System Administrator III

Quivera Enterprises

Senior Technical Resource providing operational and infrastructure support for a mission-critical enterprise datacenter environment. Ensuring system availability, security, and performance at IHS.

Posted 7/11/2026full-time🇺🇸 United StatesMid-LevelSeniorWebsite

Tech Stack

Tools & technologies

CloudLinux.NETVMware

About the role

Key responsibilities & impact

Provide advanced operational and infrastructure support for a mission-critical enterprise datacenter environment supporting the Indian Health Service (IHS).
Serve as a senior technical resource responsible for maintaining the availability, security, and performance of enterprise systems across Microsoft Windows, Linux, and VMware environments.
Function as a Subject Matter Expert (SME) for Shared Services Enterprise Datacenter operations, providing Tier III technical support, leading infrastructure initiatives, and supporting enterprise modernization efforts.
Administer, maintain, and support enterprise Microsoft Windows and Linux server environments.
Perform daily systems administration activities, including server maintenance, patch management, account administration, monitoring, and issue resolution.
Provide Tier III operational and technical support for escalated infrastructure incidents.
Execute enterprise backup, recovery, and disaster recovery procedures for Data Operations Center (DOC) systems.
Perform hardware and software upgrades, system configuration, resource allocation, performance tuning, and capacity planning.
Administer and troubleshoot VMware virtualization infrastructure.
Monitor enterprise systems utilizing Microsoft management tools and datacenter monitoring solutions.
Support physical datacenter operations, including environmental monitoring systems, DCIM applications, and physical security technologies.
Develop, maintain, and update technical documentation, standard operating procedures (SOPs), system diagrams, and project documentation.
Develop and maintain automation scripts using PowerShell, Visual Basic, .NET, C#, or other scripting languages to improve operational efficiency.
Lead infrastructure implementation projects, system upgrades, migrations, and operational improvement initiatives.
Coordinate technical activities across multiple departments and project teams.
Analyze and resolve highly complex infrastructure issues with minimal supervision.
Ensure compliance with organizational security standards, policies, and applicable federal regulations.
Maintain accurate documentation of incidents, changes, configurations, and system performance metrics.
Provide technical mentoring and guidance to junior support personnel when appropriate.
Perform other duties as assigned.

Requirements

What you’ll need

Bachelor's degree in Information Technology, Computer Science, Engineering, or a related technical discipline, or an equivalent combination of education and experience.
Minimum of five (5) years of progressively responsible experience administering enterprise server infrastructure.
Extensive experience supporting enterprise datacenter operations.
Strong knowledge of Microsoft Windows Server operating systems.
Strong knowledge of Linux operating systems.
Hands-on experience administering VMware virtualization environments.
Experience supporting enterprise backup and recovery operations.
Knowledge of Data Center Infrastructure Management (DCIM) platforms.
Experience supporting physical datacenter monitoring and security systems.
Experience using Microsoft enterprise management tools.
Ability to develop scripts utilizing PowerShell, Visual Basic, .NET, C#, or similar scripting languages.
Strong analytical, troubleshooting, and problem-solving skills.
Demonstrated ability to lead infrastructure projects.
Excellent written, verbal, and interpersonal communication skills.
Ability to work independently with minimal supervision.
U.S. Citizenship required.
Ability to successfully obtain and maintain all required government background investigations and system access.
In accordance with contract requirements, employees assigned to this position must obtain the following certifications within three (3) months of onboarding: CompTIA Server+ CE, CompTIA Cloud+ CE, CompTIA Security+ CE.

Benefits

Comp & perks

Equal Employment Opportunity
Commitment to fostering a diverse and inclusive workforce

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

Server AdministrationPatch ManagementPerformance TuningCapacity PlanningScripting With PowerShellScripting With Visual BasicScripting With .NETScripting With C#TroubleshootingAnalytical Skills

Soft Skills

Excellent Communication SkillsInterpersonal SkillsProblem-Solving SkillsAbility To Work Independently

Certifications

CompTIA Server+ CECompTIA Cloud+ CECompTIA Security+ CE