Linux Systems Engineer (TS/SCI) – Kubernetes & Automation

CACI International Inc; Sterling (VA); On-site; USD 104,000 - 218,000; Full time

Job summary

CACI International Inc is seeking a Linux Systems Engineer to design, build, maintain, and secure Linux-based systems across secure environments, ensuring reliability and performance. You will install and configure Linux OS, monitor systems, develop automation scripts, patch and harden, implement backup and disaster recovery, and collaborate with network teams to achieve high availability.

Requires a TS/SCI with polygraph clearance, 7+ years of related experience, and CCNA; travel up to 10%

Qualifications

• Bachelor’s degree or equivalent with 7+ years experience.
• Must have a current TS/SCI security clearance with polygraph.
• CCNA

Responsibilities

• Install, configure, and maintain Linux OS and servers.
• Monitor performance, reliability, and security; respond to alerts.
• Troubleshoot Linux, network, and application issues.
• Develop automation scripts (Bash, Python).
• Apply updates and patching; harden security.
• Implement backup and disaster recovery procedures.
• Collaborate with network and infra teams for high availability.
• Maintain system documentation and runbooks.
• Provide guidance to users and admins on Linux.
• Manage services (DNS, DHCP, LDAP, NTP) within Linux.
• Architect scalable Linux infra across on‑prem, virtual, and cloud.
• Deploy Docker and Kubernetes for containerization.
• Conduct vulnerability scans and security audits.

Skills

Linux administration

Scripting (Bash/Python)

Automation tools (Ansible)

Networking basics

Cloud platforms (AWS/Azure/GCP)

Security hardening

Problem solving

Education

Bachelor’s degree or equivalent

Tools

Ansible

Puppet

Chef

Docker

Kubernetes

Job description

CACI International Inc is seeking a Linux Systems Engineer to design, build, maintain, and secure Linux-based systems across secure environments, ensuring reliability and performance. You will install and configure Linux OS, monitor systems, develop automation scripts, patch and harden, implement backup and disaster recovery, and collaborate with network teams to achieve high availability.

Requires a TS/SCI with polygraph clearance, 7+ years of related experience, and CCNA; travel up to 10%