> Markdown version of [/jobs/ext/4673436-senior-windows-system-administrator](https://www.wearedevelopers.com/jobs/ext/4673436-senior-windows-system-administrator). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Windows System Administrator - **Company:** TRINZIC CORP - **Location:** Huntsville, AL, United States - **Experience:** Expert - **Salary:** $100,000 - $150,000 - **Contract:** Permanent contract - **Skills:** Microsoft Windows, Active Directory, Domain Controllers, Microsoft Azure, Backup Devices, Cyber Security, Dynamic Host Configuration Protocol, Disaster Recovery, Domain Name System (DNS), Hyper-V, Identity and Access Management, Microsoft Security Essentials, Microsoft Software, System Center Configuration Manager, Windows Servers, Routing, Public Key Infrastructure, Windows PowerShell, Security Content Automation Protocol, Software Deployment, TCP/IP, Virtual Local Area Networks, Virtualization Technology, VMware VSphere, Software Vulnerability Management, Software Troubleshooting, Microsoft InTune, Azure Security Center, SC Clearance, Infrastructure Automation Frameworks, Information Technology, Patch Management, Data Management, Wsus - **Published:** November 11, 2026 - **Apply:** https://dejobs.org/x/x/ACDC1BB6BBD141B4AA6B2385E1BD962B/job/ ## About the Role * U.S. Citizenship required. * Active Secret clearance required; or ability to obtain and maintain secret clearance. * 7+ years of experience administering enterprise Windows environments. * Experience supporting Windows Server 2016, 2019, and 2022 environments. * Experience administering Domain Controllers, DNS, DHCP, and enterprise authentication services. * Experience with MECM/SCCM, workstation imaging, software deployment, and endpoint management. * Experience supporting Windows 10 and Windows 11 enterprise environments. * Experience administering enterprise patch management through WSUS, MECM/SCCM, or similar platforms. * Experience developing and maintaining PowerShell automation solutions. * Experience providing direct customer support in a professional enterprise IT environment. * Strong troubleshooting, communication, organizational, and customer service skills. * Ability to communicate effectively with technical staff, leadership, and non-technical users. * Ability to work independently, manage competing priorities, and lead technical initiatives., * Microsoft certifications such as Azure Administrator Associate, Windows Server Hybrid Administrator Associate, or equivalent. * DoD 8140 / 8570 IAT Level II certification (e.g., Security+ CE) or higher. * Experience supporting Department of Defense IT environments. * Experience supporting classified information systems. * Experience administering MECM/SCCM in large-scale enterprise environments. * Experience implementing and troubleshooting Group Policy in complex environments. * Experience with DISA STIG implementation, SCAP compliance, ACAS remediation, and RMF processes. * Experience with Microsoft Defender for Endpoint, Intune, Entra ID, or other Microsoft security technologies. * Experience with VMware vSphere, Hyper-V, or other virtualization platforms. * Experience with enterprise storage, backup, and disaster recovery solutions. * Familiarity with PowerShell Desired State Configuration (DSC) and infrastructure automation. * Familiarity with TCP/IP, VLANs, routing, switching, DNS, and firewall technologies. * Experience supporting executive leadership, government customers, or mission-critical users in a customer-facing role. * Experience leading technical projects, mentoring junior administrators, and serving as a technical escalation point. ## Description As a Senior Windows Systems Administrator, you will serve as a technical lead responsible for the administration, maintenance, security, and modernization of enterprise Windows infrastructure supporting classified and unclassified mission environments. This role combines advanced systems administration responsibilities with a strong customer service focus. The successful candidate will administer Active Directory, Group Policy, Windows Server, MECM/SCCM, and enterprise endpoint management solutions while serving as a trusted technical resource for end users, customers, and mission stakeholders. The position requires the ability to communicate complex technical concepts to non-technical personnel, resolve customer issues professionally and efficiently, and ensure a positive user experience across all supported environments. Working closely with systems administrators, infrastructure engineers, cybersecurity personnel, network engineers, and end users, you will provide technical leadership while ensuring reliable, secure, and responsive IT services that support mission execution., * Administer and maintain enterprise Active Directory environments, including users, groups, organizational units, and delegated administration. * Design, implement, and troubleshoot Group Policy Objects (GPOs) supporting security, compliance, and operational requirements. * Manage Windows Server infrastructure, including Domain Controllers, DNS, DHCP, file services, and authentication systems. * Administer enterprise patch management utilizing WSUS, MECM/SCCM, and related Microsoft technologies. * Deploy, manage, and support Windows 11 workstations, operating system upgrades, software deployments, and endpoint lifecycle activities. * Develop and maintain workstation imaging and deployment solutions using MECM/SCCM, MDT, WDS, or similar technologies. * Provide Tier 2 and Tier 3 support for escalated user, workstation, and infrastructure issues. * Serve as a senior technical resource for customers and end users, ensuring timely resolution of incidents and service requests. * Implement DISA STIGs, perform vulnerability remediation, and support cybersecurity compliance efforts. * Develop PowerShell automation and administrative scripts to improve operational efficiency. * Support CAC/PKI authentication, certificate services, and identity management solutions. * Collaborate with engineering and cybersecurity teams to support RMF requirements and secure system operations. * Mentor junior administrators and assist with technical training and knowledge sharing. * Maintain documentation, standard operating procedures, and knowledge base articles.