CDW · 12 hours ago
Senior Linux System Administrator
Somerset, NJ
Contract
Hybrid
Senior Level, Lead/Staff
10+ years expCDW is seeking a Senior Linux Systems Administrator for a 6 month contract to hire role. The role involves overseeing a robust estate of over 2,500 Red Hat Enterprise Linux systems and leading advanced administration, configuration, and performance optimization of these systems.
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Responsibilities
Lead advanced administration, configuration, and performance optimization of Red Hat Enterprise Linux (RHEL) systems
Architect and manage RHEL KVM virtualization environments, including provisioning, troubleshooting boot issues, and fine-tuning for optimal performance
Oversee lifecycle management of HPE ProLiant hardware, including upgrade analysis, firmware upgrades, component replacements, and remote diagnostics via iLO
Design and execute robust processes for infrastructure patching, reboot orchestration, and content lifecycle management
Administer and enhance security posture through deployment and maintenance of EDR and SIEM agents, ensuring compliance with CVE remediation SLAs
Analyze and resolve kernel-level system bottlenecks and network latency, delivering actionable performance tuning strategies
Manage HPE storage platforms (Primera, Alletra), including SAN zoning, volume provisioning, LVM configuration, and fiber channel switch operations
Maintain critical datacenter services: NTP/Chrony, Elastic Stack, Puppet, Cobbler, Rundeck, Squid Proxy, DNS, and Postfix
Implement proactive monitoring using tools such as Nagios/Naemon, Prometheus, and PRTG, ensuring high availability and rapid incident response
Develop and maintain automation frameworks using Ansible, Python, Perl, and shell scripting to streamline operational workflows
Respond to service requests and incident tickets with precision, adhering to rigorous change management and production protocols
Provide detailed procedural documentation and remote guidance for external datacenter teams across geographically distributed locations
Qualification
Required
Minimum 10 years of hands-on experience in enterprise-level Linux system administration and technical operations; prior experience in financial services is highly advantageous
Proven expertise in RHEL 7/8, including deep familiarity with KVM virtualization and system internals
Advanced knowledge of HPE ProLiant server architecture, diagnostics, and lifecycle management
Demonstrated proficiency in security operations, including EDR/SIEM agent management and vulnerability remediation
Experience with HPE SAN technologies, including fabric zoning, Primera/Alletra storage systems, and fiber channel networking
Working knowledge of Puppet and Cobbler for configuration and provisioning automation
Proficient in scripting languages: Python, Perl, and Bash; capable of developing scalable automation solutions
Solid understanding of networking fundamentals, including VLANs, trunking, routing, multicast, and NAT
Preferred
Red Hat Certified System Administrator (RHCSA) or Red Hat Certified Engineer (RHCE) certification preferred
Company
CDW
At CDW, we know how to make technology work so people can do great things.
10001+ employees
H1B Sponsorship
CDW has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (59)
2024 (49)
2023 (37)
2022 (86)
2021 (44)
2020 (19)
Funding
Current Stage
Public CompanyTotal Funding
$58.74M2015-08-01Post Ipo Equity· $58.74M
2013-06-27IPO
2008-07-31Series Unknown
Leadership Team
Christine Leahy
President & CEO
Sanjay Sood
Chief Technology Officer
Recent News
2026-01-05
2025-12-24
2025-12-03
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