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Updated weekly · Last refresh Oct 17

Berkshire Hathaway Software Engineer Interview Questions

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

29questions
~5htotal time
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1
CodingStart here. 5 questions · ~49 min
Two Sum ProblemEasy
Practice

Find two indices in an array whose values add up to a target using a hash map.

Hash TablesArraysTwo PointersBerkshire Hathaway
Linked List ReversalEasy
Practice

Reverse a singly linked list in-place using iterative pointer manipulation.

RecursionLinked ListsArraysBerkshire Hathaway
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2
Execution10 questions · ~98 min
Explain REST vs SOAP ClearlyEasy

Explain RESTful APIs and SOAP clearly, focusing on practical differences that matter for delivery and integration decisions.

Trade-offsScope ManagementBerkshire Hathaway
Discuss Cloud Infrastructure ExecutionEasy

Explain your cloud technology experience through execution choices, risk management, trade-offs, and measurable outcomes.

InfrastructureTrade-offsBerkshire Hathaway
Improve System Performance and ReliabilityEasy

Explain how you would optimize a system for performance, reliability, and user experience while making clear trade-offs and defining success.

Trade-offsSuccess CriteriaRisk AssessmentBerkshire Hathaway
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3
Behavioral & Leadership11 questions · ~108 min
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4
More topics3 questions · ~29 min
Cross Apply OperatorMedium

Assesses your practical SQL knowledge for joining and transforming data with APPLY.

sqlBerkshire Hathaway
Design Database SchemaMedium

Tests your data modeling judgment around performance, integrity, and future change.

Data ModelingQualityBerkshire Hathaway
Cloud Architecture UnderstandingHard

Tests ability to design and reason about cloud system architecture for Berkshire Hathaway Real Estate.

architectureCloudBerkshire Hathaway
Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Handling Missing DataMedium
Practice
Practice drill

Standardize missing observation fields with fallback values, missingness flags, and ordered output.

Window Functionsmissing valuesdata cleaningEversource EnergyCincinnati Children's HospitalAdtalem Global Education
Compare Conversion Rates by ChannelEasy
Practice
Practice drill

Calculate channel-level conversion rates from a single events table using GROUP BY and conditional aggregation.

Group ByCase WhenAggregationsCaesars entertainmentBerkshire HathawayLeague
Database Indexing Trade-offsHard
Practice
Practice drill

Compare PostgreSQL index strategies by read latency, write overhead, storage size, and an overall cost score.

Trade-offsdatabase optimizationdatabase managementHHostinger InternationalPPorch GroupCapital Technology Group
The finish line: interview-readyComplete all 29 questions plus 3 hands-on drills to finish this plan.