System Administrator III

Major Tool & Machine
Dallas, TX, United States
1 day ago
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Role details

Contract type
Permanent contract
Employment type
Full-time (> 32 hours)
Experience level
Expert
Experience required
7 years minimum
Working hours
Regular working hours

Tech stack

Microsoft Windows Active Directory Amazon Web Services Microsoft Azure Cloud Computing CompTIA Security+ Information Systems Dynamic Host Configuration Protocol Linux Domain Name System (DNS) Hyper-V Identity and Access Management
+21 more
Linux Servers System Center Configuration Manager Windows Servers Networking Basics Routing Windows PowerShell Runbook Systems Integration TCP/IP Virtual Local Area Networks Virtualization Technology Scripting Cloud Platform System Office365 Reliability of Systems Firewalls (Computer Science) Microsoft InTune Information Technology Casper Suite Data Management Vmware

Job description

  • Working under limited supervision, the IT System Administrator III is a senior-level technical role responsible for managing, optimizing, and securing the organization’s infrastructure. This position provides advanced support, leads system implementations, and acts as an escalation point for complex issues across servers, networks, applications, and cloud environments.
  • To perform this job successfully, an individual must be able to perform each essential duty satisfactorily. The requirements listed below are representative of the knowledge, skill, and/or ability required. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.

Responsibilities:

  • Administer, maintain, and optimize Windows and/or Linux server environments
  • Manage infrastructure services including Active Directory, DNS, DHCP, Group Policy, identity and access management, and directory synchronization
  • Oversee enterprise storage, virtualization platforms (VMware/Hyper-V), and backup/DR solutions
  • Implement and maintain security standards, patching, hardening, and monitoring across all systems
  • Provide Tier III incident and problem resolution for escalated infrastructure issues
  • Lead system upgrades, migrations, integrations, and infrastructure projects
  • Manage cloud environments such as Microsoft 365, Azure, or AWS
  • Develop and maintain technical documentation, diagrams, SOPs, and runbooks
  • Collaborate with cross-functional teams including Networking, Security, Helpdesk, and Application Support
  • Perform capacity planning and make recommendations for system improvements, * Collaboration, Trust & Engagement: Builds strong working relationships with Networking, Security, Helpdesk, and Application Support teams; communicates clearly during migrations, upgrades, and Tier III incidents so cross-functional partners stay informed; earns trust as the go-to escalation point for complex infrastructure issues.
  • Customer Focus & Impact: Understands how server, identity, storage, and cloud reliability affect end users and business units; resolves Tier III incidents and problems in ways that minimize disruption and rebuild confidence in IT; delivers infrastructure projects and migrations that create lasting value rather than short-term fixes.
  • Results & Accountable: Takes ownership of enterprise infrastructure (AD, DNS, DHCP, GPO, storage, virtualization, backup/DR) with a bias toward action; drives patching, hardening, and monitoring on schedule; leads upgrades and migrations to completion and holds self accountable for system stability and security posture.
  • Business & Financial Insights: Applies sound judgment to capacity planning, licensing (e.g., M365, Azure, AWS), and infrastructure investment recommendations; balances cost, performance, and risk when proposing system or platform improvements; understands the business impact of downtime, security gaps, or under-provisioned capacity.
  • Innovation & Courage: Proactively identifies opportunities to modernize, automate, or consolidate infrastructure while operating within ITAR and export-control boundaries (e.g., data segregation, access restrictions on regulated systems); has the courage to enforce compliance-driven security standards even when they slow down convenience or push back on non-compliant requests; challenges outdated configurations or manual processes, and adapts confidently as environments evolve toward hybrid/cloud models without compromising controlled-technical-data safeguards; documents changes clearly (SOPs, runbooks, diagrams) to keep improvements sustainable and audit-ready.

Requirements

Systems Administration/Management, Systems Administration/Management, Information Technology & Information Systems, Information Systems/Technology IS/IT Administration, Cloud Applications, Linux Operating System, Microsoft Windows Server, Microsoft Active Directory, DHCP (Dynamic Host Configuration Protocol), DNS (Domain Name System), * 7+ years of hands-on experience as a system administrator or similar role, required

  • Bachelor’s degree, preferred
  • Relevant certifications preferred (e.g., MCSA/MCSE, Azure Administrator, AWS SysOps, VMware VCP, CompTIA Security+)
  • Ability to travel (20%)

Desired Proven Attributes:

  • Advanced knowledge of Windows Server and/or Linux systems
  • Strong experience with virtualization (VMware, Hyper-V)
  • Familiarity with cloud platforms (Azure, AWS, Microsoft 365)
  • Experience with PowerShell or similar automation/scripting tools
  • Strong understanding of networking fundamentals (TCP/IP, routing, firewalls, VLANs)
  • Experience with endpoint management platforms (Intune, SCCM, Jamf, etc.)
  • Knowledge of security best practices, compliance standards, and threat mitigation
  • Excellent troubleshooting, documentation, and communication skills

Competencies:

  • Strong analytical and problem-solving abilities
  • Ability to work independently and lead technical initiatives
  • Effective communication with both technical and non-technical stakeholders
  • High attention to detail and commitment to system reliability and security, * Prolonged periods sitting at a desk while working on a computer
  • Ability to lift up to 15 pounds as required
  • Must be able to quickly navigate manufacturing areas
  • Ability to stand, bend, crawl, stretch, lay, and squat for equipment maintenance

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