Cloud Infrastructure Systems Administrator

CACI International Inc; Illinois; Remote; USD 75,000 - 158,000; Full time

Job summary

CAC I International Inc. is seeking a Cloud Infrastructure Systems Administrator to build, operate, and secure AWS-based infrastructure in a SAFe Agile environment for mission-critical needs.

The role involves cross-team collaboration and quarterly travel to Scott Air Force Base, ensuring high availability, security, and scalable cloud solutions. The position emphasizes patching, STIG compliance, IaC (Terraform, Docker, Ansible), and hands-on administration across Windows and Linux.

Qualifications

• Active DoD Secret clearance is required.
• 5 years of related technical experience.
• Bachelor’s degree or equivalent work experience.

Responsibilities

• Build and manage AWS infrastructure across multi-account landing zones.
• Install, configure, deploy, and maintain servers, software, and supporting platforms.
• Monitor system performance, troubleshoot issues, and ensure reliable day-to-day operations.
• Strengthen infrastructure security by managing access controls, backups, firewalls, and compliance tasks.
• Collaborate within a SAFe Agile delivery model with application, data, and security teams.
• Support IaaS, IaC, networks, and firewalls for secure, scalable environments.
• Perform upgrades, IAVA patching, and ensure STIG compliance.
• Maintain systems per contract requirements and monitor availability.
• Investigate and resolve outages and technical issues.
• Develop and maintain internal technical documentation and policies.
• Contribute to multi-region disaster recovery planning and backup automation.

Skills

System Administration

AWS Cloud

Kubernetes/EKS

Windows & Linux

Patch management

Active Directory / IAM

Education

Bachelor’s degree

Tools

Security+

AWS

Terraform

Docker

Ansible

Git

Job description

Job Title: Cloud Infrastructure Systems Administrator

Job Category: Information Technology

Time Type: Full time

Minimum Clearance Required to Start: Secret

Employee Type: Regular

Percentage of Travel Required: Up to 10%

Type of Travel: Local

* * *

The Opportunity:

Join a dynamic, fast-paced Agile development program where you will play a critical role in building, operating, and enhancing systems within a secure AWS cloud environment. As a key Platform team member, you’ll help ensure our servers, applications, and infrastructure stay highly available, resilient, and optimized for daily mission needs.

This role offers continuous challenge and growth—our diverse systems and evolving cloud landscape will give you opportunities to deepen your technical expertise, influence architectural decisions, and innovate alongside application, data, and security teams. If you enjoy solving complex problems, designing scalable cloud solutions, and working collaboratively in a SAFe environment, this is the place for you.

Remote but required to travel to Scott Airforce base on a quarterly basis!

Responsibilities:

• Build and manage AWS infrastructure across multi-account, multi-environment landing zones, including systems management and solution design.
• Install, configure, deploy, and maintain servers, software, and supporting platforms.
• Monitor system performance, troubleshoot issues, and ensure reliable day-to-day operations.
• Strengthen infrastructure security by managing access controls, backups, firewalls, and compliance tasks.
• Collaborate within a SAFe Agile delivery model alongside application, data, and security teams.
• Support IaaS, IaC, networks, and firewalls to maintain secure and scalable environments.
• Perform upgrades, IAVA patching, and ensure STIG compliance.
• Maintain systems per contract requirements, performing proactive performance and availability monitoring.
• Investigate and resolve system outages and technical issues.
• Manage cloud resources in AWS to support program needs and evolving mission requirements.
• Develop and maintain internal technical documentation, system manuals, and IT policies.
• Contribute to multi‑region disaster recovery planning, backup automation, failover design, and resilience engineering.

Qualifications:

• An active DoD Secret clearance.
• 5 years of related technical experience.
• Bachelor’s degree.
• Security+, AWS, or similar IT certification.
• Proven experience as a System Administrator, Network Administrator, or similar technical role.
• Strong verbal and written communication skills with the ability to collaborate across teams and leadership levels.
• Hands-on experience with servers, networks (LAN/WAN), cloud environments, and patch management.
• Ability to understand, document, and distill technical solution requirements.
• Ability to work independently with minimal supervision.
• Expertise with Windows and Linux operating systems.
• Production Kubernetes/EKS experience, including Docker/containerized workloads and image building.
• Active Directory and identity federation integration experience.

Desired:

• Familiarity with Git, Jenkins CI/CD, Terraform, Docker, and automation pipelines.
• Experience with STIG compliance and security patching.
• Working knowledge of AWS-hosted environments and cloud-native services.
• Scripting experience (Shell, Perl, PowerShell) and comfort with automation tooling.
• Strong Terraform experience (modules, state management, reusable IaC) and Ansible knowledge.
• Exposure to observability/logging platforms such as Splunk or CloudWatch.

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.

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.

Since this position can be worked in more than one location, the range shown is the national average for the position.

The proposed salary range for this position is:

$75,200-$158,100

CACI is anEqualOpportunity 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 otherprotectedcharacteristic.