Infrastructure/System Administrator

Job Title: Infrastructure/System 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: Continental US * * * The Opportunity: Join a dynamic, fast‑paced Agile development program as an Infrastructure / Systems Administrator. In this role, you’ll ensure the reliability and availability of diverse development servers and applications that support daily mission needs. You’ll work with a wide range of technologies, tackle meaningful challenges, and have continuous opportunities to expand your technical expertise and grow your career. Responsibilities: • Design and manage AWS‑based systems and solutions • Install, configure, and maintain Linux and Windows servers • Monitor system performance and quickly troubleshoot issues • Protect and optimize IT infrastructure for efficiency and security • Assist with Windows and Linux server patching • Perform upgrades, IAVA patching, and maintain STIG compliance • Monitor production systems and ensure contract‑aligned performance • Troubleshoot outages and system faults • Manage AWS cloud resources • Implement access controls, backups, and firewall protections • Build and maintain internal technical documentation, manuals, and policies Qualifications: Required: • Active Secret clearance • Bachelor’s degree or equivalent professional experience • Minimum 3 years of relevant systems or infrastructure experience • Security+ certification • Proven experience as a System Administrator, Network Administrator, or similar role • Strong written and verbal communication skills • Experience with databases, LAN/WAN networks, and patch management • Ability to understand, analyze, and document technical requirements • Ability to work independently with minimal supervision • Expertise with Windows and Linux operating systems Desired: • Familiarity with GIT, Jenkins CI/CD, Nessus, Oracle products, Ansible • Experience with STIG compliance and security patching • Knowledge of AWS environments, services, and cloud architecture • Scripting experience (Python, Java, PowerShell) 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. 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: $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.