OS Support Admins (Linux)

Job Summary: A dedicated Linux Administrator responsible for building, maintaining, and optimising Linux-based infrastructure. Ensures high availability, security, and performance of all Linux servers, mentors junior team members, collaborates with cross-functional teams, and drives automation and best practices across the environment. Key Responsibilities: Installs, configures, and hardens Linux operating systems (RHEL, CentOS, Ubuntu, SUSE); Manages user accounts, groups, permissions, and SSH access in accordance with security policies; Performs patch management, kernel upgrades, and software installations using native package managers (YUM, APT, Zypper); Monitors system performance, analyses logs, and troubleshoots issues related to CPU, memory, storage, and network; Designs, implements, and tests backup, recovery, and disaster-recovery procedures; Automates routine tasks and deployments with shell scripting (Bash), Python, or configuration-management tools (Ansible, Puppet, Chef); Deploys and manages virtualisation (KVM, VMware) and containerisation platforms (Docker, Kubernetes); Integrates Linux servers with directory services (LDAP, Active Directory) and identity-management solutions; Collaborates with network, storage, security, and application teams to support infrastructure projects and migrations; Maintains detailed documentation of configurations, change records, and operational runbooks; Participates in on-call rotations and responds to incidents in a 247 support model; and, Stays current with emerging Linux technologies, security best practices, and industry standards. Required Skills & Qualifications: Bachelors degree in Computer Science or related technology field preferred 2+ years of hands-on Linux administration in a production environment. Hands-on experience with scripting languages such as Shell scripting Strong working knowledge of ITIL principles and ITSM Current understanding of industry trends and methodologies Outstanding verbal and written communication skills Excellent attention to detail Strong interpersonal skills and leadership qualities