• Senior Information System Security Officer…

    Leidos (Annapolis Junction, MD)
    …12 years of relevant experience. Additional experience may be substituted for a degree. + TS / SCI with polygraph security clearance. + Must have at least 10 years ... of experience as ISSO working independently, and/or on teams maintaining secure information system operations in isolated, connected and standalone environments.… more
    Leidos (12/06/25)
    - Related Jobs
  • Senior OCO Product Manager

    ARSIEM (Columbia, MD)
    …exploitation (eg, Python, C/C++, Assembly). Clearance Requirement : This position requires an active TS / SCI with a polygraph. You must be a US citizen for ... OCO Product Manager with a strong background in Offensive Cyber Operations , vulnerability exploitation, advanced persistent threats (APT), hands-on experience with… more
    ARSIEM (11/27/25)
    - Related Jobs
  • Splunk Security Engineer

    Leidos (Suitland, MD)
    …to new teams targeted for integration. **What You'll Bring** **Required:** + Active DoD TS / SCI clearance. + Bachelor's degree and 8+ or 12+ years of experience ... scalable automation, your work will shape the response and resilience of national operations . **_This posting is for an opportunity ranging in years of experience.… more
    Leidos (11/11/25)
    - Related Jobs
  • Senior Systems Administrator 10k sign on bonus

    Leidos (Annapolis Junction, MD)
    …/ SSP, STE/STN support. + **Clearance Required: Must have an active TS / SCI with Polygraph** **Desired Qualifications:** + Puppet, Ansible, FreeIPA, RedHat ... team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence… more
    Leidos (11/15/25)
    - Related Jobs
  • Offensive Cyber Analyst / Programmer

    Lockheed Martin (Hanover, MD)
    …security clearance, you must be a US Citizen for consideration\. **Clearance Level:** TS / SCI w/Poly **Other Important Information You Should Know** ... leveraging their knowledge of cybersecurity and computer networks to conduct operations and gather critical intelligence\. We are hiring for a variety of roles… more
    Lockheed Martin (11/06/25)
    - Related Jobs
  • COMSEC Support Specialist - Active Secret

    ENS Solutions (MD)
    …secure communications in SIPRNet and other mission-critical environments. Requirements + Active Secret clearance (with TS / SCI eligibility preferred). + 3-5 ... + Serve as a subject matter expert on KMI operations , including user registration, key generation, and key transfer...users and assist in ensuring compliance with physical and information security regulations. + Coordinate with Information more
    ENS Solutions (10/31/25)
    - Related Jobs
  • Systems Network Administrator (SNA-0)

    Leidos (Laurel, MD)
    …is required. + **Security Clearance Requirement** : Candidates must possess an active ** TS / SCI ** with **Polygraph** to be considered for this role. + ... team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence… more
    Leidos (09/20/25)
    - Related Jobs
  • MPO Business Development Manager

    Amentum (Fort Meade, MD)
    …degree in business or subject matter relevant to customer's mission required. + TS / SCI clearance, preferably with polygraph, at the time of application. + ... and knowledge of the business environment around the customer's operations support services, understanding of the business cycles of this capability set.… more
    Amentum (12/10/25)
    - Related Jobs
  • Cyber Security Engineer (SME)

    Leidos (Bethesda, MD)
    …contemplated by the level + **To be considered must have an active TS / SCI with polygraph security clearance** **Preferred Qualifications** + Experience with ... team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence… more
    Leidos (11/28/25)
    - Related Jobs
  • 337 - Senior Linux Systems Administrator

    ARSIEM (Annapolis Junction, MD)
    …Original Posting Date: 2025-10-29 Clearance Requirement: This position requires an active TS / SCI with a polygraph. You must be a US Citizen ... software, systems, and network engineering services to support Integrated Discovery Operations (IDO). You will lead, evolve, and maintain a dynamic, modern… more
    ARSIEM (10/30/25)
    - Related Jobs