Linux System Administrator – AWS Cloud (C2S)

CACI International•Chantilly, VA

22h

About The Position

CACI is seeking a highly skilled Linux System Administrator to join our team in supporting a Government infrastructure by architecting and maintaining secure Linux-based systems in AWS Commercial Cloud Services (C2S) environment. You'll work on business-essential enterprise applications while advancing your cloud and automation skills.

Requirements

TS/SCI with CI Polygraph
Security+ Certification (IAT level 2 or higher)
Technical Skills 3+ years Linux system administration (Red Hat, CentOS, Ubuntu, or Amazon Linux)
Hands-on AWS experience, specifically in C2S environments
Experience with Microsoft ecosystem: Active Directory, Windows Server, IIS, SQL Server
MySQL database administration
Strong organizational skills with ability to prioritize competing demands independently

Nice To Haves

Certifications AWS Certified Solutions Architect – Associate
AWS Certified SysOps Administrator
Red Hat Certified System Administrator (RHCSA)
Advanced Technical Skills AWS services: Auto Scaling, ELB, CloudWatch, Lambda, ECS, EC2, VPC, S3, IAM
Scripting proficiency: Python, Bash, PowerShell, JSON
Configuration management tools: Ansible, Terraform, CloudFormation
Containerization: Docker, Kubernetes, ECS
CI/CD pipelines: Jenkins, GitLab CI, Team Foundation Server
Version control: Git
Security & Compliance ICD 503 framework familiarity
Experience with STIG implementation and security scanning tools

Responsibilities

Cloud Infrastructure & Automation Design, deploy, and maintain Linux servers (Amazon Linux 2, Amazon Linux 2023) in AWS C2S environments
Build automation scripts (Bash, Python, PowerShell) to streamline provisioning, configuration management, and system maintenance
Implement Infrastructure as Code practices for repeatable, scalable deployments
System Operations & Reliability Ensure high availability and performance of production applications through proactive monitoring (CloudWatch) and system health metrics
Execute application and database migrations with minimal downtime
Deploy security patches (IAVA), updates, and maintain compliance with security baselines
Security & Compliance Collaborate with Information System Security Engineers (ISSE) to maintain security accreditation under ICD 503
Document security controls, create system security plans, and support Authority to Operate (ATO) processes
Maintain configuration management aligned with contract and customer requirements
Technical Documentation & Collaboration Create clear technical documentation: architecture diagrams, SOPs, runbooks, and system documentation
Troubleshoot complex issues across hardware, software, networking, and cloud services
Support development, testing, and production environments including web servers, databases (MySQL, SQL Server), and DevOps tools
Team Environment Work within a productive and collaborative team environment with well-defined objectives, clear communication and mutual respect.