Endpoint Security Administrator – Top Secret Clearance

MANTECH; Miami (FL); On-site; USD 110,000 - 160,000; Full time

Job summary

MANTECH is seeking an Endpoint Security System Administrator in Doral, FL to lead the deployment, configuration, and ongoing management of enterprise security systems. You will implement policy, monitor vulnerabilities, and coordinate incident response within a defense-grade environment.

Candidates should have 5+ years in security administration and experience with Trellix/McAfee ESS and ePO, plus strong documentation skills.

Qualifications

• Bachelor’s degree in Computer Science, Information Technology, Cybersecurity, or related field with 5+ years of experience in systems or security administration.
• OR a master’s degree and 3+ years of relevant experience
• OR an associate’s degree and 7+ years of relevant experience
• OR a high school diploma and 9+ 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.

Responsibilities

• 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.

Skills

Endpoint protection

Host intrusion prevention

Threat detection

Security compliance auditing

Education

Bachelor's degree in CS/IT/Cybersecurity

Master's degree in related field

Associate's degree

High school diploma

Tools

Trellix/McAfee ESS

ePolicy Orchestrator (ePO)

ACAS vulnerability tools

DoD STIG tooling

Job description

MANTECH is seeking an Endpoint Security System Administrator in Doral, FL to lead the deployment, configuration, and ongoing management of enterprise security systems. You will implement policy, monitor vulnerabilities, and coordinate incident response within a defense-grade environment.

Candidates should have 5+ years in security administration and experience with Trellix/McAfee ESS and ePO, plus strong documentation skills.