Worked on the excaliburjs/Excalibur repository, focusing on engine development and memory management using TypeScript. Addressed a critical memory leak by ensuring that entities are properly removed from internal maps upon deletion, which prevents unbounded map growth and reduces overall memory usage. This targeted fix improved the stability and reliability of entity and query management systems, supporting longer runtimes and scalability for larger game projects. The solution was implemented with minimal code changes, reducing the risk of regressions and enabling efficient code review. Demonstrated strong skills in game development, memory management, and disciplined engineering practices within a TypeScript codebase.