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Sr. Microsoft Systems Administrator (Sys Admin) Public Trust with Security Clearance

Job Posted 2/4/2025
Ascension Federal Services Inc
Washington, DC 20277
United States
Job Description
Sr. Microsoft Systems Administrator (Sys Admin) Must be able to obtain a Public Trust Location: Washington, DC/Hybrid
Shift:
• Two days per week onsite requirement at DOT HQ, Washington DC.
• Once every 23 months support existing server infrastructure in a 24x7 on call escalation capacity as
part of a team rotation. Experience: Must have a minimum of 10 years of experience administrating and managing servers and systems, cloud infrastructure, file and print environments, specializing in Windows operating systems. Must have advanced knowledge of Microsoft Active Directory and SQL Server. Must possess a Microsoft Certified Solutions Expert (MCSE) - Server Infrastructure or equivalent. Duties: Responsible for the day-to-day management of the Windows Server infrastructure, to include, oversight of Active Directory and SQL Server. Provides leadership to the Windows Server team, overseeing activities within server imaging, Active Directory management, and SQL Server. Responsible for incident management as it relates to Active Directory and SQL Server. Performs advanced troubleshooting of complex system issues.
Works primarily in a virtualized environment. Job Summary : The Microsoft Server Engineer position will provide support to the Active Directory Team and for IPv6-related activities. This candidate will be responsible for all IPv6 integration activities for the Windows Server team including providing support for IPv6 Testing, design, implementation, and integration with Windows Active Directory, MS ADFS, and Domain Controllers. The candidate will be working with a team of server engineers to troubleshoot issues for multiple systems in multiple datacenter locations. The candidate will provide support, implementation, and design services for Windows-based
systems across the enterprise. The candidate will be responsible for resolving and completing assigned tasks and change requests and will act as an escalation for support issues. The candidate will also be responsible for applying new solutions through research and collaboration with team members and will be advising on course of actions for new application initiatives. Top Qualifications, Skills, Experience or Certifications:
• Expert-level knowledge of Windows OS-based computer devices and managing Active Directory, Group Policy Objects,
registry and files system security as needed.
• Strong knowledge in Active Directory, Multi-factor Authentication, Public Key Infrastructure, and identity and access
management.
• Intermediate experience scripting in PowerShell to perform automation of tasks.
• Experience performing dual-stack implementation of IPv4 and IPv6, ideally experience deploying and operating IPv6 only
environments.
• Experience performing dual-stack and IPv6-only testing of Windows Servers, Domain Controllers, SCCM, and other
Windows-based systems
• Experience trouble-shooting IPv6 authentication issues with VPN
• Experience trouble-shooting issues with replication and service issues via sites and services in an MPLS-hybrid
environment.
• Experience operating in federal government enterprise environments and apply Security Technical Implementation
Guides (STIG's) strongly preferred.
• Experience managing active directory for on-prem and cloud through MS ADFS, Azure, and AWS.
• Experience with hardware and software purchases
• Experience managing environments of 2000+ servers across multiple field site locations. Job Role Specific Requirements:
• Active Directory Certificate Services
• Active Directory Group Policy
• Active Directory Federation Services
• Active Directory Sites and Services
• Azure Active Directory
• Azure Cloud Services
• IPv4 and IPv6
• Microsoft Hyper-V
• PowerShell
• Windows Server 2016, 2019 and 2022
• Windows Failover Clustering
• Windows File and Folder sharing including DFS-R
• Windows Print Services
• VMware vSphere
• VMware vCenter Note: Candidate must be a U.S. citizen or green card holder who has resided in the U.S. for at least 3 years and the ability to obtain a public trust.