Job Title: Sr. Systems Administrator (Active Directory) 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: Continental US * * * The Opportunity: Join CACI as a Sr. Systems Administrator (Active Directory) supporting the modernization and operations of the Distributed Ground System (DGS) at Langley AFB in Hampton, VA. In this role, you’ll work in a highly technical, mission‑driven environment where your expertise directly enhances system readiness and performance. This is an immediate opportunity to make a meaningful impact while advancing your career. Responsibilities: * Maintain and operate a virtualized data center environment utilizing VMware and Dell/EMC server and storage technologies. * Install, support, and maintain servers—including performance tuning, system-wide configuration, and storage allocation. * Protect system integrity, confidentiality, and availability through robust patch management, antivirus oversight, and data backup/restoration. * Diagnose and resolve service outages, technical inquiries, and system-related issues. * Conduct system analysis and implement updates to keep technologies modern and effective. * Perform routine system health checks across processes, services, networks, and storage. * Update documentation, support configuration management, and resolve reported issues. * Partner with the security team on upgrades, compliance, and system security initiatives. * Provide technical mentorship and guidance to Tier 1 and Tier 2 support personnel. Qualifications: Required: * Active TS/SCI clearance * Bachelor’s degree in a related field or equivalent experience in lieu of a degree * Minimum 5 years of relevant IT/System Administration experience * Security+ certification * Experience with one or more of the following: Microsoft Server 2019, Microsoft Windows 11, Active Directory, Group Policy, DNS, or VMware - 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: $75,200-$158,100 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.