Information Systems Security Engineer (ISSE)

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Markon is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, national origin, age, protected veteran status, or disability status.

Markon is seeking an Information Systems Security Engineer (ISSE) for a technical development program supporting a cloud-based application and its associated cloud infrastructure for an Intelligence Customer. The ISSE will work with a large team of developers, software engineers, database administrators, and system architects.

Identifying, selecting, implementing, and assessing NIST SP 800-53 security and privacy controls.
• This role requires occasional on-call support after hours, one week per month
• Developing, establishing, and integrating secure configuration baselines per DISA STIGs and CIS benchmark guidelines.
• Participate in creating secure architectures and designs.
• Ensuring security requirements are integrated into the System/Software Development Life Cycle (SDLC).
• Performing Continuous Monitoring (ConMon) activities to support Assessment and Authorization (A&A) requirements.
• Reviewing, creating, and maintaining relevant Assessment and Authorization (A&A) artifacts.
• Performing security analysis and monitoring of a 100 percent AWS cloud-based system.
• Performing vulnerability scanning and analysis of the system.
• Perform remediation and develop security implementations based on security findings.
• Interface with Information System Security Managers (ISSM) to develop and accredit the system.
• Participate in or lead technical exchange meetings, document meeting outcomes as needed, and brief management.

• Active TS/SCI with FS Polygraph
• Bachelor of Science (BS) degree and relevant experience as follows:
• Expert: 11-16 years
• Hands-on experience with Linux (CLI).
• Hands-on experience with scripting and programming languages like BASH and Python.
• Solid understanding of, experience with networking (e.g., ports, routing tables, subnets, VPNs, firewalls, routers, etc.) to include design, integration, and troubleshooting issues.
• Experience in working on teams utilizing Agile workflows and processes.
• Strong understanding of NIST SP 800-37, NIST SP 800-53, NIST SP 800-160, DISA/CIS STIGs, and Common Vulnerabilities and Exposures (CVE).
• Experience with RMF workflow tools.

Desired Qualifications:

• Relevant IT certifications (e.g., CISSP, AWS Cloud Practitioner, AWS Cloud Security).
• Experience working with Infrastructure as Code (IaC) solutions such as Ansible/Terraform, or other configuration and automation tools.
• Experience in working in a cloud-based environment (AWS).
• Strong communication and organizational skills.