Information Systems Security Engineer III - (W2PE

Information Systems Security Engineer III

The Information System Security Engineer III (ISSE III) serves as a key technical leader responsible for integrating cybersecurity across the full lifecycle of complex information systems. This role acts as the primary liaison between systems engineering teams and security compliance stakeholders, ensuring security requirements are effectively implemented without compromising mission or operational objectives.

This position supports a Department of Defense (DoD) program focused on enhancing the cybersecurity posture of mission-critical systems operating within Amazon Web Services (AWS) classified environments. The role is heavily centered on executing the Risk Management Framework (RMF), driving system hardening efforts, conducting vulnerability assessments, and developing the documentation required to achieve and maintain Authority to Operate (ATO).

Summary of

Essential Job Functions:

• Security Architecture & Engineering
• Design, develop, and implement secure architectures across multi-level systems, cloud environments (AWS), and on-premise networks
• Integrate security controls into system design aligned with NIST 800-53 and DoD requirements

• Risk Management Framework (RMF) Leadership
• Lead RMF lifecycle activities, including system categorization, control selection, implementation, and continuous monitoring
• Tailor security controls based on system risk, mission needs, and operational constraints

• Assessment & Authorization (A&A)
• Develop and maintain Body of Evidence (BoE) documentation, including:
• System Security Plans (SSP)
• Security Assessment Reports (SAR)
• Plan of Action & Milestones (POA&M)
• Support assessment activities and coordinate with Authorizing Officials and assessors

• Vulnerability Management & System Hardening
• Conduct vulnerability scans using tools such as Nessus, ACAS, and SCAP
• Analyze findings, prioritize risks, and drive remediation efforts with engineering teams
• Implement and validate system hardening in accordance with DoD and industry standards

• Stakeholder Engagement & Security Advisory
• Serve as a trusted advisor to engineering teams and leadership on cybersecurity risks and mitigation strategies
• Translate technical vulnerabilities into mission and business risk for senior stakeholders
• Provide security guidance on system changes, architecture decisions, and engineering trade-offs

Required Qualifications:

• Minimum of 5 years of experience in cybersecurity, systems engineering, or information assurance
• Experience implementing the DoD Risk Management Framework (RMF) in regulated or classified environments
• Active certification meeting DoD 8570 / 8140 requirements (e.g., CISSP, CASP+, or equivalent)
• Strong understanding of:
• Network architecture and protocols
• Encryption and key management
• Secure system configuration (Windows and Linux)
• Experience with vulnerability assessment tools (e.g., Nessus, ACAS, SCAP)
• Ability to communicate complex technical risks to non-technical stakeholders

Preferred Qualifications:

• CISSP-ISSEP or advanced cybersecurity certification
• Experience working in AWS classified or Gov Cloud environments
• Familiarity with Dev Sec Ops  pipelines and CI/CD security integration
• Experience with container security (Docker, Kubernetes)
• Knowledge of Zero Trust Architecture (ZTA)
• Experience with compliance-as-code and automation tools

Physical Demands:

The physical demands described here are representative of those that must be met by an employee to successfully perform the essential functions of this position. Reasonable accommodations may be made to enable individuals with disabilities to perform these functions.

• Remain in a stationary position for extended periods of time.
• Operate a computer, keyboard, and other office equipment using hands and fingers.
• Communicate effectively in person, over the phone, and through electronic means.
• Occasionally move about the office to access files, office equipment, and meeting spaces.
• Lift and/or move up to 15 pounds as needed.
• Maintain specific vision abilities, including close vision and the ability to adjust focus.

Work Environment:

This position is performed within a secure, classified workspace. Employees must comply with all applicable security protocols and access control procedures, including restrictions on personal electronic devices and the handling of sensitive information.

Actual salary will be based on a variety of factors, including location, experience, skill set, performance, licensure and certification, and business needs. The range for this position in other geographic locations may differ. Certain positions may also be eligible for variable incentive compensation, such as bonuses or commissions, that is not included in the base salary.

Estimated Pay Range

$14,000 - $155,000 USD

The Perks:

• Comprehensive medical, dental and vision plans for you and your dependents
• 401(k) Retirement Plan with Employer Match, 529 College Savings Plan, Health Savings Account, Life Insurance, and Long-Term Disability
• Competitive Compensation
• Training and development…