GCCS Systems Administrator with Security Clearance

MANTECH seeks a motivated, career and customer-oriented Global Command and Control (GCCS) Systems Administrator to join our team in Doral, FL. Responsibilities include but are not limited to:

• Installing, configuring, maintaining, and administering Global Command and Control System (GCCS-J/GCCS-A/GCCS-M) servers and client workstations.
• Managing GCCS system baselines, database synchronization, track management, and C4I system interfaces across operational networks.
• Performing routine system administration, vulnerability patching, software updates, and diagnostic troubleshooting on Solaris, Linux, and Windows platforms.
• Maintaining system configuration baselines, operational logs, and data feed synchronization across theater command networks.
• Collaborating with cross-functional technical teams, network engineers, and operational staff to ensure high GCCS availability.
• Executing system backups, disaster recovery procedures, and security compliance verification for mission-critical command systems.
• Recommending and implementing continuous process improvements to enhance GCCS operational performance and data reliability.

Minimum Qualifications

• Bachelor's degree in Computer Science, Information Technology, Systems Engineering, or a related field with 5+ years of experience in systems administration.
• OR a master's degree and 3+ or more years of relevant experience
• OR an associate's degree and 7+ or more years of relevant experience
• OR a high school diploma and 9+ or more years of relevant experience
• Proven experience administering and maintaining Global Command and Control System (GCCS) variants (GCCS-J, GCCS-A, or GCCS-M) in an enterprise environment.
• Strong background in Unix/Solaris, Linux (RHEL), and Windows server administration, including database management and command track synchronization.
• Experience maintaining system baselines, configuration management controls, and patch management protocols.
• Experience creating, maintaining, and communicating complex technical documentation and system baseline architecture diagrams.

Preferred Qualifications

• Relevant professional certifications such as CompTIA Security+, Red Hat Certified System Administrator (RHCSA), or Oracle Certified Associate (Solaris).
• Prior experience supporting U.S. Military Command operations, Combatant Command environments, or Department of Defense C4I infrastructure.
• Familiarity with DoD STIG implementation, DISA compliance standards, and automated vulnerability scanning tools (ACAS).
• Demonstrated ability to collaborate effectively across multi-disciplinary engineering teams in fast-paced operational environments.

Clearance Requirements

• Must hold a current/active top secret security clearance.

Physical Requirements

• Must be able to remain in a stationary position 50%.
• Needs to occasionally move about inside the office to access file cabinets, office machinery, etc.
• Frequently communicates with co-workers, management, and customers, which may involve delivering presentations. Must be able to exchange accurate information in these situations.