ZorixOS
2+ NPCI questions

NPCI interview questions and how to prepare

The questions candidates report from NPCI interviews, sorted by how often they come up, with difficulty and topics, plus original practice written in NPCI's interview style.

Practice NPCI questions free All companies

ZorixOS tracks 2 community-reported NPCI interview questions, drawn from an open-source dataset of real interview reports and sorted by how frequently each one comes up. Every question links to its source. Alongside them are 78 original ZorixOS practice questions written in NPCI's known interview style (not claimed as asked at NPCI), so you can rehearse the real format. Practice any of them out loud in a free AI mock interview tuned to NPCI.

Updated July 2026

NPCI interview questions candidates report

Community-reported from real NPCI interviews (open-source dataset), most-asked first. Showing 2. Each links to its source.

  1. Special Array I
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    Easy100% asked
  2. Special Array II
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    Medium100% asked

Practice questions in NPCI's style

Original ZorixOS questions written the way NPCI interviews, so you rehearse the real format. Not claimed as asked at NPCI.

  1. Imagine a spike in UPI transaction failures during peak hours. As a Software Engineer, how would you diagnose the root cause, considering NPCI's infrastructure scale and potential bottlenecks in the payment gateway or bank integrations?

    Software EngineerSystem Design & DebuggingTests: Evaluates ability to debug complex distributed systems under load and understand NPCI's specific technical challenges.

  2. NPCI operates a high-throughput, low-latency environment. Describe how you would design a real-time monitoring system to detect anomalies in transaction processing, such as sudden drops in success rates or increases in latency, for a service like Aadhaar Enabled Payment System (AePS).

    Software EngineerSystem DesignTests: Assesses system design skills for critical financial infrastructure at scale.

  3. You observe a consistent 5% failure rate for a specific type of UPI transaction originating from a particular bank. Walk through your debugging process, detailing the logs you'd examine, the systems you'd trace, and how you'd collaborate with the bank's technical team.

    Software EngineerDebuggingTests: Tests practical debugging skills in a multi-party financial ecosystem.

  4. Consider the data pipeline for processing daily settlement reports for RuPay. Outline the key components and potential failure points, and how you would ensure data integrity and timely delivery.

    Software EngineerSystem DesignTests: Evaluates understanding of data processing pipelines and reliability engineering in a financial context.

  5. Write a Python function to simulate the processing of 1 million concurrent UPI transactions, highlighting potential concurrency issues and how you might mitigate them using appropriate data structures or concurrency primitives.

    Software EngineerCoding & ReasoningTests: Assesses coding proficiency and understanding of concurrency in a high-volume transaction system.

  6. Design a distributed cache system to store frequently accessed customer profile data for a service like BHIM. What are the trade-offs between consistency and availability in this scenario?

    Software EngineerSystem DesignTests: Probes system design choices for performance and scalability in a user-facing financial service.

72+ more NPCI-style questions are in the free library, each practiceable live with adaptive follow-ups and an honest scorecard. Start free.

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NPCI Interview Questions (2026) | ZorixOS