
Senior Systems Administrator – Windows/Linux, Top Secret Clearance w/SCI eligibility
AMERICAN SYSTEMS
full-time
Posted on:
Location Type: Office
Location: Arlington • Virginia • United States
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Salary
💰 $108,100 - $180,600 per year
Job Level
About the role
- 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.
Requirements
- Active TOP SECRET clearance with SCI eligibility required
- 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
- comprehensive benefits package
- healthcare benefits
- paid leave
- retirement plans
- insurance programs
- education and training assistance
- $5,000 sign-on bonus
Applicant Tracking System Keywords
Tip: use these terms in your resume and cover letter to boost ATS matches.
Hard Skills & Tools
Windows administrationLinux administrationvSpherePowerShell scriptingsystem performance optimizationsystem resource analysisMS Exchange managementcloud platform designcontainerizationvirtualization
Soft Skills
problem resolutioncommunicationcollaborationproject management
Certifications
TOP SECRET clearanceBachelor's degree in STEMDoD 8140 IAT Level II certSecurity+ CE