73 min
Implement Binary Search AlgorithmEasy
Practice

Write a binary search function to find a target value in a sorted array.

SearchingAbacus
Longest Unique Substring in EnoMedium
Practice

Use a sliding window and hash map to find the longest substring without repeated characters in a string.

Hash TablesStringsTwo PointersAbacus
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2
Execution28 questions · ~256 min
Technology Stack Fit EvaluationMedium

Tests your ability to assess technical tradeoffs, constraints, and delivery impact for a new stack.

Trade-offsSuccess CriteriaRisk AssessmentAbacus
Lead a Cross-Functional Research LaunchMedium

Describe a project you led end-to-end, focusing on stakeholder alignment, trade-offs, risks, and delivery outcome.

Success CriteriaRoadmappingRisk AssessmentAbacus
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3
Behavioral & Leadership5 questions · ~46 min
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4
More topics5 questions · ~46 min
Optimize Database QueriesMedium

Tests understanding of indexing, query plans, and query rewriting to improve latency.

JoinsData WranglingAggregationsAbacus
Testing and CI for PipelinesEasy

Explain how you apply automated testing and CI practices to data pipelines and pipeline releases.

InfrastructureToolsQualityAbacus
Design a Highly Available ServiceHard

Evaluates your cloud design skills for high availability and resilience.

cloud infrastructurehigh availabilityAbacus
Build Scalable Web ApplicationsMedium

Assesses your web engineering experience and scalability mindset.

technical experienceAbacus
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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Detect Consecutive Losing StreaksMedium
Practice
Practice drill

Identify bet365 users with consecutive losing bets above a risk threshold using ordered streak grouping.

abuse trackingData Manipulationsql querybet365
Monthly Sales Trends by CategoryMedium
Practice
Practice drill

Aggregate monthly sales by product category and use LAG to calculate month-over-month changes.

InfrastructureToolsData WranglingTotal Wine & MoreInc.Benjamin Moore
Resolve Conflicting Customer AttributesMedium
Practice
Practice drill

Use joins, CTEs, and row ranking to resolve conflicting customer profile values across ACME House systems.

JoinsData WranglingQualityRamsey SolutionsACME House
The finish line: interview-readyComplete all 46 questions plus 3 hands-on drills to finish this plan.