AMERICAN SYSTEMS

Senior Systems Administrator – Windows/Linux, Top Secret Clearance w/SCI eligibility

AMERICAN SYSTEMS

full-time

Posted on:

Location Type: Office

Location: ArlingtonVirginiaUnited 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