GCCS Systems Administrator

Salary: $100,000 - 140,000 per year Requirements:

• Bachelors degree in Computer Science, Information Technology, Systems Engineering, or a related field and 5+ years of systems administration experience; alternatively, a masters degree and 3+ years, an associates degree and 7+ years, or a high school diploma and 9+ years of relevant experience.
• Proven experience administering and maintaining 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.
• Relevant professional certifications, such as CompTIA Security+, RHCSA, or Oracle Certified Associate (Solaris), are preferred.
• Prior experience supporting U.S. military command operations, Combatant Command environments, or DoD C4I infrastructure is preferred.
• Familiarity with DoD STIG implementation, DISA compliance standards, and automated vulnerability scanning tools such as ACAS is preferred.
• Demonstrated ability to collaborate across multidisciplinary engineering teams in fast-paced operational environments is preferred.
• Must hold a current, active top secret security clearance.
• Must be able to remain stationary for 50% of the time, occasionally move around the office, and communicate accurately with coworkers, management, and customers, including when delivering presentations.

• Install, configure, maintain, and administer GCCS-J, GCCS-A, and GCCS-M servers and client workstations.
• Manage GCCS system baselines, database synchronization, track management, and C4I system interfaces across operational networks.
• Perform routine system administration, vulnerability patching, software updates, and diagnostic troubleshooting on Solaris, Linux, and Windows platforms.
• Maintain configuration baselines, operational logs, and data-feed synchronization across theater command networks.
• Work with technical teams, network engineers, and operational staff to support high GCCS availability.
• Carry out system backups, disaster recovery procedures, and security compliance checks for mission-critical command systems.
• Recommend and implement process improvements to strengthen GCCS performance and data reliability.

• Support
• Linux
• Network
• Oracle
• RHEL
• Security
• Unix
• Windows

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We are MANTECH, collaborating with hackajob to connect exceptional professionals with this opportunity. We are seeking a motivated, career- and customer-oriented Global Command and Control Systems Administrator to join our team in Doral, Florida.

last updated 42 week of 2026