Cyber System Administrator, Senior

Job Title: Cyber System Administrator, Senior Job Category: Security Time Type: Full time Minimum Clearance Required to Start: TS/SCI Employee Type: Regular Percentage of Travel Required: Up to 25% Type of Travel: Local * * * The Opportunity:    Join a team dedicated to advancing national security through innovative irregular warfare and operations   expertise . CACI is looking for individuals to join a program that delivers mission-critical advisory, training, and operational support services that help mission partners stay ahead of rapidly evolving global threats. Working across geographic and functional combatant commands, these professionals play a vital role in developing, integrating, and sustaining mission-ready task forces that enhance joint force effectiveness and operational success.   This is an opportunity to contribute to high-impact missions, collaborate with experienced professionals, and support strategic operations that strengthen our nation's defense capabilities around the world. Candidates who thrive in dynamic environments, embrace complex challenges, and are committed to mission excellence will find meaningful opportunities for growth and impact within CACI and on this team.    Responsibilities   Administers, configures, and   maintains   classified and unclassified information systems supporting operational and mission requirements.   Manages user accounts, roles, permissions, and access controls   in accordance with   security policies and least privilege principles.   Monitors system performance, availability, and security using approved tools to   identify   and resolve issues.   Implements system hardening, patch management, and configuration baselines to   maintain   cybersecurity compliance.   Supports accreditation, authorization, and continuous monitoring activities in alignment with DoD cybersecurity requirements.   Troubleshoots hardware, software, and network issues to ensure system reliability and continuity of operations.   Maintains system documentation, configuration management records, and standard operating procedures.   Coordinates with cybersecurity, network, and operations teams to support incident response and risk mitigation.   Performs data backup, recovery, and continuity procedures to protect mission-critical information.   Provides technical support and guidance to users and stakeholders on system capabilities and security best practices.   Qualifications:   Required   TS/SCI clearance   Bachelor’s degree in computer science, Information Technology, Cybersecurity, or related technical field   5 years executing cyber system administration responsibilities for DOW systems in TS or higher environment   DoD 8570.01-M IAT Level II or IAT Level III certification (Security+ CE,   CySA +, GICSP, GSEC, or SSCP)   Computing Environment certification (Windows: MCSA or Linux+/RHCSA, or equivalent))   Demonstrated experience managing Windows Server and/or Linux operating systems   Proven experience implementing and   maintaining   cybersecurity controls and STIG compliance   Experience with network administration including TCP/IP, DNS, DHCP, VPN, and   firewall   configurations   Proficiency   with Active Directory, Group Policy, and user access management   Knowledge of virtualization technologies (VMware, Hyper-V)   Desired Qualifications   DoD 8570.01-M IAM Level I, II, or III (CND, CISM, CISSP)   Advanced technical certifications (CCNA, RHCE, MCSE, or equivalent)   Cloud certifications (AWS, Azure, or CompTIA Cloud+)   Strong written and verbal communication skills for technical documentation and briefings   5+ years of experience in DoD cyber operations or military IT environments   Experience with DoD Risk Management Framework (RMF) and Authorization to Operate (ATO) processes   Background supporting SCIF or other   sensitive compartmented   information environments   Experience with cybersecurity incident response and forensic analysis   Demonstrated experience with automation and scripting (PowerShell, Python, Bash)   Familiarity with   DevSecOps   practices and CI/CD pipelines   Experience with cloud infrastructure administration (AWS GovCloud, Azure Government)   Previous   experience with DISA guidance, CMMC compliance, or CNSSI standards   - 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