Infrastructure/Systems Administrator

CACI; Sterling (VA); On-site; USD 105,000 - 231,000; Full time

Job summary

CACI is hiring an Infrastructure/Systems Administrator to maintain and enhance our IT infrastructure across corporate and customer environments. The role emphasizes systems administration, security patching, and cross-functional collaboration to support mission-critical applications.

Ideal candidates have a TS/SCI with poly clearance, a related bachelor’s degree or equivalent, and 10+ years in Linux environments with experience in corporate settings. Occasional off-hours work is required.

Qualifications

• Active TS/SCI with polygraph.
• weighting notes not applicable

Responsibilities

• Resolve IT hardware and software infrastructure issues (servers, network, security, etc.) using advanced systems analysis techniques.
• Analyze, troubleshoot, and resolve issues with IT infrastructure, including user systems, servers, storage, and network connectivity.
• Provide system administration for assigned infrastructure and ensure robust security measures are in place.
• Apply security patches and operating system upgrades to maintain the security and integrity of the technical environment.
• Support new infrastructure projects and initiatives.
• Maintain comprehensive configuration documentation for all assigned infrastructure.
• Collaborate with architects, technical leads, software developers, testers, security teams, and stakeholders.
• Be available for off-hours work as needed for support and deployments.

Skills

Linux systems

Systems administration

Team collaboration

Analytical skills

Problem solving

Education

Bachelor's degree or equivalent experience

Tools

Puppet

Satellite

IPA

Nagios

NetApp

Job description

Job Title: Infrastructure/Systems Administrator 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 Anticipated Posting End: 12/31/2026

The Opportunity:

Join our dynamic team as an Infrastructure/Systems Administrator and play a crucial role in maintaining and enhancing our IT infrastructure. You will be part of a fast-paced, collaborative environment where your expertise in systems administration will directly contribute to the success of mission-critical applications. This role offers the chance to work with cutting-edge technologies and support both corporate and customer environments.

Responsibilities:

• Resolve IT hardware and software infrastructure issues (servers, network, security, etc.) using advanced systems analysis techniques.

• Analyze, troubleshoot, and resolve issues with IT infrastructure, including user systems, servers, storage, and network connectivity.

• Provide system administration for assigned infrastructure and ensure robust security measures are in place.

• Apply security patches and operating system upgrades to maintain the security and integrity of the technical environment.

• Support new infrastructure projects and initiatives.

• Maintain comprehensive configuration documentation for all assigned infrastructure.

• Collaborate closely with architects, technical leads, software developers, testers, security teams, and stakeholders.

• Be available for off-hours work as needed for support and deployments.

Qualifications:

Required:

• Active TS/SCI w/ poly.

• Bachelor's degree in a related field or equivalent experience in lieu of a degree.

• Minimum 10 years of related experience.

• Extensive experience with Linux operating systems in development/test and production environments.

• Prior experience in a corporate or customer-facing role.

• Demonstrated ability to work in a team-oriented, fast-paced environment.

• Strong analytical and investigative skills to understand and resolve complex problems.

• Experience managing large projects or processes that span multiple departments.

Desired:

• Recognized subject matter expert in systems administration.

• Proven experience managing projects with minimal oversight.

• Working knowledge of Puppet, Satellite, IPA, Nagios, and Net App.

• Ability to influence policies, practices, and procedures.

• Strong problem-solving skills for complex and undefined issues.

• Innovative mindset with a track record of making significant improvements to systems or products.

• Creativity and ingenuity in developing new technical solutions.

• Ability to regularly employ innovative techniques to enhance system performance.

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:

$105,100-$231,100

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.