Mid Cyber Security Engineer

We are seeking a Cybersecurity Engineer to support robust Impact Level (IL) 5 and IL6 programs in an operational environment. This role is focused on serving as the primary ACAS and Trellix engineer responsible for enterprise vulnerability management, endpoint security operations, and maintaining the overall cybersecurity posture across multiple enclaves. This is a high-ownership role requiring a subject matter expert to manage and optimize enterprise security operations., * Own ACAS and Trellix operations across IL5/IL6 environments.

• Lead vulnerability management and endpoint security posture initiatives.
• Administer ACAS infrastructure, including Nessus scanners, scans, reporting, and POA&M tracking.
• Manage the Trellix platform via ePolicy Orchestrator (ePO), including policies, agents, alerts, and tuning.
• Support security monitoring and incident response using platforms like Microsoft Sentinel.
• Maintain endpoint security configurations, updates, and compliance across enterprise systems.
• Assist with tuning security detections, exclusions, and alerting logic to reduce false positives.
• Support vulnerability remediation efforts with infrastructure and mission partner teams.
• Monitor the overall system security posture and identify emerging risks.
• Work onsite with a small cyber team of approximately six engineers, an ISSM, and an ISSO.

• Must hold an active DoD 8140 IAT Level II, or higher, certification (e.g., Security+ CE, CySA+, CISSP, etc.).
• 5+ years of overall IT experience, with at least 4 years of progressive, hands-on experience in cybersecurity operations.
• Demonstrated hands-on deployment and administration experience with Trellix (ePO/ENS/endpoint security).
• Proven experience with ACAS/Nessus vulnerability management.
• Hands-on experience administering the Trellix ESS platform, including policy management and system administration through ePolicy Orchestrator (ePO).
• Familiarity with SIEM platforms such as Microsoft Sentinel.
• Ability to work full-time, 5 business days per week, onsite in Fort Meade, MD.

Preferred Qualifications

• Bachelor's degree in Computer Science, Information Security, or another STEM discipline.
• Experience with Azure environments.
• Experience with STIG compliance and system hardening.
• Prior experience supporting ATO packages and control implementation statements.
• Experience supporting systems in a DISA-administered environment.

Everforth Apex is a world-class IT services company that serves thousands of clients across the globe. When you join Everforth Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including ClearlyRateds Best of Staffing in Talent Satisfaction in the United States and Great Place to Work in the United Kingdom and Mexico. Everforth Apex uses a virtual recruiter as part of the application process. Click for more details. By applying for this job, you agree to receive calls, AI-generated calls, text messages, or emails from Everforth Apex and its affiliates, and contracted partners. Frequency varies for text messages. Message and data rates may apply. Carriers are not liable for delayed or undelivered messages. You can reply STOP to cancel and HELP for help. You can access our privacy policy at