Linux Systems Administrator

Sentinel Technologies

Linux Systems Administrator installing and supporting Red Hat and VMware environments for critical applications. Collaborating on system performance, security, and availability in a hybrid, on-call environment.

Posted 7/16/2026full-timeChicago • Illinois • 🇺🇸 United StatesJuniorMid-Level💰 $82,000 - $110,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in installing, administering, and supporting Red Hat Enterprise Linux and VMware ESXi within HPE infrastructure and Azure cloud environments, with a strong focus on automation, performance tuning, and security management.

Highest-signal resume keywords

Red Hat Enterprise Linux AdministrationVMware ESXi SupportAnsible AutomationHPE Infrastructure ManagementDisaster Recovery Solutions

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Linux Operating SystemsPerformance TuningPatchingMonitoringTroubleshootingCapacity ManagementBackup SolutionsNetworkingSecurity ManagementCI/CD Processes

Soft Skills

Problem-SolvingCommunicationCollaboration

Tools & Technologies

Red Hat SatelliteHPE Server InfrastructureSAN/Storage TechnologiesAzure CloudAutomation Tools

Industry Keywords

Enterprise LinuxVirtualized InfrastructureChange Management24/7 On-Call SupportMission-Critical Applications

Tech Stack

Tools & technologies

AnsibleAzureCloudLinuxVMware

About the role

Key responsibilities & impact

install, administer, and support Red Hat Enterprise Linux, VMware ESXi, HPE infrastructure, and Azure cloud environments
responsible for system availability, performance tuning, automation, patching, monitoring, security, disaster recovery
troubleshoot hardware and software issues
manage capacity and backups
support change management processes
document standards
participate in a 24/7 on-call rotation

Requirements

What you’ll need

2+ years of experience supporting enterprise Linux and virtualized infrastructure
Hands-on experience with Red Hat Satellite for patching, upgrades, system lifecycle management
Strong automation and scripting skills with experience in Ansible, CI/CD processes
Knowledge of HPE server infrastructure, SAN/storage technologies, backup/recovery solutions
Solid understanding of Linux operating systems, networking, and security
Experience troubleshooting and supporting mission-critical applications and infrastructure
Strong problem-solving, communication, and collaboration skills
Legally authorized to work in the US without sponsorship

Benefits

Comp & perks

comprehensive benefits package starting on day one
medical, dental, and vision coverage
company covering approximately 75% of premium costs
eligible for both a 401(k) with company match and a pension plan
optional benefits such as life, accident, legal, and pet insurance
annual or quarterly bonus opportunities tied to safety, quality, and productivity performance
paid time off and paid holidays