
Infrastructure/System Administrator
Sterling, VAFull-time$73–149K/yrSeen todaySeen in employer's feed today
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At a glance
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Requirements
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Job overview
CACI seeks an Infrastructure/System Administrator in Sterling, Virginia, to support cloud and on-premises infrastructure for software development. The role includes designing and maintaining secure, automated environments, integrating systems across their life cycle, and supporting operating systems and infrastructure tools. Candidates need an active TS/SCI clearance, a bachelor’s degree or equivalent experience, at least three years of relevant experience, Linux administration proficiency, and scripting and coding skills.
Skills & qualifications
Skills
Qualifications
Benefits
Full job description
Job Title: Infrastructure/System Administrator
Job Category: Information Technology
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:
Are you ready to shape the future of intelligence systems? CACI is seeking a talented Infrastructure/System Administrator to join our team in Sterling, VA. In this role, you'll design cutting-edge system architectures for new and existing computer systems, coordinating all aspects of development including design, modeling, security, integration, and testing. Your expertise will be crucial in achieving project milestones and developing innovative solutions to complex engineering challenges. Join us at CACI and be part of a team that's pushing the boundaries of technology in support of our nation's intelligence capabilities.
Responsibilities:
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Support designing, securing, and maintaining the cloud and hybrid/cloud computing environments that power our software development lifecycle.
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Act as a critical bridge between system operations and development teams, managing a robust infrastructure that spans AWS cloud services and on-premises data centers.
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Help build highly available, scalable, and automated environments, ensuring developers have the secure access, CI/CD tools, and computing resources they need to build, test, and deploy code efficiently.
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Implement systems design, development, and integration throughout the entire system life cycle.
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Support moderately complex infrastructure, including installing, configuring, testing, and maintaining operating systems, application software, and system management tools.
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Implement and maintain robust security measures, including backup and redundancy strategies.
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Prepare documentation for processes and procedures related to engineering projects.
Qualifications:
Required:
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Active TS/SCI security clearance (Willing and able to obtain a polygraph)
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Bachelor’s degree in information technology, a relevant field or equivalent experience
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Minimum of 3 years' experience as an IT system administrator, or related experience.
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Demonstrated proficiency as a Linux system administrator.
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Strong scripting and coding skills, particularly in Python, or similar languages.
Desired:
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Expertise in operational support and system maintenance.
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Knowledge in Kubernetes container orchestration and Ansible automation.
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Experience with automation and virtualization technologies (e.g., VMware, virtual networking)
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:
$72,700 - $149,200
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.
How this job compares
Set against the 913 open System Administrator jobs on Olive Jobs, counted October 28, 2026.
- Pay
- This posting$73–149K/yr
- Virginia median$92–149K/yr61 salary ranges
- US median$88–132K/yr620 salary ranges
This range's midpoint, $111K, is 9% below the Virginia median midpoint ($122K) — in the middle half of System Administrator salary ranges in Virginia.
- Openings
- Olive Jobs lists 73 open System Administrator jobs in Virginia and 913 across the US. 3% of them nationwide are listed as remote or flexible.
- Hiring the most in Virginia
- Leidos10 open
- ASM Research, An Accenture Federal Services Company6 open
- Nightwing5 open
- Experience
- This posting asks for at least 3 years of experience; System Administrator postings that state a minimum ask for 4 years at the median (713 postings).
- Education
- 395 of the 913 open System Administrator jobs (43%) ask for a bachelor's degree or higher.
Counted across the open, public US postings on Olive Jobs on October 28, 2026. Pay medians are the middle values of the low ends and of the high ends of postings that list both ends of a range in the same cadence (a yearly salary or an hourly rate); a range's midpoint is halfway between its ends. Pay and experience figures resting on fewer than 20 postings are left out.
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