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Updated weekly · Last refresh Oct 17

Revolut Software Engineer Interview Questions

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

50questions
~11htotal time
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1
CodingStart here. 16 questions · ~215 min
URL Shortener with Alphanumeric PathsHard
Practice

Implement an in-memory URL shortener that maps URLs to unique base-62 alphanumeric paths and resolves them.

CodingData StructuresAlgorithmsRevolut
Thread Safe Debit/Credit FlowHard
Practice

Implement atomic concurrent debit and credit transfers using locks while preventing overdrafts and deadlocks.

data synchronizationCodingedge casesRevolut
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2
System Design15 questions · ~202 min
Card Delivery System DesignHard

Design an ML system that predicts and optimizes Revolut card delivery outcomes.

ML RankingFeature Driftdelivery logisticsRevolut
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3
Execution3 questions · ~40 min
Prevent Double-Bookings With APIsHard
Recently asked

Plan delivery of a booking platform that prevents double-bookings despite unreliable third-party APIs.

booking systemTrade-offsExecutionRevolut
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4
SQL & Data Manipulation7 questions + 3 drills · ~124 min
B-Tree vs BRIN for LedgersMedium
Recently asked

Explain how B-Tree and BRIN indexes differ in PostgreSQL, and how each affects read performance and write amplification.

postgresqlperformanceindexesRevolut
Database Consistency Under ConcurrencyMedium
Practice
Practice drill

Audit account balances against posted ledger entries using aggregation and NULL-safe balance calculations.

deadlocksacid propertiesdata integrityRevolut
Top Transaction Users by CountryMedium
Practice
Practice drill

Use joins, aggregation, and ROW_NUMBER to find the top 3 users per country by total transaction volume.

JoinsRankingAggregationsGoogleFeaturespaceRevolut
Detect Duplicate Transactions in 5 MinutesHard
Practice
Practice drill

Use window functions and conditional aggregation to flag completed transactions that may duplicate one another within five minutes.

Window FunctionsLag/LeadtransactionsRevolutRobinhood
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5
Pipelines3 questions · ~40 min
Transactional Outbox ReliabilityHard
Recently asked

Tests reliable event publishing, failure handling, and microservice consistency patterns.

OrchestrationAutomationIdempotencyRevolut
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6
Behavioral & Leadership4 questions · ~54 min
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7
More topics2 questions · ~27 min
Java Concurrency FundamentalsMedium
Recently asked

Tests knowledge of Java concurrency primitives and diagnosing race conditions.

javaconcurrencyrace conditionsRevolut
Currency Balance Data TypesMedium
Recently asked

Evaluates reasoning about numerical precision, performance, and financial correctness.

Revolut
The finish line: interview-readyComplete all 50 questions plus 3 hands-on drills to finish this plan.