During September 2025, Jon worked on the kolyma-labs/instances repository, developing automated per-user provisioning for NixOS environments. He implemented a system using Nix and Home Manager that enables reproducible, secure onboarding for the user lambdajon by importing user-specific configurations. His approach included defining hashed passwords, managing group memberships, and automating the retrieval of SSH authorized keys directly from a GitHub URL, ensuring seamless and secure access across deployments. Jon’s work focused on system configuration and user management, providing a foundation for scalable, traceable developer workstation setups. The feature was delivered with clear commit traceability and no reported bugs.