Job Title: Linux System Administrator – AWS Cloud (C2S)

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: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.

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.

Required qualifications:

• 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

Work Schedule

• Core hours: 7:00 AM – 3:00 PM

Desired qualifications:

Certifications

• AWS Certified Solutions Architect – Associate
• AWS Certified Sys Ops 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

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What You Can Expect:

A culture of integrity.

At CACI, we place character and innovation at the center of everything we do. As a valued team member, you’ll be part of a high-performing group dedicated to our customer’s missions and driven by a higher purpose – to ensure the safety of our nation.

An environment of trust.

CACI values the unique contributions that every employee brings to our company and our customers - every day. You’ll have the autonomy to take the time you need through a unique flexible time off benefit and have access to robust learning resources to make your ambitions a reality.

A focus on continuous growth.

Together, we will advance our nation's most critical missions, build on our lengthy track record of business success, and find opportunities to break new ground — in your career and in our legacy.

Your potential is limitless. So is ours.

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Pay Range: There are a host of factors that can influence final salary including, but not limited to, geographic location, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, education, and certifications. 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.

The proposed salary range for this position is:

$103,800 - $218,100

CACI is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, age, national origin, disability, status as a protected veteran, or any other protected characteristic.