Top 19
Prep plan
Updated weekly · Last refresh Oct 17

Fundbox Backend Engineer Interview Questions

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

19questions
~3htotal time
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1
System DesignStart here. 5 questions · ~42 min
Data Consistency in MicroservicesHard

Tests your consistency strategy across services, including transactions and eventual consistency.

distributed systemsconsistencymicroservicesFundbox
Architectural Decision MakingMedium

Assesses your system design judgment, trade-off thinking, and communication of architecture.

Decision MakingexperiencearchitectureFundbox
Database Trade-OffsMedium

Assesses your ability to choose data storage systems based on requirements and constraints.

Trade-offsFundbox
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2
Coding6 questions · ~51 min
Analyze Time and Space ComplexityEasy

Explain how to derive time and space complexity for a coding solution and justify the final Big O bounds.

Hash TablesArraysSortingFundbox
Linked List Merge and Index ProductMedium

Tests algorithmic reasoning and efficient implementation for array and linked-list problems.

Linked ListsdesignFundbox
Algorithm Interview PracticeMedium

Assesses problem-solving strategy and coding fundamentals for backend interviews.

AlgorithmsFundbox
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3
Behavioral & Leadership6 questions · ~51 min
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4
More topics2 questions · ~17 min
SQL for Loan Time WindowMedium

Assesses SQL and data manipulation skills for time-window queries in a fintech context.

Data AnalysistransactionsFundbox
Choosing an ArchitectureMedium

Evaluates architectural judgment and the ability to justify trade-offs based on requirements.

Decision MakingarchitectureFundbox
Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
The finish line: interview-readyComplete all 19 questions plus 3 hands-on drills to finish this plan.