Linux System Administrator - AWS Cloud (C2S)

CACI International • Chantilly, VA

5d

About The Position

Join our team supporting critical Government infrastructure by architecting and maintaining secure Linux-based systems in AWS Commercial Cloud Services (C2S) environment. You'll work on enterprise applications serving mission-critical operations while advancing your cloud and automation skills.

Requirements

• Active TS/SCI security clearance with CI polygraph
• CompTIA Security+ (or IAT Level II equivalent)
• 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

• AWS Certified Solutions Architect – Associate
• AWS Certified SysOps Administrator
• Red Hat Certified System Administrator (RHCSA)
• 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
• ICD 503 framework familiarity
• Experience with STIG implementation and security scanning tools

Responsibilities

• 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
• 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
• 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
• 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

Benefits

• Our employees value the flexibility at CACI that allows them to balance quality work and their personal lives.
• We offer competitive compensation, benefits and learning and development opportunities.
• Our broad and competitive mix of benefits options is designed to support and protect employees and their families.
• At CACI, you will receive comprehensive benefits such as; healthcare, wellness, financial, retirement, family support, continuing education, and time off benefits.

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level
• Education Level: No Education Listed
• Number of Employees: 5,001-10,000 employees