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AWS System Administrator

CACI

Company : CACI

Location : St Louis, MO, 63103

Posted Date : 14 October 2025

Job Type : Full Time

Category : IT Operations & Helpdesk

Occupation : System Administrator

Job Details

AWS System Administrator

Job Category: Engineering

Time Type: Full time

Minimum Clearance Required to Start: TS/SCI

Employee Type: Regular

Percentage of Travel Required: Up to 10%

Type of Travel: Local

The Opportunity:

The TCS team is looking for an AWS System Administrator to work on Enterprise Cross-Domain Systems and associated projects. These systems provide reliable data transfers between domains for general users and programs. In this role, you will be responsible for the day-to-day administration and maintenance of our AWS infrastructure. You will ensure the availability, performance, and security of our cloud-based systems and applications.

Responsibilities:

  • Manage AWS resources: Provision, configure, and manage AWS resources such as EC2 instances, EBS volumes, VPCs, security groups, and IAM roles.

  • Monitor system performance: Monitor system performance metrics, identify and troubleshoot issues, and implement corrective actions.

  • Maintain system security: Implement and enforce security best practices, including access control, data encryption, and vulnerability management.

  • Automate tasks: Automate routine administrative tasks using scripting languages (e.g., Python, Bash) and AWS tools (e.g., AWS CLI, CloudFormation).

  • Troubleshoot and resolve issues: Diagnose and resolve technical issues related to AWS infrastructure and applications.

  • Implement and maintain backups: Implement and maintain backup and recovery procedures for AWS resources.

  • Stay current with AWS technologies: Keep abreast of the latest AWS services, features, and best practices.

  • Collaborate with teams: Work closely with development, operations, and security teams to ensure smooth and efficient operations.

Qualifications:

Required:

  • 3+ years of relevant experience

  • Bachelor's Degree in a Technical field (i.e. Information Technology, Information Systems, Computer Science) or equivalent experience in lieu of degree

  • DoD / DoD -M.IAT Level II Certification to start

  • Active TS Clearance (must obtain a Poly within 6 months of start date)

Preferred:

  • Active TS SCI with Poly

  • Experience writing and updating python scripts

________________________________________________________________________________________

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.

Learn more about CACI here. (

________________________________________________________________________________________

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. Learn more here ( .

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:

$82,100-$172,400

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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