Microsoft Windows Systems Administrator

Job Title: Systems Administrator IV
Location: Denton, TX
Employment Type: Contractor

Department: IT Infrastructure
Reports To: IT Operations Manager

Job Summary:

We are seeking a skilled Systems Administrator who can provide advanced administration and engineering support for enterprise infrastructure, including Windows/Linux servers, virtualization, Active Directory, storage, backup, and cloud services. Serves as an escalation point for complex issues, leads infrastructure projects and upgrades, supports security and compliance initiatives, and develops automation and standards to improve reliability and operational efficiency.

Key Responsibilities:

• Install, configure, and manage Windows Server operating systems in virtualized environments (VMware).
• Deploy, configure, and maintain CrowdStrike agents on Windows VMs for endpoint detection and response (EDR).
• Monitor and troubleshoot Windows system performance, security issues, and incidents.
• Manage Active Directory, Group Policies, and related Windows services.
• Perform regular patching, updates, and security hardening of Windows servers and VMs.
• Document system configurations, procedures, and security compliance activities.
• Automate deployment and maintenance tasks using PowerShell or other scripting languages.
• Collaborate with other infrastructure teams to integrate security tools effectively.

Preferred Qualifications:

• 7+ years of progressive experience in systems administration, infrastructure engineering, or a related IT role.
• Advanced experience administering Windows Server environments, including Active Directory, Group Policy, DNS, DHCP, and file services.
• Strong experience with virtualization technologies such as VMware vSphere/ESXi or Microsoft Hyper-V.
• Working knowledge of Linux administration in mixed Windows/Linux environments.
• Strong understanding of TCP/IP, VLANs, DNS, firewalls, certificates, and network troubleshooting as they relate to server infrastructure.
• Experience implementing server hardening, vulnerability remediation, patch management, privileged access, and cybersecurity best practices.
• Proficiency with PowerShell and other scripting or automation technologies.
• Experience with infrastructure monitoring, alerting, capacity management, and performance troubleshooting.
• Demonstrated ability to troubleshoot complex, multi-system incidents and perform root cause analysis (RCA).
• Experience leading server migrations, infrastructure upgrades, hardware refreshes, and other complex technical projects.
• Experience creating and maintaining technical documentation, system diagrams, build standards, SOPs, and disaster recovery procedures.
• Ability to serve as a senior escalation resource and provide technical guidance and mentoring to less-experienced administrators.
• Strong communication skills with the ability to work effectively with cybersecurity, networking, application, engineering, and business teams.
• Bachelor’s degree in Information Technology, Computer Science, or a related field preferred; equivalent professional experience considered.
• Relevant certifications such as Microsoft Certified: Windows Server Hybrid Administrator Associate, Azure Administrator Associate, VMware VCP, Red Hat RHCSA/RHCE, or CompTIA Security+ are preferred. Knowledge of ITIL processes and security frameworks (NIST, CIS, CMMC Controls).