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# Linux System Administrator with Security Clearance

- **Company:** Mission Services LLC
- **Location:** Winchester, VA, United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Amazon Web Services, Amazon Elastic Compute Cloud, User Authentication, Bash Shell, System Configuration, Linux, Python (Programming Language), Network Troubleshooting, Red Hat Enterprise Linux, Systems Integration, Scripting, Cloud Platform System, Autoscaling, System Availability, Atlassian Tools, Performance Monitor, Vulnerability Analysis, User Accounts
- **Published:** October 27, 2026
- **Apply:** https://www.adzuna.com/details/5740502786

## About the Role

Required:
5+ years of RHEL/Linux system administration experience in enterprise or secure settings
Hands-on experience with AWS services (EC2, ELB, Auto Scaling, etc.)
Strong scripting skills (e.g., Bash, Python) for automation tasks
Experience applying system hardening and security best practices
Ability to troubleshoot system and network issues across Linux and cloud environments.
Top Secret clearance.(SCI eligibility and willing to get CI poly)

## Description

Position Overview Provide administration, support, and operational excellence for Red Hat Enterprise Linux (RHEL) systems within a secure, mission-critical environment. Assist in integrating and managing hybrid infrastructure leveraging AWS cloud services. Key Responsibilities
Install, configure, patch, and maintain Red Hat Enterprise Linux (RHEL) systems in both virtualized and physical environments
Manage AWS components such as EC2, ELB, Auto Scaling, and other relevant services.
Automate system tasks using Bash, Python, or similar scripting languages
Implement security hardening, including system configuration baselines, vulnerability scanning, and mitigation - in compliance with federal mandates (STIGs, NIST)
Proactively monitor performance and availability; troubleshoot and resolve system, network, and AWS integration issues
Manage user accounts, access controls, and authentication services
Maintain detailed documentation in tools such as Jira and Confluence
Participate in on-call rotations to ensure high availability and rapid incident response