Senior Mobile Engineer; Objective-C ​/Cocos - Game Evolution

About Us

At User Wise Services, we build and scale mobile games played by millions worldwide. Our focus is simple: move fast, deliver impact, and use modern tools—including AI-assisted workflows—to accelerate development and iteration.

We’re now looking for engineers who enjoyreviving, scaling, and modernizing high-adoption live games.

You’ll work on a proven, high-performing mobile game built with Objective-C and Cocos, helping evolve it for the next stage of growth.

This is not a "build from scratch" role—it’s about:

• Improving alive product with real users
• Making smart, high-leverage technical decisions
• UsingAI tools to accelerate development, debugging, and refactoring

• Work on agame that already has traction and players
• See your impact immediately in a live environment
• UseAI as a force multiplier, not just a buzzword
• Solve real engineering problems—not just greenfield abstractions

• Engineers who enjoyfixing, improving, and evolving real products
• People who likehigh ownership and fast execution
• Builders who preferimpact over perfection

• Maintain and extend alegacy Objective-C + Cocos codebase
• Optimize performance, memory usage, and runtime behavior for mobile
• Refactor and modernize systems without breaking live operations
• Ship features, events, and improvements in alive-service environment
• UseAI-assisted workflows(code generation, debugging, refactoring, test creation) to move faster
• Collaborate closely with product, design, and analytics to drive impact
• Identify quick wins vs. deep tech improvements and prioritize accordingly

• Strong experience with Objective-C and iOS development
• Hands-on experience with Cocos (Cocos2d-x or similar)
• Experience working onlive mobile games or shipped apps
• Ability to navigate and improvelegacy codebases
• Strong understanding of performance optimization (CPU, memory, rendering)
• Pragmatic mindset: you know when to refactor vs. ship
• Comfortable leveraging AI tools (e.g., Copilot, ChatGPT, etc.)as part of your workflow

• Experience with C++ (common in Cocos-based systems)
• Familiarity with game loops, rendering pipelines, and animation systems
• Experience migrating legacy systems to modern architectures
• Exposure to analytics-driven development (A/B testing, live ops)

• Market competitive, tax-free USD salaries
• Paid Time Off
• Performance Bonus
• Annual Performance Reviews