Worked on the JetBrainsRuntime repository to enhance code quality and maintainability by focusing on targeted refactoring and bug resolution. Applied C++ expertise to simplify the Deoptimization::print_statistics function, removing redundant conditional logic while preserving existing behavior and reducing technical debt. Addressed a critical build system issue by correcting an include directive in thread.inline.hpp, ensuring proper dependency management and preventing potential compilation errors. Emphasized code review and debugging skills throughout the process, reinforcing repository coding standards. The work contributed to a more stable and maintainable codebase, with improvements that support long-term development and reliability within the JetBrainsRuntime project.