Information System Security Engineer

CDT is seeking an experienced and skilled Information Systems Security Engineer (ISSE) for a hands-on technical role providing on-site security engineering, systems administration, and information assurance support to a DoD program in Westford, MA.

An active Secret clearance is required; Top Secret is preferred. Candidates who do not meet these clearance requirements will not be considered.

Responsibilities

• Administer, maintain, upgrade, and ensure the readiness of several classified virtual enterprise systems and corresponding technologies (VMware, Cisco, Palo Alto, Windows Domain, Linux).
• Perform continuous monitoring and systems security testing using tools like ACAS/Nessus.
• Implement and provide mitigation solutions for identified findings and patching requirements.
• Maintain, troubleshoot, and upgrade switching, routing, and firewalls.
• Maintain HBSS installation and ensure upstream connection.
• Collaborate with the ISSO team and program/project staff to create, implement, and maintain procedural documents and operations (configuration management, continuous monitoring, business continuity, disaster recovery, etc.).

Technical Areas of Expertise

• Perform enterprise software installations and upgrades.
• Ensure compliance with RMF, NIST, and NISPOM requirements, configurations, settings, and documentation.
• Experience with enterprise switching and firewalls (e.g., Palo Alto, Cisco ASA, Cisco Firepower, Cisco IOS, Juniper JunOS).
• Familiarity with RedHat Enterprise Linux.
• Ansible or PowerShell automation experience preferred.
• VMware vSphere experience (ESXi, vCenter, etc.).
• Windows workstation and server deployment and administration.
• Network engineering experience highly sought after.

Qualifications

• 8+ years of experience in deploying, configuring, maintaining, and monitoring computer systems and networks.
• Previous team leadership experience.
• Experience with implementing highly technical solutions and reporting their importance to the organization and stakeholders.
• Technical certifications such as CISSP, CCNA, Security+, RHCSA, or similar.

Benefits

• Competitive salary based on experience.
• Comprehensive benefits package, including health, dental, and retirement plans.
• Opportunities for professional development and career advancement.