Top 16
Prep plan
Updated weekly · Last refresh Aug 30

Simpl Backend Engineer Interview Questions

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

16questions
~2htotal time
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1
CodingStart here. 7 questions · ~58 min
Optimize Backend Process AlgorithmHard

Evaluates coding depth and ability to improve performance for a realistic backend task.

performanceAlgorithmsSimpl
Array Manipulation ComplexityMedium

Tests mastery of algorithmic tradeoffs and writing efficient array-based solutions.

space complexitytime complexityArray ManipulationSimpl
Object-Oriented Design for PaymentsMedium

Assesses OOP skills and ability to model backend components cleanly for payment-related features.

designSimpl
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2
System Design6 questions · ~50 min
Uber-Style Ride Sharing DesignHard

Evaluates system design skills for real-time matching, tracking, and scalable backend architecture.

system designdistributed systemsscalabilitySimpl
Browser to Backend Request FlowMedium

Assesses understanding of end-to-end request flow across networking, protocols, and backend entry points.

NetworkingSimpl
Database Sharding and ConsistencyHard

Evaluates distributed data design choices, consistency tradeoffs, and operational considerations.

distributed systemsconsistencySimpl
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3
More topics3 questions · ~25 min
Relational vs NoSQL DatabasesMedium

Assesses data modeling tradeoffs and selection criteria for relational versus NoSQL systems.

nosqlrelational databasesSimpl
OS, Concurrency, and HTTP BasicsMedium

Evaluates understanding of concurrency primitives and the request flow from browser to backend over HTTP.

Operating SystemsconcurrencySimpl
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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
The finish line: interview-readyComplete all 16 questions plus 3 hands-on drills to finish this plan.