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# Endpoint Security System Administrator

- **Company:** Mantech International Corporation
- **Location:** Miami, FL, United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Configuration Management, CompTIA Security+, Cyber Security, Intrusion Detection and Prevention, Network Security, McAfee VirusScan, Software Vulnerability Management, Information Technology, Patch Management, Vulnerability Analysis
- **Published:** October 15, 2026
- **Apply:** https://www.miamigigs.com/job.asp?id=3448865974&tx=HT8074THV&pt=1&aff=0B19D771-A501-4A5E-8338-2A822B784D54&utm_source=Job%20Feed&utm_medium=textkernel&utm_campaign=DE&utm_term=0B19D771-A501-4A5E-8338-2A822B784D54

## About the Role

* Bachelor's degree in Computer Science, Information Technology, Cybersecurity, or a related field with 5+ years of experience in systems or security 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 Trellix/McAfee Enterprise Security System (ESS/HBSS) policies, modules, and ePolicy Orchestrator (ePO).
 * Strong background in endpoint protection, host intrusion prevention, rogue system detection, and security compliance auditing.
 * Experience maintaining baseline configurations, patch management schedules, and security event logs.
 * Experience creating, maintaining, and communicating complex technical documentation and security administration workflows.

Preferred Qualifications:

 * Relevant professional certifications such as CompTIA Security+, Trellix/HBSS Advanced Administrator, or CISSP.
 * Prior experience supporting U.S. Military Command operations or Department of Defense enterprise technical environments.
 * Familiarity with DoD STIG implementation, vulnerability management tools (e.g., ACAS), and automated compliance reporting.
 * Demonstrated ability to collaborate effectively across multi-disciplinary engineering teams in dynamic operational settings.

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.

## Description

* Installing, configuring, maintaining, and administering Enterprise Security System (ESS/HBSS) modules and endpoint security capabilities.
 * Managing endpoint policy enforcement, agent deployments, vulnerability scanning, and security baseline compliance across enterprise systems.
 * Conducting routine system troubleshooting, event monitoring, threat detection, and incident response coordination.
 * Maintaining system baselines, agent software repositories, and configuration management controls for security tools.
 * Collaborating with cross-functional technical teams, systems administrators, and cybersecurity leadership to optimize network defense.
 * Performing security updates, system patches, engine upgrades, and baseline verification across physical and virtual assets.
 * Recommending and implementing continuous process improvements to streamline ESS management and operational security.