February 2026 | Announcement of HireRoo's First Mobile (iOS/Android) Engineer Assessment Release

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HireRoo has released its first assessment for mobile engineers in a practical assignment format.

Important > For an overview of the practical assignment format, please refer to the following help center article: https://support.hireroo.io/recruiters/what-is-the-practical-assignment-format

Assessment Overview

This is a practical assignment test where you will build a mobile app that integrates with a backend API.

Instead of merely testing algorithms, you will implement an application that fulfills a series of requirements demanded in actual app development, such as retrieving data from a server, displaying screens, and managing states with user interactions. The supported platforms and languages are as follows:

  • iOS: Supports Swift
  • Android: Supports Kotlin

Main Tasks

This assignment primarily evaluates the following implementation skills:

  • External Integration and Asynchronous Processing: Data retrieval via API communication and data filtering using parameters.
  • UI Construction and Screen Transitions: Building list and detail screens based on retrieved data, and appropriate data passing between screens.
  • State Management and Data Persistence: Managing app state changes accompanying specific user actions and data persistence to local storage.
  • Error Handling: Appropriate exception handling to prevent compromising the user experience (UX), such as during network communication failures or loading during asynchronous processing.

This assessment is ideal for evaluating the following target groups:

  • Positions requiring immediate mobile app development talent: Suitable for verifying practical implementation skills directly applicable to the job, such as "can they build an app that interacts with an API from scratch?" rather than just algorithmic knowledge.
  • Junior to mid-level mobile engineers: Capable of evaluating whether they can correctly understand basic requirements and implement standard UI/UX.
  • (Advanced) Evaluating senior-level design capabilities: Beyond just clearing the assignment, by reviewing whether the code is structured with maintainability and extensibility in mind (e.g., MVVM), this assessment can also be used to evaluate higher-level candidates.

Assessment URLs

You can check the assessment content for each platform via the following links: