• Sr. ISSE TS/SCI Poly

    Leidos (Annapolis Junction, MD)
    **Description** **Leidos** has a new and exciting opportunity for a **Sr. ISSE ** in our **National Security Sector's (NSS) Cyber & Analytics Business Area (CABA)** . ... Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management. At **Leidos** , we offer **competitive… more
    Leidos (11/15/25)
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  • Information Systems Security Engineer Level 3…

    ARSIEM (Columbia, MD)
    …for two (2) years of experience. + Four (4) years of additional ISSE experience may be substituted for a Bachelor's degree. + Experience supporting security ... authorization activities in compliance with: + NSA/CSS Information System Certification and Accreditation Process (NISCAP) + DoD Risk Management Framework (RMF) + NIST Risk Management Framework (RMF) + NSA/CSS business processes for security engineering.… more
    ARSIEM (11/01/25)
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  • Sr. Specialist, ISSE - Network Security

    L3Harris (Greenville, TX)
    …and cyber domains in the interest of national security. Job Title: Sr. Specialist, ISSE - Network Security Job Code : 30043 Job Location: Greenville, TX Schedule: ... 9/80 Job Description: L3Harris is seeking an experienced Information System Security professional with particular technical experience in network appliances such as routers, switches, and firewalls that would work across multiple product lines within L3Harris'… more
    L3Harris (10/26/25)
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  • Senior Information Systems Security Engineer…

    Parsons Corporation (Colorado Springs, CO)
    …need your help. Our team is looking for a **Senior Information Systems Security Engineer ( ISSE )** . In this role you will get to focus on the cybersecurity aspects ... of system design to deal with cyber-related disruptions, minimizing misuse and malicious behavior, while supporting Department of Defense (DoD) agencies, such as HQ Air Force, Office of the Secretary of Defense (OSD) and Military Compartments efforts. The… more
    Parsons Corporation (10/11/25)
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  • Information System Security Engineer ( ISSE

    Insight Global (Sterling Heights, MI)
    …Insight Global is looking for a Information System Security Engineer for one of our largest defense clients out of Warren, MI in a hybrid position 3 days a week ... onsite. This person will establish and satisfy complex system wide information security requirements based upon analysis of user, policy, regulatory and resource demands. They will support customers in the development and implementation of doctrine and… more
    Insight Global (12/04/25)
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  • Cybersecurity Engineer - ISSE Cleared

    Insight Global (Lincoln, MA)
    …A federal client is seeking a Cyber Security Engineer support all aspects of acquisition, system engineering reviews, and milestone entrance/exit criteria in ... Lexington, MA. Responsibilities include: Capturing and refining information security requirements and ensuring that the requirements are effectively integrated into information technology component products and information systems through purposeful security… more
    Insight Global (11/26/25)
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  • Information System Security Engineer ( ISSE

    GCyber (Alexandria, VA)
    …and Experience: + Active DoD Secret Clearance + Bachelor's with 8+ years of cybersecurity experience (or commensurate experience) + 6+ years of experience supporting ... GCyber is seeking an Information System Security Engineer, to support a government customer. The ISSO will be responsible for maintaining compliance, ensuring operational security posture, and coordinating security documentation and activities across multiple… more
    GCyber (11/04/25)
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  • ISSE with DoD Top Secret Clearance

    Watershed Security (Norfolk, VA)
    …Watershed Security is seeking a highly skilled and motivated Information Systems Security Engineer to join our team supporting the Naval Information Warfare - ... Atlantic (NIWC-Atl) program. You'll be key in ensuring support, assessment, and authorization (A&A), and cyber operations support including support for life-cycle management policy, guidance, oversight, and direction for a cyber analytics system. Key… more
    Watershed Security (10/31/25)
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  • Senior Information Systems Security Engineer…

    Innovative Management & Technology Services (Clarksburg, WV)
    …As a Senior Information Security Specialist, you will play a critical role in safeguarding federal or state information systems and ensuring they remain compliant, ... secure, and resilient across all phases of their lifecycle. Your work will directly support mission-driven initiatives that protect sensitive government data, improve operational continuity, and reduce cyber risk in Agile, fast-paced environments. You will… more
    Innovative Management & Technology Services (10/29/25)
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  • Information System Security Engineer

    CAE USA INC (Arlington, TX)
    …and having fun! Summary CAE is seeking information System Security Engineers ( ISSE ) for providing technical expertise and support to CAE programs and Cybersecurity ... hired for the position will work in-plant in Arlington Tx. The ISSE 's priority is responsibility for management, implementation and testing of our Program's… more
    CAE USA INC (12/17/25)
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