Systems Administrator with Security Clearance

TEKsystems c/o Allegis Group

Scott Air Force Base, IL

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JOB DETAILS

SKILLS

Amazon Elastic Compute Cloud (EC2), Amazon Simple Storage Service (S3), Amazon Web Services (AWS), Bash Scripting, Communication Skills, Continuous Deployment/Delivery, Continuous Integration, Defense Information Systems Agency (DISA), DoD Secret Clearance, Documentation, ESRI, Geographic Information Systems (GIS), Identify Issues, Incident Response, Internet Security, Maintain Compliance, Microsoft Windows Server, Microsoft Windows System Administration, Python Programming/Scripting Language, Root Cause Analysis, Scripting (Scripting Languages), Security Clearance, Security Information and Event Management (SIEM), Sensitive Compartmented Information (SCI), Server Support, Software Patches, Splunk, Standard Operating Procedures (SOP), Systems Administration/Management, Systems Maintenance, Top Secret Clearance, U.S. National Institute of Standards and Technology (NIST), United States Department of Defense (DoD), Windows PowerShell

LOCATION

Scott Air Force Base, IL

POSTED

3 days ago

Overview
We are seeking a mission-focused Systems Administrator with strong Windows Server and AWS GovCloud (US) experience to support classified Department of Defense environments. This role is ideal for a cleared professional who thrives in secure, compliance-driven infrastructures and enjoys hands-on operational ownership. Responsibilities Administer and maintain AWS GovCloud (US) environments supporting classified workloads (IL4/IL5/IL6)
Manage and support Windows Server–based systems in classified environments
Ensure compliance with RMF, DISA STIGs, NIST 800‑53, and FedRAMP High
Configure and manage AWS services including EC2, IAM, S3, RDS, VPC, CloudWatch, CloudTrail, and KMS
Implement and enforce Zero Trust Architecture (ZTA) and strong IAM practices
Perform system patching, backups, vulnerability remediation, and compliance scanning using ACAS, SCAP, and other approved tools
Support ATO packages, POA&Ms, and continuous monitoring efforts
Implement centralized logging, monitoring, and alerting; integrate with SIEM tools such as Splunk or ELK
Provide Tier 3 support, conduct root cause analysis, and assist with incident response
Create and maintain system documentation, diagrams, and SOPs Required Qualifications Active DoD Secret Clearance (TS/SCI preferred)
IAT Level II or III certification (Security+ CE, CASP+, CISSP, or equivalent)
3+ years of hands-on Systems Administration experience
Strong experience with Windows Server administration
Working knowledge of AWS GovCloud (US) services
Experience operating in classified or highly regulated environments
Familiarity with DoD cybersecurity frameworks (RMF, STIGs, NIST)
Scripting or automation experience (PowerShell, Bash, Python, Terraform, or CloudFormation)
Strong troubleshooting, documentation, and communication skills Preferred Qualifications Experience supporting IL5 or IL6 classified workloads
Familiarity with AWS Organizations and Service Control Policies (SCPs)
Exposure to DevSecOps, CI/CD pipelines, or container platforms (ECS/EKS)
Experience working with DISA assessments or CCRI events
GIS / Geospatial / ESRI experience is a strong plus Work Environment Onsite only
Secure, classified setting
Mission-critical infrastructure responsibilities

About the Company

TEKsystems c/o Allegis Group

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