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 daily.

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CodingStart here. 8 questions · ~85 min

Walk Through Your Online Assessment SolutionMedium

Practice

Walk through a Codility interval-merging solution using sorting, overlap detection, and linear merging.

CodingArraysAlgorithms

BNSF Railway

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System Design7 questions · ~75 min

Ingesting Frequent Event Data at BNSFHard

Design a reliable event-ingestion backend for BNSF operations, including queueing, processing, replay, and optional ML enrichment.

backend integrationdistributed systemsdata ingestion

BNSF Railway

Design Two API RoutesMedium

Design two API routes with clear contracts, validation, error handling, and service boundaries.

designapi gatewayAPI interaction

BNSF Railway

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SQL & Data Manipulation8 questions · ~85 min

Remove Duplicates Keeping LatestMedium

Practice

Delete duplicate contact records while retaining the most recently updated row for each email address.

Window Functionsdata cleaningRanking

BNSF Railway

Pivot Rows Into ColumnsHard

Practice

Pivot dv01 loan performance into delinquency balance columns for each securitization deal.

PivotCase WhenAggregations

BNSF Railway

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Execution11 questions · ~117 min

Design External Partner API ApproachMedium

Explain how you would design an external partner API while balancing usability, security, reliability, and long-term maintainability.

Launch PlanningTrade-offsScope Management

BNSF Railway

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Technical Fundamentals5 questions · ~53 min

equals vs == and ImmutabilityMedium

Tests Java equality, hashing, and immutability implications for collections.

java

BNSF Railway

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Behavioral & Leadership9 questions · ~96 min

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