Cyber Security Engineer SME

Location: Herndon, VA

Department: Enterprise IT

Location Type: IN_OFFICE

Employment Type: FULL_TIME

• Manage up to 10 A&A packages independently, ensuring timely updates, quality documentation, and full compliance with customer requirements.
• Develop new A&A packages from inception through final ATO approval.
• Provide evidence and respond to security control requirements within the customer’s A&A tool (e.g., Greenlight or equivalent).
• Maintain and track Plans of Action and Milestones (POAMs) after ATO issuance.
• Process Security-Relevant Changes (SRCs) and document all modifications to system configurations.
• Collaborate closely with the Information System Security Manager (ISSM) on system changes, approvals, and ongoing compliance needs.
• Perform vulnerability and compliance scans using Rapid7.
• Work with development teams to ensure systems are patched regularly and all software versions remain current.
• Conduct audits using Splunk, AWS CloudWatch, and AWS CloudTrail.
• Navigate AWS Console (CAP) to gather evidence, validate configurations, and ensure system compliance.
• Demonstrate familiarity with AWS serverless technologies such as Lambda, and containerized platforms.
• Use JIRA and Confluence for workflow management, documentation, and collaboration.
• Understand and work across multiple customer environments or fabrics.

• Bachelor's or Master's degree (preferred) in a relevant discipline.
• Minimum of 10 years of relevant experience in cybersecurity, system engineering, or information assurance.
• Strong technical expertise in computer network design, implementation, and accreditation.
• Proven ability to provide oversight and coordination for multiple contractors supporting program objectives.
• Excellent written and verbal communication skills, with the ability to work independently or as part of a team.
• Expertise in certification and accreditation processes.
• In-depth knowledge of security policies and frameworks such as:
• US citizenship and an active TS/SCI with Polygraph security clearance required