Systems Administrator Lead

Job Title: Systems Administrator Lead 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:   Lead systems administration efforts for complex Department of Defense IT infrastructure supporting intelligence and mission systems. As a Systems Administrator Lead, you will:  Administer and support daily operational requirements of computer network systems including workstations, file servers, web servers, and cloud-based infrastructure  Lead the installation, configuration, and maintenance of hardware, software, and systems upgrades across multiple security domains  Manage network accounts, network security, and web services for mission-critical systems  Implement and maintain network security tools including firewalls, anti-virus, and intrusion detection services  Monitor system configuration and performance to ensure optimal operation and availability  Provide technical leadership and mentorship to junior systems administrators  Interface with government customers, cybersecurity teams, and cross-functional technical staff  Responsibilities:    Lead the design, implementation, and management of enterprise-level IT infrastructure solutions  Administer Windows and Linux server environments across multiple security enclaves  Manage Active Directory, Group Policy, DNS, DHCP, and enterprise identity management systems  Implement and enforce Security Technical Implementation Guides (STIGs) and secure configuration baselines  Maintain system security compliance with NIST 800-53, Risk Management Framework (RMF), and DoD security requirements  Perform system troubleshooting, root cause analysis, and incident response activities  Develop and maintain system documentation including standard operating procedures, network diagrams, and configuration management databases  Plan and execute system patching, vulnerability remediation, and system hardening activities  Manage backup and recovery operations to ensure data integrity and business continuity  Coordinate with cybersecurity personnel to implement security controls and respond to security events  Lead infrastructure projects including system migrations, upgrades, and technology refresh initiatives  Train staff on software applications, systems access, and security best practices  Automate routine administrative tasks using PowerShell, Bash, Python, or other scripting languages  Support virtualization platforms such as VMware, Hyper-V, or cloud infrastructure (AWS, Azure)  Maintain system monitoring and alerting tools to proactively identify and resolve issues  Qualifications:   Required:    Active Secret security clearance (required)  Master's degree in Electrical Engineering, Electronic Engineering, Computer Engineering, Computer Science, or Information Systems  10+ years of professional experience in systems administration  Strong experience administering Windows Server and/or Linux server environments  Demonstrated experience with Active Directory, Group Policy, and enterprise identity management  Experience with network security tools including firewalls, intrusion detection systems, and anti-virus solutions  Knowledge of virtualization technologies (VMware, Hyper-V) and/or cloud platforms (AWS, Azure)  Understanding of networking concepts including TCP/IP, DNS, DHCP, routing, and switching  Experience implementing STIGs and security compliance requirements for DoD systems  Strong troubleshooting and problem-solving skills with ability to resolve complex technical issues  Excellent communication skills with ability to explain technical concepts to non-technical stakeholders  Demonstrated ability to lead technical teams and mentor junior staff  Compliance with Cyber WorkForce (CWF) directives, including any required certifications  Desired:    Industry certifications such as CompTIA Security+, Network+, Server+, Linux+, MCSA, MCSE, or RHCE  Experience with DoD Risk Management Framework (RMF) and Authorization to Operate (ATO) processes  Knowledge of DISA Enterprise Mission Assurance Support Service (eMASS) and Assured Compliance Assessment Solution (ACAS/Nessus)  Experience with containerization technologies (Docker, Kubernetes)  Familiarity with Infrastructure as Code (IaC) tools such as Ansible, Terraform, or Puppet  Experience with scripting and automation using PowerShell, Python, Bash, or similar languages  Understanding of DevSecOps principles and CI/CD pipelines  Experience supporting intelligence community systems or special access programs  Knowledge of Cross Domain Solutions (CDS) and multi-level security architectures  Experience with enterprise backup solutions (Veeam, Commvault, etc.)  Familiarity with SIEM tools and log aggregation platforms (Splunk, ELK)  Previous experience supporting government program offices or defense contractors  Experience with configuration management tools (SCCM, Satellite, etc.)  - 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