Senior Mobile Engineer (Objective-C / Cocos - Live Game Evolution)

About Us At UserWise 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 enjoy reviving, scaling, and modernizing high-adoption live games. The Role 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 a live product with real users - Making smart, high-leverage technical decisions - Using AI tools to accelerate development, debugging, and refactoring Why This Role Is Interesting - Work on a game that already has traction and players - See your impact immediately in a live environment - Use AI as a force multiplier, not just a buzzword - Solve real engineering problems—not just greenfield abstractions Who This Is For - Engineers who enjoy fixing, improving, and evolving real products - People who like high ownership and fast execution - Builders who prefer impact over perfection Requirements What You’ll Do - Maintain and extend a legacy 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 a live-service environment - Use AI-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 What We’re Looking For - Strong experience with Objective-C and iOS development - Hands-on experience with Cocos (Cocos2d-x or similar) - Experience working on live mobile games or shipped apps - Ability to navigate and improve legacy 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 Nice to Have - 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) Benefits - Market competitive, tax-free USD salaries - Paid Time Off - Performance Bonus - Annual Performance Reviews