User Wise in Portugal is seeking a skilled mobile game engineer to improve and maintain a high-performing game built with Objective-C and Cocos. The role involves optimizing performance, extending a legacy codebase, and using AI tools for faster development. Ideal candidates have strong experience with Objective-C, hands-on experience with Cocos, and the ability to navigate legacy systems. This position offers market competitive salaries, PTO, and performance bonuses.