ZorixOS
6+ Deliveroo questions

Deliveroo interview questions and how to prepare

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

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ZorixOS tracks 6 community-reported Deliveroo 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 Deliveroo's known interview style (not claimed as asked at Deliveroo), so you can rehearse the real format. Practice any of them out loud in a free AI mock interview tuned to Deliveroo.

Updated July 2026

Deliveroo interview questions candidates report

Community-reported from real Deliveroo interviews (open-source dataset), most-asked first. Showing 6. Each links to its source.

  1. Design Authentication Manager
    Hash TableLinked ListDesignDoubly-Linked List
    Medium100% asked
  2. Find Words Containing Character
    ArrayString
    Easy98% asked
  3. Count Number of Nice Subarrays
    ArrayHash TableMathSliding Window
    Medium90% asked
  4. Remove Invalid Parentheses
    StringBacktrackingBreadth-First Search
    Hard90% asked
  5. Vertical Order Traversal of a Binary Tree
    Hash TableTreeDepth-First SearchBreadth-First Search
    Hard90% asked
  6. Logger Rate Limiter
    Hash TableDesignData Stream
    Easy73% asked

Practice questions in Deliveroo's style

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

  1. Imagine Deliveroo's customer app has a sudden spike in latency for users in London. Describe your process for diagnosing and resolving this issue, considering the scale of our operations. What key metrics would you monitor?

    Software EngineerDebugging & Incident ResponseTests: Evaluates problem-solving skills, understanding of distributed systems, and ability to handle high-pressure situations under scale.

  2. Design a system to handle real-time order status updates for millions of concurrent users and restaurants on the Deliveroo platform. Consider data consistency, fault tolerance, and scalability. What technologies would you choose and why?

    Software EngineerSystem DesignTests: Assesses system design capabilities, architectural thinking, and trade-off analysis for a large-scale consumer-facing platform.

  3. Write a Python function to calculate the average delivery time for a specific restaurant in a given city, considering only orders completed in the last 24 hours. Assume you have access to an `orders` table with `restaurant_id`, `city`, `start_time`, and `end_time` columns.

    Software EngineerCoding & Algorithmic ThinkingTests: Tests coding proficiency, understanding of data structures, and ability to translate requirements into functional code.

  4. Deliveroo is experiencing issues with its recommendation engine showing irrelevant restaurant suggestions to users. How would you approach debugging this, starting from the user's reported experience to the underlying data pipelines and models?

    Software EngineerDebugging & ReasoningTests: Examines logical reasoning, debugging methodology across different system layers, and understanding of ML system components.

  5. How would you design a notification system for Deliveroo riders about new order assignments? Consider factors like reliability, latency, and how to handle potential push notification delivery failures.

    Software EngineerSystem DesignTests: Evaluates ability to design distributed systems with real-time constraints and high availability.

  6. Our platform processes a massive volume of food orders. How would you design a data model for storing order details, including items, pricing, customer information, and restaurant details, to optimize for both transactional speed and analytical queries?

    Software EngineerData ModelingTests: Assesses understanding of database design principles, trade-offs between normalization and denormalization, and performance optimization for large datasets.

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

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Deliveroo Interview Questions (2026) | ZorixOS