During January 2025, Mikko Saarinen developed a secure SSH access provisioning feature for the tiiuae/ghaf-infra repository, focusing on infrastructure management and DevOps practices. He added a new SSH public key for user 'mikkos' to the developer configuration using Nix, enabling controlled access to the build infrastructure. This approach implemented per-user access control, streamlining onboarding for new developers while maintaining security through version-controlled key management. Mikko’s work demonstrated practical application of SSH key management and infrastructure as code, addressing the need for efficient, auditable access provisioning without introducing bugs, and laying groundwork for scalable developer onboarding processes.