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Updated weekly · Last refresh Oct 17

System1 Software Engineer Interview Questions

The questions to prepare for a System1 Software Engineer interview. Questions from real interview reports rank first. Updated daily.

16questions
~2htotal time
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1
CodingStart here. 3 questions · ~25 min
Deck of Cards Class DesignMedium

Tests your ability to design clean, maintainable OOP structures for a common software problem.

object-oriented programmingSystem1
Design a Class StructureMedium

Tests your object modeling skills and ability to translate requirements into maintainable class designs.

system designProgrammingSystem1
OOP Deck of CardsMedium

Tests your ability to design clean OOP abstractions and model domain behavior.

ProgrammingoopSystem1
2
Execution4 questions · ~33 min
Scaling Cloud InfrastructureMedium

Tests your experience with scaling, reliability, and operational trade-offs in cloud environments.

cloud infrastructurescalabilitySystem1
Database Architecture Trade-OffsHard

Tests your ability to choose and justify database architectures based on workload, consistency, and scalability needs.

database architectureSystem1
State Management FrameworksMedium

Tests your ability to reason about state management in modern front-end frameworks and apply it to production systems.

state managementtechnical experienceFrameworksSystem1
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3
Behavioral & Leadership7 questions · ~58 min
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4
More topics2 questions · ~17 min
POST vs PATCH SemanticsEasy

Tests your understanding of HTTP semantics and how they impact API design and client behavior.

api designSystem1
Tableau Server AdministrationMedium

Evaluates your experience with Tableau Server administration and related operational tasks.

System1

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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
SQL and dbms Join ConceptsMedium
Practice
Practice drill

Demonstrate practical SQL and DBMS concepts by calculating customer metrics with joins, aggregation, NULL handling, and ranking.

JoinsProgrammingsqlTiger Analytics
SQL and LeetCode Coding BasicsEasy
Practice
Practice drill

Return the first three easy programming questions from a question bank in ascending ID order.

leetcodeData ManipulationProgrammingBNSF Railway
SQL: Complex Expression ResultMedium
Practice
Practice drill

Calculate digit-power scores such as 3^1 + 6^2 + 7^3, then rank completed HCA requests by facility.

ProgrammingHCA Healthcare
The finish line: interview-readyComplete all 16 questions plus 3 hands-on drills to finish this plan.