Demo

Information System Security Engineer (ISSE) I

cyberdefensetechnologies
Richardson, TX Full Time
POSTED ON 7/9/2026
AVAILABLE BEFORE 9/9/2026
Overview: CDT is seeking a skilled ISSE I for a DoD 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. 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).
  • Provide 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 Trellix/ENS installations and upstream connections.
  • Ensure that authorization/re-authorization support documentation is developed and maintained in conformance with applicable standards.
  • Monitor the client’s progress towards completion of POA&Ms.
  • Ensure that IS users’ activities are monitored and are following security policies and procedures.
  • Assist corporate security 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:
  • Performing enterprise software installations and upgrades.
  • Enterprise Linux (Red Hat, OEL, Fedora) experience.
  • Ansible or PowerShell automation experience not required but preferred.
  • Windows Workstation and Server deployment and administration experience.
  • RMF, NIST, and NISPOM requirements, configurations, settings, and documentation.
  • Network engineering experience highly sought after.
Qualifications:
  • 3 years of experience in deploying, configuring, maintaining, and monitoring computer systems and networks.
  • Technical certifications such as a Security , CISSP, CCNA, RHCSA, or similar
Why Join Cyber Defense Technologies?
At CDT, we offer a collaborative and inclusive work environment where your expertise 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.

Apply Now:
If you are a proactive ISSE and thrive in dynamic environments, we encourage you to apply and join the CDT team!

Salary.com Estimation for Information System Security Engineer (ISSE) I in Richardson, TX
$70,986 to $84,781
If your compensation planning software is too rigid to deploy winning incentive strategies, it’s time to find an adaptable solution. Compensation Planning
Enhance your organization's compensation strategy with salary data sets that HR and team managers can use to pay your staff right. Surveys & Data Sets

What is the career path for a Information System Security Engineer (ISSE) I?

Sign up to receive alerts about other jobs on the Information System Security Engineer (ISSE) I career path by checking the boxes next to the positions that interest you.
Income Estimation: 
$70,462 - $84,818
Income Estimation: 
$77,991 - $108,747
Income Estimation: 
$87,093 - $107,335
Income Estimation: 
$140,233 - $181,029
Income Estimation: 
$161,209 - $233,553
Income Estimation: 
$77,991 - $108,747
Income Estimation: 
$111,725 - $147,313
Income Estimation: 
$112,673 - $137,290
Income Estimation: 
$140,233 - $181,029
Income Estimation: 
$161,209 - $233,553
Employees: Get a Salary Increase
View Core, Job Family, and Industry Job Skills and Competency Data for more than 15,000 Job Titles Skills Library

Job openings at cyberdefensetechnologies

  • cyberdefensetechnologies Cedar, IA
  • Overview: CDT is seeking an experienced and skilled ISSE for a DoD program in Cedar Rapid, Iowa. This position is hands-on technical and will provide on-si... more
  • 16 Days Ago

  • cyberdefensetechnologies Chantilly, VA
  • Overview : CDT is looking to add a Information Systems Security Officer (ISSO) to provide advice and assistance to secure configuration and operations to t... more
  • 16 Days Ago

  • cyberdefensetechnologies Chantilly, VA
  • Overview: CDT is looking for a Red Team Operator to support a government customer onsite in Chantilly, VA. Candidates with OSCP certification are highly re... more
  • 16 Days Ago

  • cyberdefensetechnologies Chantilly, VA
  • Overview : CDT is looking to add a Information Systems Security Officer (ISSO) to provide advice and assistance to secure configuration and operations to t... more
  • 16 Days Ago


Not the job you're looking for? Here are some other Information System Security Engineer (ISSE) I jobs in the Richardson, TX area that may be a better fit.

  • cyberdefensetechnologies Richardson, TX
  • Overview: CDT is seeking an experienced and skilled ISSE for a DoD program in Richardson, TX. This position is hands-on technical and will provide on-site ... more
  • 16 Days Ago

  • cyberdefensetechnologies Richardson, TX
  • Overview: CDT is seeking an experienced and skilled ISSE for a DoD program in Richardson, TX. This position is hands-on technical and will provide on-site ... more
  • 16 Days Ago

AI Assistant is available now!

Feel free to start your new journey!