Linux Administrator

Location:

USA, Remote - , United States
Date Posted:
Aug 10, 2026

Requisition
Job Type:

The Associate Principal, Strong at least 10 years Deep Linux administration skills , Linux Administrator 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 Cloud Watch to identify anomalies and recurring issues
• Execute day-to-day storage operations including LVM management, file system 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 Service Now, ensuring timely updates, proper categorization, and SLA compliance
• Serve as an escalation point for Tier 1/Tier 2 Linux issues during assigned shift
• Participate in root cause analysis (RCA) and post-incident reviews for major Linux-related outages
• Execute approved change requests during maintenance windows including patching, configuration changes, and server builds
• Maintain clear and accurate shift handover notes to ensure operational continuity across US day and night shifts
• Provision new Linux servers (physical, virtual, and cloud) following approved build standards and golden image baselines
• Configure servers post-build including network settings, storage mounts, security hardening, and application-level prerequisites
• Support AMI (Amazon Machine Image) updates and golden image refreshes for AWS EC2 instances
• Execute Ansible playbooks for configuration management, compliance enforcement, and routine operational tasks
• Proactively monitor infrastructure dashboards (Cloud Watch & Splunk ) and act on alerts
• Identify performance bottlenecks and work with senior engineers to implement optimizations
• Perform capacity monitoring and report disk, CPU, and memory trends as inputs to capacity planning
• Work assigned US day shift (EST/CST 8 AM – 6 PM)
• Act as the primary Linux operations contact during assigned shift for incident response, change execution, and escalation management
• Follow runbooks and…