Information System Security Engineer (ISSE)

Cyber Defense Technologies; Westford (MA); On-site; USD 120,000 - 170,000; Full time

Benefits offered by this job

Health insurance

Retirement plans

Career development

Diversity & equal opportunity

Job summary

Cyber Defense Technologies is seeking an Information System Security Engineer (ISSE) for a DoD program in Westford, MA. This on-site role focuses on security engineering, systems administration, and information assurance support to the program.

An active Secret clearance is required; Top Secret is preferred. You will administer classified enterprise systems, perform vulnerability assessments, manage HBSS, and contribute to RMF/NIST/NISPOM compliance.

Qualifications

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

Responsibilities

• Systems Administration: Administer, maintain, upgrade, and ensure the readiness of classified virtual enterprise systems and related technologies (VMware, Cisco, Palo Alto, Windows Domain, Linux).
• Security Testing: Perform continuous monitoring and systems security testing using tools like ACAS/Nessus.
• Vulnerability Remediation: Implement and provide mitigation solutions for identified findings and patching requirements.
• Networking: Maintain, Troubleshoot, Upgrade Switching, Routing, Firewalls.
• HBSS Maintenance: Maintain HBSS installation and ensure upstream connection.
• Documentation & Procedures: Collaborate with the ISSO team and program staff to create, implement, and maintain procedural documents and operations (configuration management, continuous monitoring, business continuity, disaster recovery).

Skills

Security engineering

System administration

Vulnerability assessment

Networking

Team leadership

RMF/NIST/NISPOM

Automation: Ansible/PowerShell

VMware vSphere

Education

CISSP

CCNA

RHCSA

Security+

Tools

ACAS/Nessus

HBSS

VMware vSphere

Windows/Linux admin

Palo Alto/Cisco Firepower

Ansible

PowerShell

Job description

Information System Security Engineer (ISSE)

• Westford, Massachusetts

Overview:

CDT is seeking an experienced and skilled ISSE for a DoD program in Westford, MA. This position is hands‑on technical and will provide on‑site security engineering, systems administration, and information assurance support to the program.

Clearance Requirements:

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

Responsibilities:

• Systems Administration:Administer, maintain, upgrade, and ensure the readiness of several classified virtual enterprise systems and corresponding technologies (VMware, Cisco, Palo Alto, Windows Domain, Linux).
• Security Testing:Perform continuous monitoring and systems security testing using tools like ACAS/Nessus.
• Vulnerability Remediation:Implement and provide mitigation solutions for identified findings and patching requirements.
• Networking:Maintain, Troubleshoot, Upgrade Switching, Routing, Firewalls
• HBSS Maintenance:Maintain HBSS installation and ensure upstream connection.
• Documentation & Procedures: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:

• Software Installations:Perform enterprise software installations and upgrades.
• Compliance:RMF, NIST, and NISPOM requirements, configurations, settings, and documentation.
• Network Engineering:Experience with Enterprise Switching and Firewalls highly desired (For Example: Palo Alto, Cisco ASA, Cisco Firepower, Cisco IOS, Juniper JunOS)
• Linux Skills:Familiarity RedHat Enterprise Linux.
• Ansible or PowerShell automation experience preferred.
• VMware vSphere Experience (ESXi, vCenter, etc.)
• Windows Workstation and Server deployment and administration experience.
• 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 a CISSP, CCNA, Security +, RHCSA, or similar.

Why Join Cyber Defense Technologies?

At CDT, we offer a collaborative and inclusive work environment where your expertise in system engineering can help shape the future of cybersecurity and engineering solutions.

Compensation and Benefits:

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

CDT is committed to hiring and retaining a diverse workforce.

We are an Equal Opportunity employer making decisions without regard to race, color, religion, creed, sex, sexual orientation, gender identity, marital status, national origin, age, veteran status, disability, or any other protected class.