Worked on security and access control maintenance within the tiiuae/ghaf-infra repository, focusing on updating SSH key management to ensure uninterrupted and secure developer authentication. Delivered a targeted update by replacing a developer’s SSH public key, implementing the change as a single, auditable commit to maintain traceability and minimize operational impact. Employed DevOps and system administration skills, leveraging Nix for configuration management to uphold the repository’s security posture. No major bugs were addressed during this period, as the work centered on routine administrative tasks that preserved secure access and authentication for developers without causing downtime or affecting broader system operations.