Senior Information System Security Engineer (ISSE) III

Job DescriptionJob DescriptionSenior Information System Security Engineer (ISSE) III – USAF Special ProgramsLocation: 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 RequiredPosition OverviewAgileEdge 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 ResponsibilitiesProvide 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 QualificationsBachelor'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 QualificationsPrevious USAF, AFLCMC, or EPASS experience.Experience supporting classified defense systems or special access environments.Familiarity with eMASS, ACAS, SCAP, STIG Viewer, and other DoD cybersecurity assessment tools.Experience with security engineering across system development, integration, testing, and sustainment.DoD 8140-aligned cybersecurity qualifications appropriate to the assigned duties.CISSP, CASP+/SecurityX, or comparable advanced cybersecurity certification.Experience supporting government program offices, system authorization authorities, or acquisition leadership.Candidates must meet all applicable EPASS labor-category education, experience, certification, and security requirements.Compensation & BenefitsAt AgileEdge Defense, we recognize that exceptional cybersecurity professionals are essential to national defense. We invest in our team through competitive compensation, comprehensive benefits, and a collaborative environment where technical expertise directly influences mission success.Competitive Compensation: $175,000–$200,000 annually, commensurate with qualifications and experience.Comprehensive Healthcare: Competitive medical insurance options with 100% employer-paid dental and vision coverage.401(k) Retirement Plan: Company-sponsored retirement savings with employer contributions, subject to plan provisions.Generous Paid Leave: Minimum 15 days PTO, separate paid sick leave, and 11 paid federal holidays.Employer-Paid Life Insurance: 100% employer-paid life insurance.Enhanced Financial Protection: 100% employer-paid accident insurance with optional critical illness coverage.Comprehensive Wellness: 100% employer-paid telehealth services.Professional Development: Opportunities for continued education, certifications, and technical career advancement.Direct Access to Leadership: A collaborative, veteran-led organization where employee contributions are recognized and valued.About AgileEdge DefenseAgileEdge Defense LLC is a growing, veteran-led defense contractor specializing in cybersecurity, enterprise technology, systems engineering, acquisition support, and program management for the Department of Defense.As a Service-Disabled Veteran-Owned Small Business, we combine specialized technical expertise with responsive leadership and a commitment to supporting the professionals who deliver critical national defense capabilities.Our employees are trusted contributors to complex government missions, with opportunities to influence technical decisions and support the security and modernization of essential defense systems.Equal Opportunity Employer: AgileEdge Defense provides equal employment opportunities to all qualified applicants in accordance with applicable federal and state laws.