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# Senior Systems Administrator

- **Company:** Koniag Services, Inc.
- **Location:** Fort Belvoir, VA, United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Microsoft Windows, Active Directory, Systems Engineering, Data Centers, Data Recovery, Disaster Recovery, Domain Name System (DNS), VMware ESX Servers, Failover, Windows Servers, NetApp Applications, Service Pack, TCP/IP, Virtualization Technology, Unified Endpoint Management, Vmware
- **Published:** October 30, 2026
- **Apply:** https://www.clearancejobs.com/jobs/9278770/senior-systems-administrator

## About the Role

* Advanced enterprise Windows server, directory services, virtualization, and incident-resolution capability.
 * Experience enforcing configuration baselines, security patches, and controlled administrative changes.
 * Ability to perform advanced systems engineering independently and guide less experienced administrators.
 * Proven ability to diagnose and resolve complex enterprise infrastructure failures independently.
 * U.S. citizenship, a final Top Secret clearance based on a Tier 5 investigation, ICD 704 SCI eligibility, and appropriate SCI indoctrination by the start of performance, as applicable to the assigned duties and DD Form 254., * Advanced Windows and VMware administration.
 * Identity and storage engineering.
 * Security hardening, recovery and major-incident response.
 * Ability to document Government-support work accurately and protect controlled or classified information under applicable policies.

DESIRED SKILLS AND COMPETENCIES

 * Experience with VMware, Microsoft endpoint infrastructure, enterprise SAN/storage, and Rubrik/NetApp products.
 * Experience with DoD data centers and ATO/RMF sustainment.
 * Industry certification relevant to Windows Server, VMware, or enterprise infrastructure.

## Description

* Lead administration and sustainment of enterprise Windows server, identity, virtualization, and data center services.
 * Engineer and troubleshoot complex VMware/ESX virtual infrastructures, resource utilization, failover, and availability.
 * Administer Active Directory organizational units, account rights, DNS, TCP/IP, and directory-dependent services.
 * Lead secure patching and remediation against DISA STIGs, vulnerabilities, and change-control baselines.
 * Oversee storage/backup services and data recovery for critical hosted workloads.
 * Analyze performance and major incidents across unclassified and classified systems within authorized facilities.
 * Prepare architecture diagrams, configuration records, troubleshooting procedures, and RMF technical evidence.
 * Coordinate service changes and restoration with Government network, security, and customer teams.
 * Plan and validate major changes to enterprise server, storage, and virtualization infrastructure.
 * Troubleshoot cross-platform service failures using monitoring, logs, capacity analysis, and root-cause techniques.
 * Improve disaster recovery readiness, technical operating procedures, and secure configuration consistency., This position is 100% on-site at a U.S. Army facility at Fort Belvoir, Virginia. Daytime work within assigned coverage schedules, with after-hours response for critical hosted services, data center incidents, or service restoration when required.