Oleh Kushchenko developed a runtime configuration feature for the palantir/witchcraft-go-server repository, enabling dynamic control over HTTP/2 support in Go-based backend services. By introducing a disableHTTP2 field within the server struct and a corresponding WithDisableHTTP2 setter, he centralized protocol management, allowing operators to toggle HTTP/2 without code changes. The implementation works by clearing the TLSNextProto map when HTTP/2 is disabled, effectively restricting the server to HTTP/1.1. This enhancement focused on improving security and reliability by reducing protocol-related risks in production environments. His work demonstrated backend development and server configuration skills, with a strong emphasis on Go programming.