Security Systems Administrator - HBSS (5699) with Security Clearance

SMX is seeking a Security Systems Administrator to join our Host Based Security System (HBSS) team supporting NAWCAD DNA at NAS Patuxent River, MD. This position will provide administration, maintenance, monitoring, troubleshooting, and cybersecurity support for enterprise endpoint security systems within a Department of Defense environment. The ideal candidate will have a strong systems administration background with experience supporting enterprise security technologies, endpoint management, cybersecurity compliance, and Windows-based environments. Experience with Trellix/McAfee HBSS and ePolicy Orchestrator (ePO) is highly desired. This position requires onsite support at NAS Patuxent River based on program and customer requirements.

Essential Duties && Responsibilities

• Administer, maintain, monitor, and troubleshoot HBSS/Trellix infrastructure and managed endpoints.
• Support Trellix ePolicy Orchestrator (ePO), endpoint agents, policies, repositories, and associated security modules.
• Monitor system health, endpoint communication, policy compliance, security events, and overall HBSS operational status.
• Troubleshoot agent deployment, connectivity, policy enforcement, software conflicts, and endpoint security issues.
• Support deployment and maintenance of Trellix Endpoint Security (ENS) and other HBSS-managed products.
• Perform software deployments, upgrades, patches, configuration changes, and routine system maintenance.
• Support vulnerability remediation, system hardening, STIG compliance, and other DoD cybersecurity requirements.
• Review, troubleshoot, and resolve incidents, service requests, and trouble tickets within established service-level requirements.
• Coordinate with Windows, Unix, Information Assurance, Network, Engineering, and other infrastructure teams to identify and resolve enterprise issues.
• Assist with testing and implementation of new HBSS policies, configurations, software versions, and security capabilities.
• Maintain technical documentation, standard operating procedures, system configurations, troubleshooting guides, and operational records.
• Support cybersecurity audits, inspections, assessments, and compliance activities.
• Identify recurring technical issues and recommend improvements to system reliability, security, and operational processes.
• Provide timely status updates and appropriately escalate technical or operational issues.
• Perform additional systems administration and cybersecurity support duties as required.

Required Skills && Experience

• Clearance Required: Top Secret
• Experience supporting enterprise systems administration, cybersecurity, or endpoint security environments.
• Working knowledge of Windows operating systems and enterprise client/server environments.
• Understanding of endpoint security technologies, cybersecurity principles, and vulnerability management.
• Experience troubleshooting enterprise applications, endpoints, services, and network connectivity.
• Familiarity with DoD cybersecurity requirements, security contr ols, STIGs, system hardening, and patch management.
• Ability to analyze technical issues, determine root cause, and independently work through resolution.
• Strong written and verbal communication skills with the ability to document technical activities and communicate issues to both technical and non-technical stakeholders.
• Ability to work effectively across multiple technical teams in a large enterprise environment.
• Current DoD 8570/8140-compliant certification appropriate for the position, such as CompTIA Security+ CE, or ability to obtain the required certification within the established timeframe.

Desired Skills && Experience

• Hands-on experience with Trellix/McAfee HBSS and ePolicy Orchestrator (ePO).
• Experience administering Trellix Endpoint Security (ENS) or related endpoint security products.
• Experience with HBSS policy creation, deployment, agent management, troubleshooting, and reporting.
• Experience supporting HBSS within a Department of Defense environment.
• Experience with ACAS findings, vulnerability remediation, and security compliance activities.
• Familiarity with Active Directory, Group Policy, PowerShell, and Windows Server administration.
• Experience with enterprise patching, software deployment, and configuration management.
• Knowledge of DISA STIGs and DoD Risk Management Framework (RMF) requirements.
• Previous experience supporting Navy, NMCI, NAWCAD, or other DoD enterprise IT environments.

#cjpost #LI-ONSITE The SMX salary determination process takes into account a number of factors, including but not limited to, geographic location, Federal Government contract labor categories, relevant prior work experience, specific skills, education and certifications. At SMX, one of our Core Values is to Invest in Our People so we offer a competitive mix of compensation, learning && development opportunities, and benefits. Some key components of our robust benefits include health insurance, paid leave, and retirement.

The proposed salary for this position is: $100,000 - $130,000 USD At SMX®, we are a team of technical and domain experts dedicated to enabling your mission. From priority national security initiatives for the DoD to highly assured and compliant solutions for healthcare, we understand that digital transformation is key to your future success. We share your vision for the future and strive to accelerate your impact on the world. We bring both cutting edge technology and an expansive view of what's possible to every engagement.

Our delivery model and unique approaches harness our deep technical and domain knowledge, providing forward-looking insights and practical solutions to power secure mission acceleration. SMX is an Equal Opportunity employer including disabilities and veterans. Selected applicant may be subject to a background investigation and/or education verification. SMX does not sponsor a new applicant for employment authorization or immigration related support for this position (i.e.

H1B, F-1 OPT, F-1 STEM OPT, F-1 CPT, J-1, TN, E-2, E-3, L-1 and O-1, or any EADs or other forms of work authorization that require immigration support from an employer).