Over 40 months, contributed to JetBrains/JetBrainsRuntime by engineering core graphics, API, and platform features across Java, C/C++, and Vulkan. Delivered robust solutions for cross-platform rendering, including Vulkan backend development, Metal and OpenGL optimizations, and advanced font handling. Enhanced system stability through memory management, concurrency controls, and build automation, while modernizing APIs for extensibility and modularity. Addressed complex bugs in windowing, display configuration, and resource cleanup, improving reliability in multi-monitor and high-DPI environments. Integrated containerization and DevOps practices for scalable builds. The work reflects deep expertise in low-level graphics programming, native integration, and maintainable software architecture within a large-scale runtime.