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Design a system that receives chargeback requests via an API, aggregates them into files, and transmits those files to card brand servers, while handling constraints such as duplicate prevention, maximum file size limits, and time windows per card brand.
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Hello Interview · 1 record
Nubank
Design a chargeback processing system for card brands
Reported Aug 4, 2026 · 11 source reports
MID_LEVEL, SENIOR, STAFF
Source snapshot: Nov 12, 2026
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