Senior Systems Administrator

Job Title: Senior Systems 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: Local * * * The Opportunity: We are seeking a highly capable IT Infrastructure professional to join our team supporting a mission-critical customer program. This is an opportunity to work in a dynamic environment where reliable, secure, and resilient infrastructure is essential to the success of the mission. You will administer, configure, and manage servers, storage systems, virtualization platforms, and network infrastructure to ensure appropriate function of hardware, software, and system specifications. You will play an important role in ensuring the availability, performance, security, and integrity of the infrastructure supporting the customer’s mission. This role is well suited for someone who wants to take ownership of critical infrastructure, work alongside experienced technical teams, and contribute directly to a mission where technical excellence, reliability, and security matter every day. Responsibilities: Infrastructure Administration & Support: Administer and manage IT infrastructure including servers, storage systems, virtual platforms, and network connectivity Analyze, troubleshoot, and resolve issues with IT hardware and software infrastructure using systems analysis techniques and procedures Provide system administration for assigned infrastructure and establish and maintain security as it relates to users Apply security patches and operating system upgrades to ensure the security and integrity of the technical environment Configuration & Deployment: Configure and deploy Windows and Linux-based servers, workstations, and supporting infrastructure Implement and maintain virtualization platforms for various applications and services Establish and maintain system configurations to meet technical and business requirements Security & Compliance: Work closely with the cybersecurity team to maintain seamless system operations while adhering to security protocols Implement security controls and access management for user systems and infrastructure Ensure compliance with established security standards and procedures Infrastructure Projects & Documentation: Support new infrastructure projects from planning through implementation Maintain all configuration documentation for assigned infrastructure Develop standard operating procedures, system configuration guides, and technical documentation Establish operational plans for technical areas and implement best practices Problem Resolution & Analysis: Diagnose complex problems spanning servers, operating systems, storage, networking, and hardware Use systems analysis techniques to ensure appropriate function of system specifications Provide on-site and remote technical support to resolve infrastructure issues Coordinate with various teams to resolve technical and operational challenges Stakeholder Communication: Present system capabilities and infrastructure solutions to technical and business stakeholders Communicate with executive leadership on matters of technical importance Provide feedback to improve infrastructure functionality and efficiency Qualifications: Required: Active Secret Clearance Bachelor’s degree in Computer Science, Information Technology, or a related field 5-10+ years of relevant experience in systems administration, infrastructure management, network administration, or a related technical discipline Strong problem-solving skills to troubleshoot infrastructure hardware and software issues Demonstrated experience supporting U.S. military, DoD, Intelligence Community, or other government customers Strong customer-facing communication and presentation skills Extensive Linux and Windows server/workstation administration and troubleshooting experience Deep knowledge of virtualization technologies (VMware, Hyper‑V, or similar platforms) Strong understanding of TCP/IP networking, routing, switching, firewalls, and network services Experience with security patch management, system hardening, and security compliance Knowledge of storage systems, backup solutions, and disaster recovery procedures Ability to work independently with minimal supervision Ability and willingness to travel to customer 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: $86,600 - $181,800 CACI is anEqualOpportunity 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 otherprotectedcharacteristic. #J-18808-Ljbffr CACI International