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Full-time, Contract
Posted 5d ago
~40 hrs/week
Responsibilities
The Linux Administrator is responsible for managing and maintaining enterprise Linux server environments across on-premises and cloud infrastructure. This includes performing system health checks, incident response, security patching, and executing configuration changes to ensure system stability and availability.
Requirements
Candidates must have at least 10 years of progressive hands-on experience in Linux/Unix system administration within an enterprise environment. Proficiency with Ansible, Red Hat Satellite, AWS, and ITSM platforms like ServiceNow is required to perform the role effectively.
Full job description
Summary:
This is a Contract to hire position.
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 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
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 (CloudWatch & 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 standard operating procedures (SOPs) for all operational activities and maintain shift logs with current server and service status
Create and maintain runbooks, SOPs, knowledge base articles, and operational checklists in Confluence
Track tasks, incidents, and project work in JIRA with accurate and timely status updates
Collaborate with network, storage, security, and application teams to resolve cross-functional issues
Participate in team meetings, sprint reviews, and operational planning sessions
Qualifications:
The requirements listed are representative of the knowledge, skill, and/or ability required. Reasonable accommodations may be made to enable individuals with disabilities to perform the primary functions.
10 + years of progressive hands-on experience in Linux/Unix system administration in an enterprise environment
Demonstrated experience managing Linux servers in production environments at scale
Strong hands-on experience with Ansible Automation Platform (AAP) including playbook execution and operational automation
Working experience with Red Hat Satellite for patch deployment and content lifecycle management
Hands-on experience with AWS Linux EC2 instances including basic instance operations, snapshots, and security group management
Demonstrated experience implementing and maintaining CIS benchmarks and security baselines across enterprise Linux systems
Extensive experience with enterprise Linux patching programs including change management, patch validation, and emergency patching procedures
Working experience with ITSM platforms such as ServiceNow for incident, problem, and change management
Proficiency with collaboration and project management tools including JIRA and Confluence
Excellent problem-solving abilities and analytical thinking skills
Strong written and verbal communication skills with ability to produce clear shift handover notes and operational documentation
Ability to multitask and prioritize effectively in a fast-paced operational environment
Related keywords
LinuxRHELCentOSUbuntuAmazon LinuxAnsibleRed Hat SatelliteAWSEC2ServiceNowJIRAConfluenceSystemdLVMNFSELK Stack
Ness Digital Engineering is a global provider of Intelligent Data and Software Engineering services, specializing in data, AI, and cloud-powered solutions that drive innovation and deliver measurable business outcomes. With over 25 years of engineering expertise and our proprietary data and software platforms and accelerators, Ness helps enterprises modernize systems, accelerate product development, and achieve scalable impact with speed and precision.
Our differentiation lies at the intersection of Industry domain and Technology. We focus on clients across financial services, technology and ISVs, Media & Entertainment, manufacturing, transportation and retail. Ness is known for its delivery excellence, deep domain knowledge, and product engineering expertise. Ness Digital Engineering is a portfolio company of KKR, a leading global investment firm.
Offices: 1 World Trade Center, Suite 83-E, New York, NY 1007, US
Ness Digital Engineering is a global provider of Intelligent Data and Software Engineering services, specializing in data, AI, and cloud-powered solutions that drive innovation and deliver measurable business outcomes. With over 25 years of engineering expertise and our proprietary data and software platforms and accelerators, Ness helps enterprises modernize systems, accelerate product development, and achieve scalable impact with speed and precision.
Our differentiation lies at the intersection of Industry domain and Technology. We focus on clients across financial services, technology and ISVs, Media & Entertainment, manufacturing, transportation and retail. Ness is known for its delivery excellence, deep domain knowledge, and product engineering expertise. Ness Digital Engineering is a portfolio company of KKR, a leading global investment firm.
Offices: 1 World Trade Center, Suite 83-E, New York, NY 1007, US