Worked on stability and configurability improvements across two core projects. In prometheus/node_exporter, addressed a memory leak in the macOS Filesystem Collector by applying Objective-C memory management techniques with @autoreleasepool and ensuring proper deallocation of C strings, which reduced memory bloat during filesystem statistics collection. In major/traefik, introduced a strictPrefixMatching configuration option for the Kubernetes Ingress provider, aligning path prefix matching with the Kubernetes specification. This feature included comprehensive documentation updates and new test fixtures to validate behavior. The work demonstrated proficiency in Go, CGO, and system programming, with a focus on reliability and maintainability in production environments.