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Twine

Game Developer – Remote

Twine
United Kingdom · Contract · Mid-Senior

This role is for a UK-based Unity developer to deliver a mobile application for iOS and Android featuring a 2D animated character and seamless AI integration. The project centers on building a user-friendly app that incorporates pre-rigged Spine 2D animations, a simple and intuitive interface, and a chat system powered by an external AI API. The developer will be responsible for integrating provided character artwork and animations, constructing mobile-optimized UI screens (including home, settings, and a small shop), and implementing audio input/output functionality. Additional responsibilities include managing local app state (such as XP, energy, and purchased items), integrating rewarded ads and in-app subscriptions, and ensuring robust connectivity with a backend chat endpoint via REST API. The initial build is focused and does not require mini-games, but there is potential for ongoing monthly work to add features and improvements. All necessary assets and UI mockups will be supplied, and the ideal candidate will be able to deliver a polished, maintainable app and provide post-launch support.

Responsibilities

  • Integrate Spine 2D character rigs and animations into Unity for mobile platforms
  • Develop and implement mobile-friendly UI screens (home, settings, shop) based on provided mockups
  • Set up and manage audio input and output within the app
  • Handle local app state management, including XP, energy, and inventory tracking
  • Integrate rewarded ads and in-app subscription functionality
  • Connect the app to an external AI-powered chat endpoint via REST API
  • Ensure smooth performance and compatibility across iOS and Android devices
  • Provide regular updates during development and support post-launch maintenance
  • Collaborate on future feature additions and improvements as needed

Skills And Requirements

  • Proven experience developing and shipping Unity mobile apps for iOS and Android
  • Strong proficiency with Spine 2D animation integration in Unity
  • Solid understanding of mobile UI/UX best practices and implementation
  • Experience with audio input/output in Unity applications
  • Familiarity with local state management and in-app purchase systems
  • Demonstrated ability to integrate rewarded ads and subscription models
  • Skilled in REST API integration and handling external endpoints
  • Ability to work independently and communicate progress effectively
  • Based in the UK and available for ongoing collaboration
  • Attention to detail, reliability, and a commitment to delivering high-quality, maintainable code

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

unity ai 2d ios ui android animation
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Posted
Nov 19, 2025
Type
Contract
Level
Mid-Senior
Location
United Kingdom
Company
Twine

Industries

Software Development

Categories

Engineering

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