Systems Administrator; AWS, Windows, Linux Security Clearance
Job in
O Fallon, O'Fallon, St. Clair County, Illinois, 62269, USA
Listed on 2026-02-27
Listing for:
CACI
Full Time
position Listed on 2026-02-27
Job specializations:
-
IT/Tech
Cybersecurity, Systems Engineer, IT Support, Systems Administrator
Job Description & How to Apply Below
Location: O Fallon
Job Title:
Systems Administrator (AWS, Windows, Linux) 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:
Continental US *
* * Join a fast-paced Agile development program as a key admin/Dev Ops resource! You will be part of a team responsible for keeping the multiple development servers and applications highly available for the daily use. Plan and execute daily tasks along with long term upgrades and migrations. With the diverse systems and applications employed in our program you'll continually be challenged and have the opportunity to grow in your field.
The Opportunity:
• AWS systems management and solution design.
• Installing, configuring, and maintaining servers and software.
• Monitoring system performance and troubleshooting issues.
• Ensuring security and efficiency of IT infrastructure. Responsibilities:
• Assist with Dev Ops and Release Pipelines.
• Perform upgrades, IAVA patching, and STIG compliance.
• Monitor production performance and maintain systems according to contract requirements.
• Troubleshoot system issues and outages.
• Manage resources in an AWS cloud.
• Ensure security through access controls, backups and firewalls.
• Build & maintain internal technical documentation, manuals, and IT policies.
Qualifications:
Required:
• 3 years of experience in related field.
• Bachelor's Degree or equivalent experience.
• Secret Clearance.
• Security+ Certification.
• Proven experience as a System Administrator, Network Administrator or similar role.
• Communicate (verbal and written) effectively with teams, peers, and management.
• Experience with databases, networks (LAN, WAN) and patch management.
• Experience with and ability to understand, distill, and document solution requirement.
• Ability to work with minimal supervision.
• Expertise with operating systems and platforms to include Windows and Linux. Desired:
• Familiarity with products like GIT, Jenkins CI/CD, Terraform, Docker.
• Experience with STIG compliance and security patching.
• Knowledge of AWS hosted environments and services.
• Knowledge of server scripting (Shell/Perl/Power Shell) and automation technologies.
- 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. The proposed salary range for this position is: $63,300-$129,700 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.
To View & Apply for jobs on this site that accept applications from your location or country, tap the button below to make a Search.
(If this job is in fact in your jurisdiction, then you may be using a Proxy or VPN to access this site, and to progress further, you should change your connectivity to another mobile device or PC).
(If this job is in fact in your jurisdiction, then you may be using a Proxy or VPN to access this site, and to progress further, you should change your connectivity to another mobile device or PC).
Search for further Jobs Here:
×