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Twine

Application Developer – Contract

Twine
Canada · Contract · Mid-Senior

This role involves developing a cross-platform utility app for iOS and Android that enables users to block selected applications using an NFC-triggered mechanism. The app will replicate the core functionality of "The Brick" (getbrick.app), focusing on a seamless user experience for toggling app restrictions via NFC tags. The developer will be responsible for implementing the blocking logic, ensuring reliable NFC integration, and maintaining local device storage for user preferences. The project requires a strong understanding of both mobile platforms' system-level APIs and a commitment to privacy, as no backend or cloud storage will be used.

Responsibilities

  • Design and develop a mobile application for iOS and Android that allows users to select and block specific apps.
  • Integrate NFC functionality to trigger the blocking and unblocking of selected apps.
  • Implement the "Bricked" and "Unbricked" state logic, ensuring accurate status tracking.
  • Utilize the Screen Time API (Family Controls) for iOS and Accessibility Services or Overlay for Android to manage app blocking.
  • Ensure all user settings and preferences are stored securely and locally on the device.
  • Test and debug the application to ensure reliability and a smooth user experience.
  • Provide clear documentation for app usage and NFC setup.

Skills And Requirements

  • Proven experience in developing and deploying mobile applications for both iOS and Android platforms.
  • Strong proficiency with Swift (iOS) and Kotlin/Java (Android).
  • Experience working with NFC APIs and device hardware integration.
  • Familiarity with iOS Screen Time API (Family Controls) and Android Accessibility Services/Overlay.
  • Ability to implement secure local data storage solutions.
  • Excellent problem-solving skills and attention to detail.
  • Strong understanding of privacy and security best practices for mobile apps.
  • Ability to deliver a clean, user-friendly interface.
  • Availability to start immediately and deliver within agreed timelines.

About Twine

Twine is a leading freelance marketplace connecting top freelancers, consultants, and contractors with companies needing creative and tech expertise. Trusted by Fortune 500 companies and innovative startups alike, Twine enables companies to scale their teams globally.

Our Mission

Twine's mission is to empower creators and businesses to thrive in an AI-driven, freelance-first world.

Key Skills

Ranked by relevance

ios android storage swift cloud ai
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Posted
Dec 09, 2025
Type
Contract
Level
Mid-Senior
Location
Canada
Company
Twine

Industries

Software Development

Categories

Engineering

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