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BNSF Railway Software Engineer Interview Questions

The questions to prepare for a BNSF Railway Software Engineer interview. Questions from real interview reports rank first. Updated weekly.

50questions
~7htotal time
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1
CodingStart here. 4 questions · ~35 min
Check Binary Tree BalanceEasy
Practice

Use postorder recursion to determine whether a binary tree is height-balanced in O(n) time.

RecursionSearchingTreesBNSF Railway
Merge Overlapping Sorted IntervalsMedium
Practice

Sort intervals by start time, then greedily merge overlaps into a non-overlapping result array.

intervalsSortingArray ManipulationBNSF Railway
Java OOP Principles ExplainedEasy

Explain the four core OOP principles in Java with examples of classes, inheritance, abstraction, and polymorphism.

RecursionHash TablesStringsBNSF Railway
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2
Execution6 questions · ~53 min
Plan HA and DR StrategyMedium

Define how you would deliver high availability and disaster recovery for a cloud-hosted application with clear recovery targets and rollout safeguards.

cloud serviceshigh availabilitydisaster recoveryBNSF Railway
Deliver Critical Project With Limited ResourcesMedium

Describe how you executed an important project under tight resource constraints, balancing scope, risks, and stakeholder expectations.

Trade-offsRisk AssessmentResource AllocationBNSF Railway
Balancing Speed Quality and ScopeHard

Describe a time you had to choose between speed, quality, and scope, and how you aligned stakeholders around the trade-off.

Trade-offsRisk AssessmentScope ManagementBNSF Railway
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3
Behavioral & Leadership38 questions · ~333 min
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4
More topics2 questions · ~18 min
Break Reporting Queries with CTEsMedium

Explain how CTEs split a complex reporting query into readable, reusable steps.

SubqueriesData WranglingCTEsBNSF Railway
Compare Periods with LAG and LEADMedium

Explain how LAG and LEAD compare current rows to previous or next periods in time-series SQL analysis.

Window FunctionsLag/LeadDate FunctionsBNSF Railway
Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Top Customers by Sales RevenueEasy
Practice
Practice drill

Use GROUP BY and SUM to rank the top 10 customers by total revenue from a single sales table.

RankingGroup ByAggregationsHousecall ProEquifaxXYZ
Compare Weekly User Activity TrendsMedium
Practice
Practice drill

Aggregate user activity by week, then use LAG to compare sessions and watch time versus the prior active week.

Window FunctionsLag/LeadDate FunctionsB Lab GlobalTapadScale
Compare Signup Cohorts by RetentionHard
Practice
Practice drill

Use CTEs, joins, and date logic to compare 30-day activity rates across monthly signup cohorts.

Window FunctionsDate FunctionsCTEsGappifyDocusignJio
The finish line: interview-readyComplete all 50 questions plus 3 hands-on drills to finish this plan.