Information Assurance Security Engineer (ISSE)

Start Date: Immediate JHNA, CTSi, and EXPANSIA have come together to form a Defense Technology platform named Aether Aerospace focused on delivering high-impact technologies, technology-enabled services and advanced manufacturing solutions to the U.S. Department of Defense and related national security customers. Backed by Falfurrias Management Partners, the platform brings together deep domain expertise across Army, Navy, and Air Force and Space Force programs, digital engineering, systems integration, and specialized manufacturing capabilities. The combined organization operates as a multi-entity aerospace and defense technology and tech-enabled services and manufacturing enterprise positioned for scalable growth, operational excellence, and long-term value creation OVERVIEW Full-time/Permanent Employee Location: Remote, preferred Boston, MA or Dayton, OH As an Information Assurance/Security Engineer III, you will provide technical and programmatic support for network and information security systems, ensuring compliance with federal laws and regulations. You will design, develop, and implement security requirements within business processes, prepare security documentation, conduct risk and vulnerability assessments, and support certification and accreditation efforts. Your role includes securing system configurations, integrating security tools, conducting audits, developing risk mitigation strategies, and recommending enhancements to improve security posture. You will work independently under general direction to provide technical solutions to complex security challenges. RESPONSIBILTIES * Assist in developing and integrating security requirements within business processes * Support certification and accreditation efforts, ensuring compliance with frameworks such as DIACAP, NIACAP, and NIST SP 800-37 * Conduct security assessments and vulnerability analyses to identify and mitigate risks * Develop and complete system security plans and contingency plans * Perform security testing and compliance verification for network and system configurations * Implement security tools, monitor system integrity, and support incident response efforts * Analyze security policies and recommend enhancements to improve compliance and risk management * Conduct security audits and provide solutions to reduce identified risks * Assist in evaluating, developing, and enhancing security policies, tools, and risk mitigation strategies * Provide information assurance support for security architecture development and implementation * Provide technical support to operational strategies aligned within your program and initiatives that optimize processes, enhance productivity, and ensure quality across all program functions * Ensure 100% of planned hours are worked and recorded * Identify and forward to your leadership any opportunities that could lead to growth within your work are