Cybersecurity Engineer II

American Systems • Manassas, VA

17h • $115,000 - $145,000

About The Position

Now Hiring at AMERICAN SYSTEMS Epsilon, Inc. has joined AMERICAN SYSTEMS! As one organization, we offer expanded resources, streamlined operations, and increased opportunities for growth and development. Join us to be part of a dynamic, collaborative environment dedicated to innovation and customer success. As the Cybersecurity Engineer II, you will be responsible for designing, implementing, and maintaining secure information systems that support mission-critical operations. You will utilize technical expertise in endpoint security, vulnerability management, security monitoring, and compliance within Windows and Linux enterprise environments. You will also serve as a key technical contributor, supporting both defensive cyber operations and Risk Management Framework (RMF) activities. Additionally, in this position you will: Design, implement, and maintain cybersecurity controls to protect enterprise systems and networks. Administer and optimize Trellix ePO (formerly McAfee ePO) for endpoint protection, policy enforcement, threat detection, and incident response across Windows and Linux systems. Operate and maintain ACAS/Nessus vulnerability scanning solutions; analyze findings and support remediation efforts. Develop, maintain, and enhance Splunk dashboards, alerts, and correlation rules for security monitoring, log analysis, and threat detection. Perform technical security assessments, vulnerability assessments, and configuration compliance reviews. Support RMF activities including SSP development, POA&M management, control implementation, and continuous monitoring. Apply STIGs and SCAP benchmarks to Windows and Linux systems; validate compliance and document results. Analyze security events, logs, and alerts to identify indicators of compromise and support incident response actions. Collaborate with system administrators, network engineers, and cybersecurity leadership to implement risk mitigations. Provide technical recommendations to improve overall cybersecurity posture based on emerging threats and trends. Develop technical documentation including SOPs, security procedures, and assessment reports.

Requirements

• As a requirement of this position, all candidates must be a U.S. Citizen. In accordance with 8 U.S.C. 1324b(a)(2)(C) , we will not consider candidates for this position who do not meet the aforementioned conditions.
• Must have an active Secret clearance with the ability to obtain a Top Secret with SCI eligibility or have an active Top Secret with SCI eligibility. Will be subject to a federal background investigation.
• Bachelor’s degree in Cybersecurity, Information Technology, Computer Science, or a related field (or equivalent experience).
• 3+ years of progressive experience in cybersecurity engineering, system security, or cyber defense roles.
• Current CompTIA Security+ Ce certification required
• Must hold the following certifications or have the ability to obtain them the within 3 months of hire date: Current DISA 201 ePO and 301 ePO certifications Current Splunk certification (Admin, Engineer, Analyst or Architect certs will be accepted)
• Advanced experience with Trellix ePO administration in enterprise environments.
• Strong proficiency with Splunk SIEM, including SPL queries, dashboards, alerts, and reporting.
• Hands-on experience with ACAS/Nessus vulnerability scanning and remediation tracking.
• Expertise securing Windows and Linux operating systems, including system hardening and patch management.
• Experience with STIGs, SCAP, and configuration compliance validation.
• Knowledge of network and host-based security technologies including EDR, IDS/IPS, firewalls, and SIEM.
• Familiarity with scripting and automation (PowerShell, Bash, or Python) to support security operations.
• Strong understanding of NIST RMF and system authorization lifecycles.

Responsibilities

• Design, implement, and maintain cybersecurity controls to protect enterprise systems and networks.
• Administer and optimize Trellix ePO (formerly McAfee ePO) for endpoint protection, policy enforcement, threat detection, and incident response across Windows and Linux systems.
• Operate and maintain ACAS/Nessus vulnerability scanning solutions; analyze findings and support remediation efforts.
• Develop, maintain, and enhance Splunk dashboards, alerts, and correlation rules for security monitoring, log analysis, and threat detection.
• Perform technical security assessments, vulnerability assessments, and configuration compliance reviews.
• Support RMF activities including SSP development, POA&M management, control implementation, and continuous monitoring.
• Apply STIGs and SCAP benchmarks to Windows and Linux systems; validate compliance and document results.
• Analyze security events, logs, and alerts to identify indicators of compromise and support incident response actions.
• Collaborate with system administrators, network engineers, and cybersecurity leadership to implement risk mitigations.
• Provide technical recommendations to improve overall cybersecurity posture based on emerging threats and trends.
• Develop technical documentation including SOPs, security procedures, and assessment reports.

Benefits

• AMERICAN SYSTEMS provides for the welfare of its employees and their dependents through a comprehensive benefits program by offering healthcare benefits, paid leave, retirement plans, insurance programs, and education and training assistance.

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level
• Number of Employees: 501-1,000 employees