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Linux System Administrator - AWS Cloud (C2S)

CACI International • Chantilly, VA • 1d ago

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 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

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.

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.

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