During September 2025, Anubhav contributed to the TUM-DSE/doctor-cluster-config repository by implementing a user role reassignment and access provisioning feature. He migrated a user from the 'students' group to 'chair-members', updating configuration files, SSH keys, and expiration policies to reflect the new role. This work leveraged Nix for configuration management and emphasized system administration and user management best practices. By ensuring all changes were auditable through version control, Anubhav improved the repository’s role-based access control and streamlined onboarding and offboarding processes. The feature enhanced security and traceability, though the scope was focused and did not involve bug fixes.