Linux Administrator

Role: Linux Administrator 

Location: Remote

Contract to Hire

The Associate Principal Linux Administrator, requiring strong, deep Linux administration skills with at least 10 years of experience, is responsible for managing and maintaining enterprise Linux server environments through hands-on daily operational activities. This role ensures the stability, performance, security, and availability of Linux infrastructure across on-premises and cloud environments. The position requires strong operational expertise, a proactive approach to system health, and the ability to work across US day and night shifts to provide continuous 24/7 coverage for critical infrastructure.

Primary Duties and Responsibilities:

To perform this job successfully, an individual must be able to perform each primary duty satisfactorily.

• Monitor, manage, and maintain enterprise Linux server environments (RHEL, CentOS, Ubuntu, Amazon Linux) on a day-to-day basis across on-premises and cloud infrastructure 
• Perform routine system health checks including CPU, memory, disk utilization, and process monitoring across all Linux servers 
• Respond to system alerts, service failures, and performance degradation in a timely manner; triage and resolve incidents within defined SLA windows 
• Manage user accounts, groups, permissions, and SSH key administration across Linux systems 
• Administer cron jobs, scheduled tasks, and system services (systemd, init) to ensure uninterrupted operations 
• Perform log analysis and monitoring using tools such as journald, rsyslog, ELK Stack, Splunk, or CloudWatch to identify anomalies and recurring issues 
• Execute day-to-day storage operations including LVM management, filesystem extension, NFS mount management, and disk space remediation 
• Troubleshoot OS-level issues including boot failures, kernel panics, network connectivity problems, and service disruptions 
• Coordinate and execute scheduled maintenance activities including reboots, service restarts, and configuration updates during approved change windows 
• Apply security patches, kernel updates, and bug fixes to Linux servers in alignment with the enterprise patching schedule using Red Hat Satellite and Ansible Automation Platform (AAP) 
• Validate patch deployments in non-production environments prior to production rollouts and perform post-patch validation checks to confirm system stability and service availability 
• Support emergency and zero-day vulnerability patching as directed by the security team 
• Enforce CIS benchmark standards and security baselines on Linux systems; remediate non-compliant configurations 
• Perform periodic security scans using OpenSCAP, Lynis, or Nessus and document findings for remediation tracking 
• Actively manage incidents, service requests, and change records using ServiceNow, ensuring timely updates, proper categorization, and SLA compliance