Senior Systems Administrator

Design, implement, and maintain core infrastructure services critical to enterprise operations Provide technical leadership across virtualization platforms, artificial intelligence, identity systems, cloud environments, and enterprise collaboration services Administer, maintain, monitor, report on, and support operating systems, applications, and services Apply best practices for SLAs, redundancy, high availability, and disaster recovery Analyze problems routinely, troubleshoot complex issues, and design resolutions for systems and applications Lead the design, planning, installation, and support of computer systems, network hardware, software applications, cloud platforms, and peripherals Support business-driven initiatives through planning and system design Champion business and digital transformation, including AI, identity federation, and hybrid cloud adoption Exercise independent judgment in planning, scheduling, organizing, controlling, reporting, and monitoring IT projects Use the Help Desk ticketing system for incident and problem management, customer interaction, and follow-up Create and maintain system configuration documentation, standard operating procedures, runbooks, and architecture diagrams Maintain reports on system downtime, preventative maintenance plans, and disaster recovery Contribute to cross-training and task/role planning to create growth and education opportunities for junior staff Assist with management of Active Directory, Group Policies, users, and computers Provide Tier-3 escalation support and coordinate or elevate unresolved issues and emergencies according to continuity and disaster recovery plans Liaise with end users, management, and systems departments to resolve IT support issues Participate in the on-call rotation for production support and support change management processes Provide shift-based continuous monitoring of on-premises, remote, and cloud compute, platforms, and storage performance for a global network infrastructure Requirements Bachelor’s degree in a computer-related curriculum and 5 years of networking and operating system experience, or AA degree and 6+ years in networking and operating system design, test, and maintenance, or equivalent related experience Experience managing/implementing VPS Windows and Linux server technologies, including RHEL, CentOS, Alma Linux, Rocky, and Ubuntu, on-premises and in the cloud Strong understanding of Active Directory, DFS, DNS, DHCP, and Group Policy management Experience with Microsoft Office 365/Azure, including Exchange Online, Teams, SharePoint Online, InTune, Purview, Copilot Studios/Microsoft Foundry, BLOB storage, NSG, Azure Firewall, and Conditional Access Policies Experience with hypervisor technologies such as Broadcom/VMware, Hyper-V, and Azure Local Experience with virtual desktop technologies such as Azure Virtual Desktop, Omnissa Horizon, and Citrix Virtual Desktop Experience with database technologies including Microsoft SQL, Postgres, and mySQL Experience with web servers including IIS, Apache/Tomcat, and Nginx Experience with mail security gateways including IronPort, ProofPoint, and Exchange Online Protection Experience with identity management and federation services including Microsoft ADFS/Entra, Identity Federation, and Cisco DUO Experience with platform configuration/monitoring tools such as PRTG, SolarWinds, and Nagios Knowledge of TCP/IP networking and related network services, including DNS, ARP, VLANs, SMTP, DHCP, and load balancers Must be self-motivated and able to work in a team environment Well-refined troubleshooting skills and ability to determine root cause and resolve systemic problems Ability to manage multiple tasks and prioritize issues effectively Ability to create, document, and follow processes and procedures Must be eligible for DoD Personal Security Clearance Must hold one or more of: VMware Certified Professional (VCP), CompTIA Network+, Microsoft Certified Solutions Associate (MCSA), Cisco Certified Network Associate (CCNA), or CISSP Must be a U.S. citizen due to U.S. Government contract requirements Preferred: experience with SAN, NAS, virtual storage, backup technologies, Copilot licensing and Copilot Studio AI apps/bots, Microsoft Enterprise CA, Azure Local, Amazon Kubernetes Services, Azure Virtual Desktop, MFA/federation services, enterprise backup and replication, and Microsoft PowerShell scripting Must be able to work overtime and on/off shifts as required On call 24x7 for problem and issue resolution Able to support rack-mounted equipment up to 7 feet off the ground Core Competencies Demonstrates expertise in managing and implementing virtualization platforms, cloud environments, and identity management systems while ensuring high availability and disaster recovery. Proficient in troubleshooting complex IT issues and providing technical leadership across enterprise operations. Highest-signal resume keywords Virtualization Platforms Management Cloud Environment Implementation Active Directory Administration Disaster Recovery Planning Technical Leadership ATS Optimization Keywords Hard Skills Windows Server Technologies Linux Server Technologies Database Technologies Web Server Management Identity Management Network Services Knowledge Troubleshooting Skills System Configuration Documentation Platform Monitoring Tools Virtual Desktop Technologies Soft Skills Self-Motivated Team Collaboration Effective Prioritization Process Documentation Problem-Solving Certifications & Qualifications VMware Certified Professional (VCP) CompTIA Network+ Microsoft Certified Solutions Associate (MCSA) Cisco Certified Network Associate (CCNA) CISSP Industry Keywords Disaster Recovery High Availability Identity Federation Digital Transformation Cloud Adoption Tools & Technologies Microsoft Office 365 Azure VMware Hyper-V PRTG SolarWinds Nagios IIS Apache Exchange Online #J-18808-Ljbffr