Sebastian Reimers developed user access provisioning for the RISC-V Box within the TUM-DSE/doctor-cluster-config repository, focusing on secure onboarding and resource management. He updated the Nix configuration to add a new authorized user, ensuring that access control was both auditable and easily traceable through commit history. By isolating changes to the Nix-based access control system, Sebastian minimized potential impact on other components and streamlined future onboarding processes. His work leveraged skills in system administration and access control, addressing the need for controlled, secure user management on shared compute resources. The project demonstrated careful attention to governance and operational security.