Senior Information System Security Engineer; ISSE) III

Position: Senior Information System Security Engineer (ISSE) III
Location: Lincoln

Senior Information System Security Engineer (ISSE) III – USAF Special Programs

Location: Hanscom Air Force Base, Bedford, MA
Employment Type: Full-Time | On-Site
Salary Range: $175,000–$200,000 Annually
Security Clearance: Active DoD Top Secret Required

Position Overview

Agile Edge Defense LLC (AED), a Service-Disabled Veteran-Owned Small Business (SDVOSB), is seeking an accomplished Senior Information System Security Engineer (ISSE) III to support mission-critical U.S. Air Force systems engineering, cybersecurity, and sustainment activities at Hanscom Air Force Base.

The successful candidate will serve as a senior cybersecurity engineering advisor, supporting the development, integration, accreditation, and sustainment of secure Department of Defense information systems.

This position offers the opportunity to work directly with government program leadership, system engineers, cybersecurity professionals, and acquisition stakeholders to protect sensitive mission capabilities throughout their operational lifecycle.

Key Responsibilities

• Provide senior-level information systems security engineering support throughout the DoD acquisition and systems engineering lifecycle.

• Develop, evaluate, and implement cybersecurity architectures, technical safeguards, and system security requirements.

• Support Risk Management Framework (RMF) activities, including security control selection, implementation, assessment, and authorization.

• Develop and maintain System Security Plans (SSPs), security assessment documentation, Plans of Action and Milestones (POA&Ms), and associated authorization artifacts.

• Conduct vulnerability assessments, security engineering analyses, and technical risk evaluations.

• Apply Defense Information Systems Agency Security Technical Implementation Guides (DISA STIGs), security configuration standards, and applicable DoD cybersecurity policies.

• Support system accreditation, Authorization to Operate (ATO) activities, continuous monitoring, and cybersecurity sustainment.

• Evaluate system architectures, interfaces, hardware, software, and infrastructure for cybersecurity compliance and operational risk.

• Coordinate with government Information System Security Managers (ISSMs), Information System Security Officers (ISSOs), engineers, and program managers.

• Review contractor technical deliverables and provide recommendations to improve cybersecurity posture.

• Support security engineering reviews, configuration management activities, and remediation planning.

• Prepare technical assessments, cybersecurity briefings, risk reports, and recommendations for government leadership.

Required Qualifications

• Bachelor's degree in Cybersecurity, Computer Science, Information Technology, Engineering, or a related technical discipline, or qualifying equivalent experience consistent with contractual requirements.

• Senior-level experience in information systems security engineering, cybersecurity architecture, or DoD cybersecurity program support.

• Demonstrated experience implementing and evaluating cybersecurity requirements for DoD information systems.

• Working knowledge of NIST SP 800-53, DoD RMF, DISA STIGs, and cybersecurity authorization processes.

• Experience developing or reviewing RMF authorization packages, system security documentation, and vulnerability remediation plans.

• Ability to assess technical security risks and recommend practical engineering solutions.

• Experience collaborating with multidisciplinary engineering, acquisition, and cybersecurity teams.

• Strong analytical, technical writing, communication, and stakeholder coordination skills.

• U.S. citizenship.

• Active DoD Top Secret security clearance.

Preferred Qualifications

• Previous USAF, AFLCMC, or EPASS experience.

• Experience supporting classified defense systems or…