AMERICAN SYSTEMS · 3 days ago
Senior Systems Administrator (Windows/Linux) - Top Secret Clearance w/SCI eligibility required
US-VA-Arlington
Full-time
Onsite
Senior Level, Lead/Staff
$108K/yr - $181K/yr
8+ years expAMERICAN SYSTEMS is an employee-owned federal government contractor delivering trusted solutions in support of the nation’s highest priorities. They are seeking a Senior Systems Administrator to support a Special Access Program, focusing on optimizing enterprise Windows and Linux infrastructure across multiple datacenters and providing Tier III support for mission-critical systems.
GovernmentInformation Technology
No H1B
Security Clearance RequiredU.S. Citizen Only
Responsibilities
Support on-premises Windows (80%) and Linux (20%) infrastructure and applications
Support on-premises vSphere infrastructure across multiple datacenters
Provide Tier III support for production and development environments, managing ticket submission and tracking
Monitor resource availability to meet customer requirements, ensuring sufficient hardware, software, and throughput
Review and optimize system performance to ensure peak efficiency and reliability for mission-critical applications
Analyze system resource usage and apply corrective actions when necessary
Review system and application logs, ensuring completion of scheduled tasks and backups
Create and manage user accounts, groups, and permissions; maintain local repositories
Manage MS Exchange systems and troubleshoot any related issues
Develop and maintain administrative PowerShell scripts for system maintenance and automation
Document and implement system administration solutions to meet business requirements
Provide project status updates, problem resolution, and system administration reports to management
Coordinate problem resolution with customers, team members, and vendors as needed
Assess and recommend improvements for system software and hardware to enhance efficiency and functionality
Collaborate with the Cybersecurity team to implement, monitor, and maintain cybersecurity compliance and vulnerability mitigations
Qualification
Required
Active TOP SECRET clearance with SCI eligibility required; Program Access Request (PAR) submission required after hire
Bachelor's degree in a STEM discipline (additional years of relevant experience considered in lieu of degree)
8-10 years of IT Systems Administration that includes 3-5 years of Linux administration
DoD 8140 IAT Level II cert (e.g., Security+ CE or equivalent)
Experience designing and maintaining secure, scalable cloud/on-prem platforms (IL5–IL6+)
Knowledge of STIGs, RMF, and DoD cybersecurity standards
Knowledge of containerization (Kubernetes/Docker/Podman), Ansible for automation, and OpenLDAP
Experience with virtualization (VMware) and EMC SAN technology
PowerShell scripting skills
Benefits
Healthcare benefits
Paid leave
Retirement plans
Insurance programs
Education and training assistance
Company
AMERICAN SYSTEMS
AMERICAN SYSTEMS is one of the largest employee-owned companies in the US.
1001-5000 employees
Funding
Current Stage
Late StageLeadership Team
John Steckel
President & CEO
Peter Whitfield
Chief Financial Officer
Recent News
Washington Technology
2025-12-20
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2025-12-19
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2025-12-09
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