C++ UI Engineer

Our client is building an ambitious real-time interactive product and is looking for a senior-level engineer to take ownership of interface-related systems. This role focuses on the technical backbone behind menus, HUDs, flows, and player interaction layers, rather than visual design alone.Start: ASAPLength: 6 months with possible extensionLocation: Must be in Stockholm 4 days per weekYou will work hands-on with engine-level UI systems, shaping how information is presented, updated, and interacted with at runtime. The position blends low-level engineering with practical problem-solving in a fast-moving production environment. The project is developed using Unreal Engine and relies on a combination of native engine code, scripting, and editor-based workflows.What you will work onArchitect and extend interface-related engine systemsImplement interactive screens, overlays, and presentation logic in UnrealOptimize UI-related code paths for real-time performanceImprove internal workflows and tooling related to interface developmentCollaborate with engineers, designers, and usability specialists to support gameplay needsEnsure interface systems remain flexible and scalable throughout productionTechnical background5+ years of professional experience in game or real-time engine developmentAdvanced C++ skills with experience in large codebasesPractical experience working with Unreal Engine at a system levelExperience implementing interface systems using engine-native solutionsStrong understanding of performance constraints in real-time applicationsFluent professional communication in EnglishWhat kind of person we’re looking forEnjoys solving structural and technical problems rather than only feature workCares about code quality, longevity, and maintainabilityComfortable taking ownership of complex systemsCurious, analytical, and open to iteration