Windows Tier 3 Systems Administrator

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We are seeking a highly skilled and experienced Windows Tier 3 Systems Administrator to serve as a technical resource within our IT infrastructure team. This role is responsible for the monitoring and maintenance of key Windows servers and software, and escalation support of Windows-based systems and services. The Tier 3 administrator plays a key role in maintaining high system availability, performing engineering audits, and upgrading, patching, and tuning applications.

• Provide advanced troubleshooting and resolution for complex issues escalated from help desk and tier 1 systems administrators.
• Administer, maintain, and optimize Windows Server environments (2016, 2019, 2022).
• Manage Active Directory, including GPOs, OU structure, DNS, DHCP, and Group Policy troubleshooting.
• Assist on infrastructure projects such as server upgrades, migrations, and patch management.
• Monitor system performance, logs, and security using tools such as PRTG, Windows Event Viewer, and other third‑party monitoring solutions.
• Continually adjust monitoring parameters in PRTG to keep false alarms at a minimum.
• Perform systems and software audits and produce reports as requested.
• Manage virtualization platforms (e.g., Hyper‑V, VMware) and associated virtual environments.
• Automate repetitive tasks and streamline administration using Power Shell and other scripting tools.
• Maintain MS 365 Druva backup and disaster recovery solution, ensuring data integrity and recovery readiness.
• M365 SharePoint online support and configurations.
• Implement and enforce IT security standards, policies, and best practices.
• Collaborate with network, security, and application teams on cross‑functional projects.
• Document systems, configurations, and procedures thoroughly for operational continuity.
• Monitor and execute all software assurance, SLPA, application software, and hardware warranty renewals utilizing the contracts portion of Service Desk for the IT department.
• Update critical engineering systems software.
• Build virtual servers for both Engineering and Development.
• Replace faulty hardware.
• Network and VPN troubleshooting.
• Install driver and firmware updates.
• Escalate to senior engineering staff as needed.
• Manage and audit file servers.
• Patch Sysprep images.
• Manage vendor and circuit information for all sites.
• Backup manager for Sentinel One portal and client updates.
• Manage Offshore virtual machine collection.
• Execute some systems migrations.

• Bachelor’s degree in Computer Science, Information Technology, or a related field, or equivalent experience.
• 5+ years of hands‑on experience in Windows systems administration in an enterprise environment.
• Deep understanding of Windows Server OS, Active Directory, DNS, DHCP, and file/print services.
• Strong Power Shell scripting experience for automation and reporting.
• Experience managing virtualization technologies (Hyper‑V and/or VMware).
• Solid knowledge of backup technologies and disaster recovery planning.
• Strong troubleshooting skills and the ability to work under pressure in a fast‑paced environment.
• Ability to learn and adapt to rapidly changing IT needs.

• Certifications such as Microsoft Certified:
  Windows Server Hybrid Administrator Associate, MCSA, MCSE, or equivalent experience.
• Experience with Microsoft Azure or other cloud platforms.
• Exposure with security and compliance frameworks (e.g., NIST, HIPAA, ISO).
• Experience with enterprise monitoring tools (e.g., Solar Winds, SCOM).
• Exposure to configuration management tools (e.g., SCCM, Intune).

• May require occasional after‑hours or weekend work during system maintenance windows or outages.
• Hybrid work environment both onsite and offsite.
• May involve travel to data centers or remote sites.

Mid‑Senior level

Full‑time

Information Technology