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# Linux Systems Engineer

- **Company:** CACI International Inc.
- **Location:** Sterling, VA, United States
- **Experience:** Expert
- **Salary:** $103,800.0 - $218,100.0
- **Contract:** Permanent contract
- **Skills:** Amazon Web Services, Application Performance Management, Microsoft Azure, Bash Shell, Cloud Computing, System Configuration, Dynamic Host Configuration Protocol, Linux, File Systems, Domain Name System (DNS), Perl (Programming Language), Monitoring of Systems, Python (Programming Language), Lightweight Directory Access Protocols (LDAP), Linux System Administration, Linux Servers, Routing, Network Time Protocols, Network Protocols, Performance Tuning, Ansible, Security Information and Event Management, Systems Architecture, Software Vulnerability Management, Scripting, Computer Networking Systems, Google Cloud, Cloud Platform System, System Availability, Firewalls (Computer Science), Containerization, Selinux, Infrastructure Automation Frameworks, Information Technology, Puppet, Vulnerability Analysis
- **Published:** October 16, 2026
- **Apply:** https://www.juju.com/job/1_caciinternational-1443152671743

## About the Role

scalable, highly available Linux infrastructures across physical, virtual, and cloud environments Deploy and manage containerization and orchestration solutions such as Docker and Kubernetes Conduct vulnerability scanning, security audits, and enforce access controls using SELinux or similar tools Perform root-cause analysis for complex issues involving networking, storage, or application performance Basic Cisco networking management Qualifications Typically requires bachelor's degree or equivalent, and at least 7 years of related experience.
Must have a current TS/SCI security clearance with polygraph CCNA Desired Core Technical Qualifications Strong understanding of Linux operating systems, distributions, file systems, kernel concepts, and system architecture Proficiency in Linux system administration, including installation, configuration, maintenance, performance tuning, and troubleshooting Ability to design, configure, and test Linux servers and operating systems Advanced scripting skills (Bash, Python, Perl) for automation and system efficiency Experience with configuration management tools such as Ansible, Puppet, Chef, or similar platforms Solid knowledge of networking protocols, services, and security hardening (DNS, DHCP, firewalls, routing, etc.) Familiarity with cloud platforms (AWS, Azure, GCP) and hybrid infrastructure environments Ability to monitor and maintain system health, performance, and security events across Linux environments Security & Compliance Qualifications Implementing security measures, patching,
vulnerability remediation, and systems hardening.
Experience working within compliance frameworks and audit-ready environments. - **What You Can Expect:** **A culture of integrity.** At CACI, we place character and innovation at the center of everything we do.

## Description

Job Title: Linux Systems Engineer Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: TS/SCI with Polygraph Employee Type: Regular Percentage of Travel Required: Up to 10% Type of Travel: Local * * * The Opportunity The Linux Systems Engineer will function as part of a team of engineers responsible for designing, building, maintaining, and securing Linux-based systems to ensure reliability, performance, and security across in our secure environments.
Responsibilities Install, configure, and maintain Linux operating systems and servers Monitor system performance, reliability, and security; respond to alerts proactively Troubleshoot system, application, hardware, and network-related issues on Linux platforms Develop and maintain automation scripts using Bash, Python, or similar languages to streamline tasks Perform regular updates, patching, and system hardening to maintain security posture Implement backup, recovery, and disaster-recovery procedures for Linux environments Collaborate with network engineers and other infrastructure teams to ensure seamless integration and high availability of systems Maintain documentation related to system configurations, troubleshooting processes, and operational procedures Support users and administrators by providing technical guidance and resolving Linux-related issues Manage critical infrastructure services (e.g., DNS, DHCP, LDAP, NTP, mail relays) within Linux environment Architect and maintain