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14 questions in the library. A source association does not guarantee a future interview question.
Behavioral and leadership · Coding · System design
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Showing 1–14
Design a banking system that allows users to create accounts, manage funds (deposits, withdrawals, transfers), check account balances, and perform core banking operations securely.
Companies: Revolut, Anchorage Digital, Capital One, PayPal
Last reported Oct 2026
Stored balances and peer-to-peer transfers: concurrent debits, retries with the same request key, and recovery without lost money.
Companies: Revolut, Paypay
concurrency · durability · idempotency · ledger
Last reported Oct 2026
Date-range inventory: atomic multi-night reservations, expiring holds, stale search results, and payment races.
Companies: Revolut, Airwallex, Amazon, Booking.com +10
concurrency · idempotency · inventory-management · payments
Last reported Oct 2026
Design a monitoring and notification platform that tracks cash levels across multiple ATMs and alerts designated representatives when refilling is required based on predefined…
Companies: Revolut
Last reported Sep 2026
Design an ATM system that allows users to perform banking operations such as cash withdrawals, deposits, balance inquiries, and PIN management.
Companies: Revolut, Check
Last reported Aug 2026
Companies: Revolut, Adyen, Amazon, Anthropic +37
Last reported Aug 2026
Design a travel insurance system that allows users to sign up for coverage that automatically activates when they travel, including features like policy management, trip…
Companies: Revolut
Last reported Jul 2026
Implement a thread-safe fund transfer system between accounts using Java and PostgreSQL. Focus on transaction handling and data consistency for concurrent transfers, proper…
Companies: Revolut
Last reported Jul 2026
Design a system that allows users to order a physical card through an app, track its delivery status, and activate it upon receipt, while integrating…
Companies: Revolut
Last reported Jul 2026
Companies: Revolut
System Design
Last reported Jun 2026
Companies: Revolut, Bloomberg, DoorDash, Roblox
Last reported Jun 2026
Companies: Revolut, Amazon, Anduril, Assort +9
Last reported Jun 2026
Build a concurrent restaurant booking system that handles simultaneous reservation requests. The system should manage table availability, prevent double-bookings, and ensure…
Companies: Revolut
Last reported Jun 2026
Money movement across a transactional boundary: balanced ledger entries, retry-safe transfers, uncertain bank responses, and reconciliation.
Companies: Revolut, Capital One, Google
double-entry-ledger · idempotency · reconciliation · state-machines