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4+ PwC questions

PwC interview questions and how to prepare

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

Practice PwC questions free All companies

ZorixOS tracks 4 community-reported PwC 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 98 original ZorixOS practice questions written in PwC's known interview style (not claimed as asked at PwC), so you can rehearse the real format. Practice any of them out loud in a free AI mock interview tuned to PwC.

Updated July 2026

PwC interview questions candidates report

Community-reported from real PwC interviews (open-source dataset), most-asked first. Showing 4. Each links to its source.

  1. Longest Common Prefix
    ArrayStringTrie
    Easy100% asked
  2. Two Sum
    ArrayHash Table
    Easy100% asked
  3. Median of Two Sorted Arrays
    ArrayBinary SearchDivide and Conquer
    Hard74% asked
  4. Roman to Integer
    Hash TableMathString
    Easy74% asked

Practice questions in PwC's style

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

  1. Imagine PwC is launching a new AI-powered tax advisory tool for small businesses in India. How would you design the core data pipeline to ingest tax documents (PDFs, scanned images, spreadsheets), process them for OCR, and extract relevant financial data for analysis? Consider data volume, accuracy requirements, and potential PII handling.

    Software EngineerSystem DesignTests: Evaluates system design thinking for a data intensive application, considering scalability and specific data processing challenges.

  2. A client is experiencing significant performance degradation on their PwC-built internal audit management platform, particularly during month-end reporting. Describe your debugging process, starting from the initial report to identifying the root cause. What tools and techniques would you use to diagnose the issue in a distributed system?

    Software EngineerDebuggingTests: Assesses problem-solving skills and systematic debugging approaches for complex software issues.

  3. We are developing a new feature for our global compliance reporting software that allows users to dynamically generate regulatory reports based on custom filters. Write pseudocode for a function that takes a dataset of financial transactions and a set of filter criteria, and returns the matching transactions. Discuss potential optimizations for large datasets.

    Software EngineerCoding ReasoningTests: Tests algorithmic thinking and coding efficiency for data manipulation tasks.

  4. PwC is exploring using a graph database to manage relationships between clients, projects, and consultants for better resource allocation. Describe the trade-offs between using a graph database versus a traditional relational database for this specific use case. What kinds of queries would be significantly faster in a graph database?

    Software EngineerSystem DesignTests: Evaluates understanding of different database paradigms and their applicability to business problems.

  5. A core component of PwC's digital transformation services involves integrating disparate client systems. You're tasked with building a microservice that acts as an API gateway to aggregate data from multiple legacy client systems. What are the key architectural considerations for building a robust and scalable API gateway in this context?

    Software EngineerSystem DesignTests: Probes architectural design skills for integration scenarios at scale.

  6. Consider PwC's 'Digital Accelerators' platform. If a bug is reported where users cannot upload certain types of client documents, how would you approach identifying the bug, from code review to potential network issues?

    Software EngineerDebuggingTests: Assesses practical debugging skills in a realistic software development scenario.

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

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PwC Interview Questions (2026) | ZorixOS