Information Systems Security Engineer (ISSE)

Background Information: Innovative Defense Technologies (IDT), provider of cutting-edge cloud-based integration, automated testing and data analysis for complex, mission-critical systems in the US Department of Defense (DOD), is seeking an Information Systems Security Engineer (ISSE) to be based in our Arlington, VA office. Leveraging advanced software automation, model-based systems engineering (MBSE), and AI-driven capabilities, IDT accelerates capability development, enhances operational readiness, and reduces lifecycle costs for the Department of Defense. The company is dedicated to transforming defense systems through innovation, efficiency, and mission-critical results. Overview:              The ISSE will implement, manage, and support the Classified Information System (IS) needs for all Windows, Linux, and VMware Enterprise-equipped classified lab resources. All applicants must currently possess an active U.S. Security Clearance. Responsibilities Include: 

• Work with Information System Security Manager (ISSM), Information System Security Officer (ISSO) and Facility Security Officer (FSO) to ensure information system compliance in support of the IDT security program
• Implement and enforce Security Technical Implementation Guides (STIGs) across Windows, Linux, and application environments to enhance system security.
• Collaborate with Cyber Compliance engineers to achieve the information system approvals to operate
• Lead the ISSOs and Security administrators through the RMF process and provide tasking to keep programs on schedule
• Works closely with the ISSM in documenting the requirements, procedures and protocols of the architecture and systems
• Ensure continuous compliance of multiple information systems by managing monthly patching, software upgrades, and updates.
• Verify security control test results for Risk Management Framework (RMF) packages, ensuring compliance with security best practices.
• Streamline and automate manual security processes using Bash, PowerShell, Ansible, and Python to improve efficiency and reduce human error.
• Maintain and optimize security tools such as Wazuh, Tenable.SC, Trellix ePO, Red Hat Satellite, and WSUS to strengthen the organization’s security posture.
• Assist in the creation and implementation of security policies, procedures, and best practices to enhance overall cybersecurity operations.
• Support the deployment and integration of new security tools to improve monitoring, detection, and response capabilities.
• Provide technical support, including software installations and removals, troubleshooting security-related issues, account unlocks, and password resets.
• Participate in monthly maintenance cycles

Minimum Required Qualifications: 

• Bachelor’s degree in Computer Science, Information Technology, or equivalent experience/education
• 5+ years’ of total relevant full-time experience
• DoD 8570.01M: candidate must meet the requirements of an IAM Level I as a condition of employment

Required Skills:

• Experience as a Windows System/Server Administrator
• 3+ Experience in Linux System Administration (preferably Red Hat), including YUM/DNF, package management, user access control, SELinux
• Hands-on experience managing RHEL systems using Red Hat Satellite for centralized patching, system lifecycle management, and repository mirroring
• Windows Operation System (10/11)
• Windows Server Administration (2016/2019/2022)
• Experience with Security Tools (SIEM, Endpoint Security)
• Experience with System Hardening (e.g., Security Technical Implementation Guides (STIG))
• Experience with virtualization (VMware, vSphere)
• Familiarity with the Defense Counterintelligence and Security Agency Assessment and Authorization Process Manual (DAAPM) and RMF requirements
• Understanding of NIST Security Frameworks (Special Publication 800-53)
• Ability to travel approximately 10%

Preferred Skills: 

• Experience working in air-gapped, classified, or highly secure environments with no direct internet access
• Basic scripting for automation (Bash/Powershell)
• Networking experience – TCP/IP, DNS, NetBIOS, switching, firewalls
• COMSEC (Communications Security) experience
• Information Assurance/Information Security
• Containerization
• Backup & recovery systems

Competencies: 

• Maintain certification(s) by completing required continuing education credits
• Excellent verbal and written communication skills
• Attention to detail with high level of accuracy and confidentiality
• Initiative, reliability, teamwork and customer service orientation
• Strong organization and planning skills

EEO Statement:IDT is an Equal Opportunity Employer.