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Updated weekly · Last refresh Oct 17

Southwest Airlines Software Engineer Interview Questions

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

33questions
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1
Behavioral & LeadershipStart here. 24 questions · ~192 min
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2
More topics9 questions · ~72 min
Docker for a Non-Technical PersonMedium

Assesses your ability to communicate infrastructure concepts clearly to non-experts.

dockerexplanationSouthwest Airlines
Python Data Copy at ScaleHard

Evaluates your ability to design an efficient data transfer approach at large scale.

data transferpythonSouthwest Airlines
Synchronous vs Asynchronous MessagingMedium

Assesses system design fundamentals and your understanding of messaging semantics.

asynchronousSouthwest Airlines
Circular Queue WalkthroughMedium

Tests data structures knowledge and your ability to explain implementation details.

Data StructuresSouthwest Airlines
Design a University DatabaseMedium

Evaluates data modeling skills and your ability to design for real-world entities.

database designSouthwest Airlines
Object-Oriented and Java Plus BehavioralMedium

Assesses OOP/Java fundamentals and how you apply them in real projects.

javaData StructuresoopSouthwest Airlines
Multithreading, OOP, Kafka, and PythonMedium

Evaluates concurrency understanding and practical experience with modern data streaming tools.

kafkaoopSouthwest Airlines
Automating Infrastructure as CodeHard

Evaluates your DevOps practices, tooling, and ability to improve delivery reliability.

infrastructure as codeAutomationSouthwest Airlines
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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Your Data ProjectMedium
Practice
Practice drill

Use joins, aggregation, and a CTE to identify TikTok Shop sellers with at least two completed orders.

experienceJoinsData ManipulationTikTokTikTok Shop
Integration Methods You’ve UsedHard
Practice
Practice drill

Summarize documented integration methods, usage counts, selection contexts, and latest decision dates with a PostgreSQL query.

experienceJoinsdata managementSalesforce
SQL ExperienceMedium
Practice
Practice drill

Aggregate approved employee hours by department, including departments without qualifying records.

experienceJoinsCase WhenNational IndemnityDayforceAvalara
The finish line: interview-readyComplete all 33 questions plus 3 hands-on drills to finish this plan.