Infrastructure System Administrator Jobs in Virginia

Zachary Piper Solutions is seeking a System Administrator to join the Security and Electronic team. The System Administrator will support the design, engineering, integration, operation, and maintenance of electronic security services. There are positions available in Ft. Belvoir and Chantilly, VA. This is an exciting opportunity to support federal customers in an exciting and engaging opportunity. Responsibilities for the System Administrator: * Implementing DoD Security Technical Implementation Guides (STIGs) across traditional IT and Operational Technology (OT) systems.
* Familiarity with system hardening, patch management, and STIG implementation.
* Administer, maintain, and optimize Windows/Linux servers, network devices, and OT systems supporting electronic security infrastructure.
* Perform system hardening, patching, and configuration management in accordance with DoD STIGs and security baselines.
* Performing vulnerability scanning and documenting system vulnerabilities.
* Assist in network and control system troubleshooting, including firewalls, switches, and segmented OT networks.
Required Qualifications for the System Administrator: * Active TS/SCI clearance with the ability to obtain TS/SCI with Polygraph
* 3+ years (Master's), 5+ years (Bachelor's) IT, Cybersecurity, or Risk Management.
* Knowledge of DoD RMF lifecycle, NIST 800-53 controls, and supporting documentation (e.g., eMASS, POA&M).
* Hands-on experience with ACAS, HBSS, vulnerability scanning, mitigation, and STIG implementation across systems.
* Ability to assess, troubleshoot, and manage control networks and security components.
* One of the following certifications is required: CASP CE, CISSP, CISSP-ISSAP, CISSP-ISSEP, CSSLP, CISA, CISM, GCED, or GCIH.
Compensation for the System Administrator: * Salary range: $100,000 - $135,000 *depending on experience*
* Comprehensive Benefits: Medical, Dental & Vision Insurance, 401k, PTO, Paid Holidays, Sick leave as required by law This job opens for applications on 9/5/2026. Applications for this job will be accepted for at least 30 days from the posting date. #LI-ES1 #LI-Onsite System Administrator, Systems Administration, Infrastructure Management, Windows Server, Windows Server 2016, Windows Server 2019, Windows Server 2022, Active Directory, Group Policy, GPO Management, DNS, DHCP, LDAP, Kerberos, Windows Administration, Linux Administration, Red Hat, CentOS, Ubuntu, Server Hardening, Patch Management, System Patching, Configuration Management, Endpoint Management, PowerShell, Bash Scripting, Python Scripting, Automation, Infrastructure Automation, System Monitoring, Performance Monitoring, Log Management, Event Viewer, SIEM Integration, Splunk, Elastic Stack, System Troubleshooting, Root Cause Analysis, Virtualization, VMware, VMware vSphere, VMware ESXi, vCenter, Hyper-V, Virtual Machines, VM Provisioning, VM Migration, Snapshots, Virtual Infrastructure, Datacenter Operations, Storage Management, SAN, NAS, RAID, iSCSI, NFS, Cloud Virtualization, Hybrid Environments, Networking, Network Administration, TCP/IP, IPv4, IPv6, Subnetting, VLANs, Switching, Routing, Firewalls, Network Security, Cisco Networking, Juniper, Switch Configuration, Router Configuration, Network Troubleshooting, Packet Capture, Wireshark, Load Balancing, VPN, Remote Access, Network Monitoring, SNMP, Cybersecurity Support, STIG Implementation, DISA STIGs, System Hardening, Vulnerability Management, Vulnerability Scanning, ACAS, Nessus, HBSS, Endpoint Security, Threat Detection, Incident Response Support, Security Compliance, RMF Framework, DoD RMF, NIST 800-53, NIST SP 800-82, A&A, eMASS, POA&M, Security Controls, Risk Management, Compliance Audits, ICS, SCADA, OT Systems, Industrial Control Systems, Control Networks, OT Security, Critical Infrastructure, System Inventory, Asset Management, Configuration Baselines, Network Segmentation, Secure Architecture, Infrastructure Support, System Integration, Deployment, Imaging, System Builds, Lifecycle Management, Backup and Recovery, Disaster Recovery, High Availability, Failover Clustering, Data Protection, DoD Environment, DoDIN, CCRI, CCORI, CYBERCOM, Federal Systems, TS/SCI Clearance, Secure Environments, Government IT, ISO Standards, Quality Assurance, Technical Documentation, SOP Development, Operational Procedures, Change Management, ITIL, ServiceNow, CISSP, Security+, CASP, CISM, CISA, GCIH, GCED