Worked on the facebook/fbthrift repository to deliver a Thrift Flag Observer improvement focused on simplifying observer lifecycle management. The feature introduced a named creator for the Thrift Flag observer, which eliminated the need to construct an underlying dependency graph for flag nodes. This approach reduced memory usage and improved initialization speed, resulting in a more efficient runtime and a clearer maintenance path. The work involved refactoring the observer pattern and optimizing memory usage, all implemented in C++. No major bugs were reported or fixed during this period, and the contribution demonstrated strong skills in C++, software design, and system optimization.