Information System Security Engineer

Cyber Defense Technologies; Richardson (TX); On-site; USD 120,000 - 150,000; Full time

Benefits offered by this job

Health insurance

Retirement plans

Professional development

Job summary

Cyber Defense Technologies is seeking an experienced ISSE for a DoD program in Richardson, TX. This hands-on role provides on-site security engineering, systems administration, and information assurance support to the program.

An active Secret clearance is required, with Top Secret preferred. The qualified candidate will lead and collaborate with a small team to maintain secure systems and readiness.

Qualifications

• 8+ years of experience deploying, configuring, maintaining, and monitoring computer systems and networks.
• Leadership experience managing a small team of admins/security engineers.
• Experience delivering highly technical solutions and communicating their importance to stakeholders.
• DISA ACAS and Trellix certifications preferred.
• Knowledge of RMF/NIST/NISPOM requirements and related documentation.

Responsibilities

• Administering, maintaining, upgrading, and ensuring readiness of secured enterprise systems (VMware vSphere, Linux, Windows).
• Perform site-lead/management duties for a team of System Administrators and ISSEs.
• Provide senior-level security engineering and development support across the system life cycle.
• Conduct continuous monitoring and security testing using Nessus, ACAS, Trellix, Splunk.
• Develop and maintain authorization/re-authorization support documentation.

Skills

Team leadership

Security engineering

System administration

Documentation

Education

CISSP

CCNA

Security+

RHCSA

Tools

VMware vSphere

Nessus

ACAS

Trellix

Splunk Enterprise

Ansible

PowerShell

Job description

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

Overview: CDT is seeking an experienced and skilled ISSE for a DoW program in Richardson, TX.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

• Experience with administering, maintaining, implementing upgrades, and ensuring the readiness of several classified virtual enterprise systems and corresponding technologies (e.g., VMware vSphere, Enterprise Linux, Cisco Systems (Switch, Router, NGFW), Palo Alto, Windows Server, Windows Workstation).
  • Knowledge of Cisco ISE/Forescout CounterACT NAC technologies preferred.
• Perform Site-Lead/Management duties that support the workflow and project goals for a small team of System Administrators and Information Security Engineers.
• Provide senior-level security engineering and development support throughout the system life cycle.
• Perform appropriate continuous monitoring and systems security testing using tools such as Nessus Security Center/ACAS, Trellix, and Splunk Enterprise.
• Provide mitigation solutions for identified findings and patching requirements.
• Ensure that proposed system changes are reviewed and that implemented system modifications do not adversely impact the security of the system. (e.g., Change Management)
• Maintain local Trellix/ENS installations and upstream connections.
• Work with upstream service providers such as DISA and C5ISR.
• Ensure that authorization/re-authorization support documentation is developed and maintained in conformance with applicable standards.
• Assist with the client’s progress towards completion of POA&Ms.

Technical Areas of Expertise

• Performing enterprise software installations and upgrades.
• Enterprise Linux (Red Hat, OEL, Fedora) experience.
• Ansible or PowerShell automation experience preferred.
• VMware vSphere Experience (ESXi, vCenter, etc.)
• Windows Workstation and Server deployment and administration experience.
• RMF, NIST, and NISPOM requirements, configurations, settings, and documentation.
• 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.
• DISA ACAS and Trellix Certifications preferred.

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