Senior Cybersecurity Engineer / Information System Security Engineer (ISSE)

Role overview

Lead hands-on cybersecurity engineering for mission-critical government information systems. You will strengthen system security, manage vulnerabilities, and support ongoing monitoring and authorization work in a regulated environment, partnering with security officers, system administrators, network engineers, and other technical teams.

Responsibilities

- Implement and assess technical controls using the Risk Management Framework and applicable security control standards; identify gaps and develop corrective actions. - Support continuous monitoring and authorization activities, including maintaining security plans, assessment evidence, remediation milestones, and technical support for operating approvals. - Administer vulnerability scanning tools, conduct authenticated and unauthenticated assessments, and prioritize findings for remediation. - Maintain secure configuration baselines and evaluate proposed system changes for security impact. - Harden and administer Windows and Linux systems, support endpoint protection, and coordinate patching and remediation with infrastructure teams. - Provide technical reporting and collaborate with security stakeholders to sustain compliance and operational readiness.

Requirements

- At least 10 years of relevant experience in cybersecurity engineering, information assurance, vulnerability management, or enterprise security operations. - Experience in a defense, federal, or similarly regulated environment, including risk framework compliance, continuous monitoring, and authorization support. - Hands-on experience assessing vulnerabilities, implementing controls, remediating findings, and securing enterprise Windows and Linux systems. - Strong understanding of enterprise infrastructure, operating system security, endpoint protection, and vulnerability management. - Current CompTIA Security+ and an applicable current AWS certification. - Ability to meet the applicable DoD 8140 work-role qualification requirements and hold a Top Secret clearance for full performance.

Nice to have

- Experience with security configuration benchmarks, compliance scanning, vulnerability-management platforms, endpoint security management, or federal cloud security. - Familiarity with automation using tools such as Ansible, PowerShell, or Bash, and with producing compliance dashboards or vulnerability reports. - Additional security, systems administration, or cloud security certifications.