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Design banking payment scheduling system

CircleSoftware Engineer · Online Assessment
HardSoftware EngineerOnline AssessmentSystem Design

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This interview question evaluates requirements, scale assumptions, API/data design, architecture, trade-offs, failure modes, and rollout in a realistic interview setting. A strong answer for Design banking payment scheduling system states assumptions, handles edge cases, explains trade-offs, and shows how to validate the result clearly.

Question

Design and implement a banking payment system that:

Adds a cancelPayment operation able to cancel a previously-scheduled payment.

Extends schedulePayment to report and persist both success and failure results.

Removes obsolete payment cases as required.

Produces a report of outgoing transactions sorted by total loss amount.