Worked on the codecov/umbrella repository to enhance client IP extraction in proxied environments, focusing on improving logging accuracy and security. Developed a feature that selects the second-to-last IP address from the HTTP_X_FORWARDED_FOR header, ensuring correct identification of the originating client IP behind multiple proxies. Refined this logic within both the LoginMixin and AsyncGraphqlView components, using Python for backend and API development. The update improved audit trails and analytics reliability by reducing the risk of IP misattribution. This work addressed a nuanced backend challenge, demonstrating attention to detail in handling real-world deployment scenarios involving complex proxy chains.