Kukuk worked on the PowerShell/openssh-portable repository, where he developed and integrated a 2038-safe login and logout tracking system using the wtmpdb library. He updated build systems and configuration scripts in C to ensure seamless inclusion of wtmpdb, replacing the legacy wtmp mechanism for session accounting. By adjusting login record handling, Kukuk enabled accurate and reliable session tracking that will remain functional beyond the year 2038, addressing long-term compliance and maintainability concerns. His work demonstrated depth in system programming and configuration management, laying a solid foundation for future migration to 2038-safe utilities within the project’s authentication infrastructure.