Description The Linux System Administrator is responsible for the installation, configuration, maintenance, security, and performance of Linux-based servers and infrastructure. This role ensures system availability, reliability, and operational efficiency while supporting business applications, users, and IT initiatives. This is a hybrid working role that requires 3 days onsite, in office, per week. Responsibilities Administer Linux servers and operating systems across development, test, and production environments. Monitor system health, performance, and availability. Perform operating system installations, upgrades, and patching. Implement and maintain security controls and compliance requirements. Troubleshoot and resolve hardware, software, and infrastructure issues. Manage user accounts, permissions, and authentication services. Maintain backup and recovery processes. Develop and maintain infrastructure automation solutions. Create and update technical documentation, procedures, and system diagrams. Participate in incident response, root cause analysis, and problem resolution. Support change management and system maintenance activities. Collaborate with application, network, security, and cloud teams. Qualifications Bachelor's degree in Information Technology, Computer Science, Information Systems, or related field; or equivalent work experience. Relevant certifications preferred (RHCSA, RHCE, Linux+, LPIC, AWS SysOps, or equivalent). 3+ years of experience administering Linux operating systems in enterprise environments. Experience supporting physical, virtual, and cloud-hosted Linux servers. Experience with enterprise monitoring, backup, and security tools. Strong experience with Linux distributions such as: Red Hat Enterprise Linux (RHEL) Rocky Linux AlmaLinux Ubuntu SUSE Linux Enterprise System Administration Installation, configuration, and maintenance of Linux servers. User and group administration. Filesystem management and disk provisioning. Service management using systemd. Performance tuning and system optimization. Patch management and operating system upgrades.

Scripting and Automation Proficiency in:

Bash shell scripting Python (preferred) Ansible or similar automation tools Ability to automate routine administrative tasks.

Networking Understanding of:

TCP/IP DNS DHCP SSH NFS LDAP VPN

technologies Experience troubleshooting network connectivity issues.

Virtualization and Cloud Experience with:

VMware vSphere Hyper-V KVM AWS, Azure, or Google Cloud Managing virtual machines and cloud infrastructure. Security Knowledge of Linux security best practices.

Experience with:

SELinux/AppArmor Firewall configuration (firewalld, iptables, nftables) Vulnerability remediation Access controls and auditing Security compliance standards Monitoring and Logging Experience with monitoring and logging tools such as:

Nagios Zabbix Splunk ELK Stack Prometheus Grafana Storage and Backup Knowledge of:

RAID configurations LVM management SAN/NAS environments Backup and recovery procedures Disaster recovery planning Preferred Skills Container technologies (Docker, Podman). Kubernetes or OpenShift administration. Configuration management tools (Ansible, Puppet, Chef). DevOps practices and CI/CD pipelines. Git version control. Infrastructure as Code (Terraform). Enterprise directory services integration. Experience in highly available and clustered environments. Soft Skills Strong analytical and troubleshooting abilities. Excellent written and verbal communication skills. Ability to work independently and within a team environment. Strong organizational and time-management skills. Customer service and stakeholder engagement skills. Ability to manage multiple priorities in a fast-paced environment. Physical and Operational Requirements Ability to participate in on-call rotations and after-hours support. Ability to support maintenance windows during evenings or weekends as needed. Ability to lift and install server hardware when required. Must be able to obtain and maintain any required security clearances. Success Factors A successful Linux System Administrator will: Maintain high system availability and uptime. Proactively identify and resolve issues before service impact. Automate repetitive tasks to improve operational efficiency. Ensure systems remain secure, patched, and compliant. Provide excellent support to users and technical teams.