Systems Administrator, Senior- Red Hat Linux & Windows (Top Secret w/SCI eligibility)

americansystems· IT / Cyber Security / Network Systems
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📍 Washington, DC, USFULL TIME💰 USD 150K–175K/yr

About this role

Overview

AMERICAN SYSTEMS, a 100% employee-owned federal contracting company, is seeking a Senior Systems Administrator with strong Red Hat Linux CLI and Windows administration experience to support a Special Access Program in Washington, DC.

 

This role focuses on owning and optimizing enterprise Linux & Windows infrastructure across multiple datacenters, partnering with cybersecurity and engineering teams, and providing Tier III support for systems that cannot fail.

 

Role includes a $5,000 sign-on bonus in addition to a generous compensation package!

Responsibilities

As a Sr. Systems Administrator, you will:

  • Support on-premises Linux (80%) and Windows (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 in a RHEL-based environment
  • Support on-prem and remote Linux-based Oracle database appliances
  • Develop and maintain administrative bash scripts for system maintenance and automation
  • Proficient in DNS administration
  • Document and implement system administration solutions to meet business requirements

Qualifications

  • Active TOP SECRET clearance with SCI eligibility required; Program Access Request (PAR) submission required after hire
  • Bachelor’s degree in a STEM discipline (or additional years of relevant experience considered in lieu of degree)
  • 8-10 years of IT Systems Administration that includes 3-5 years of Linux CLI 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 DoW cybersecurity standards
  • Knowledge of containerization (Docker/Podman), Ansible for automation, and OpenLDAP
  • Experience with virtualization (VMware)  
  • Strong CLI and Bash scripting experience

NOTE: U.S. Citizenship Required for the purposes of obtaining/holding a U.S. security clearance

Pay Transparency Statement

AMERICAN SYSTEMS is committed to pay transparency for our applicants and employee-owners. The salary range for this position is USD $150,000.00/Yr. - USD $175,000/Yr. Actual compensation will be determined based on several factors permitted by law. AMERICAN SYSTEMS provides for the welfare of its employees and their dependents through a comprehensive benefits program by offering healthcare benefits, paid leave, retirement plans, insurance programs, and education and training assistance.

EEO Statement

EEO Race/Sex/Disability Status/Veteran Status

Frequently Asked Questions

What is the salary for the Systems Administrator, Senior- Red Hat Linux & Windows (Top Secret w/SCI eligibility) role at americansystems?
The listed salary for this Systems Administrator, Senior- Red Hat Linux & Windows (Top Secret w/SCI eligibility) position at americansystems is USD 150K–175K/yr. This is an FULL TIME role.
Where is the Systems Administrator, Senior- Red Hat Linux & Windows (Top Secret w/SCI eligibility) position at americansystems located?
This Systems Administrator, Senior- Red Hat Linux & Windows (Top Secret w/SCI eligibility) role at americansystems is based in Washington, DC, US. The position is listed as on-site or hybrid. Check the full job description or apply directly to confirm the work arrangement.
Is the Systems Administrator, Senior- Red Hat Linux & Windows (Top Secret w/SCI eligibility) role at americansystems full-time or part-time?
This is listed as a FULL TIME position. It is posted as a Systems Administrator, Senior- Red Hat Linux & Windows (Top Secret w/SCI eligibility) role in the IT / Cyber Security / Network Systems department at americansystems.
Which team or department does the Systems Administrator, Senior- Red Hat Linux & Windows (Top Secret w/SCI eligibility) at americansystems belong to?
This Systems Administrator, Senior- Red Hat Linux & Windows (Top Secret w/SCI eligibility) position is part of the IT / Cyber Security / Network Systems department at americansystems. See the full job description for more information about the team structure and responsibilities.
How do I apply for the Systems Administrator, Senior- Red Hat Linux & Windows (Top Secret w/SCI eligibility) position at americansystems?
Click the "Apply Now" button on this page. You will be redirected to americansystems's official application portal hosted on icims where you can submit your application directly.
When was the Systems Administrator, Senior- Red Hat Linux & Windows (Top Secret w/SCI eligibility) job at americansystems posted?
This Systems Administrator, Senior- Red Hat Linux & Windows (Top Secret w/SCI eligibility) position at americansystems was posted on Oct 9, 2026. Apply as soon as possible — early applications are often reviewed first.
Systems Administrator, Senior- Red Hat Linux & Windows (Top Secret w/SCI eligibility)
americansystems · 💰 USD 150K–175K/yr
Apply for this role ↗

You'll be redirected to americansystems's official application page on icims.