• Staff Information Security Engineer

    Zscaler (Mclean, VA)
    …and agility with a cloud-first strategy. We are looking for a Staff Information Security Engineer who will operate as a vulnerability management engineer ... cybersecurity. Our Engineering team built the world's largest cloud security platform from the ground up, and we keep...SCIF, with no access to external networks or corporate systems , and adhering to one-way diode transfer protocols.** Reporting… more
    Zscaler (10/11/25)
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  • Network Security Engineer III

    TekSynap (Virginia Beach, VA)
    …and management of firewalls and IDS/IPS technologies. **Overview** We are seeking a Network Security Engineer III to join our team supporting Department of Navy. ... across hardware, software, and network components. + Conduct STIG implementation to ensure systems meet DoD security compliance standards. + Configure and manage… more
    TekSynap (12/30/25)
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  • Principal Cyber Security Engineer

    ManTech (Chantilly, VA)
    systems , and virtual systems + Knowledge of Windows and Linux systems , general operating system security practices, TCP/IP networking, 802.1x, and ... **MANTECH** seeks a motivated, career and customer-oriented **Principal Cyber Security Engineer ** to join our team in **Chantilly, VA.** This role supports the… more
    ManTech (12/13/25)
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  • Lead Security Engineer

    Foxhole Technology, Inc (Leesburg, VA)
    **Overview** **Job Title: Lead Security Engineer ** **Clearance: Secret** **Location: Leesburg, VA -Hybrid (Onsite 3 days per week)** Foxhole Technology provides ... services and solutions that solve operational gaps, operate critical systems , and protect and secure the enterprise - across...the world **.** We are seeking a mission-focused Lead Security Engineer to support a Department of… more
    Foxhole Technology, Inc (12/19/25)
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  • Cyber Security Engineer (Elastic…

    CACI International (Hampton, VA)
    Cyber Security Engineer (Elastic SME) Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: TS/SCI Employee Type: ... **The Opportunity:** Join our dynamic team as a Cyber Security Engineer at the DCGS Management Center...of our Elasticsearch cluster, ensuring the health, status, and security monitoring of our systems . If you… more
    CACI International (12/24/25)
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  • Senior Principal Cyber Security

    ManTech (Chantilly, VA)
    systems , and virtual systems + Knowledge of Windows and Linux systems , general operating system security practices, TCP/IP networking, 802.1x, and ... **MANTECH** seeks a motivated, career and customer-oriented **Senior Principal Cyber Security Engineer ** to join our team in **Chantilly, VA.** This role… more
    ManTech (12/13/25)
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  • Senior Cyber Security Engineer

    ManTech (Chantilly, VA)
    **MANTECH** seeks a motivated, career and customer-oriented **Senior Cyber Security Engineer ** to join our team in **Chantilly, VA** . Senior Cyber Security ... services + Maintain infrastructure in cloud or virtualized environments + Perform Linux-based system upgrades and patches + Engineer and deploy a Multi-Factor… more
    ManTech (12/11/25)
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  • Senior Systems Security

    EPS Corporation (Dahlgren, VA)
    Senior Systems Security Engineer -...risk analysis + SCAP scanning and STIG implementation + System accreditation and security audits + Malware ... in your status update to LinkedIn. Job Title Senior Systems Security Engineer Location Dahlgren,...as well as hands-on expertise with TEMPEST testing and system audits. Requirements + ACTIVE TOP SECRET + Six… more
    EPS Corporation (11/13/25)
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  • Information Systems Security

    BAE Systems (Sterling, VA)
    …incentives may be available based on position level and/or job specifics. **Information Systems Security Engineer (Senior)- ISSE** **115935BR** EEO Career ... **Required Education, Experience, & Skills** We are actively seeking Cyber Security Systems Engineers with a minimum of 6 years' experience. This opportunity… more
    BAE Systems (11/21/25)
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  • Senior Information System Security

    ManTech (Chantilly, VA)
    **MANTECH** seek a motivated, career and customer-oriented **Senior Information System Security Engineer ** to join our team in **Washington, DC, Quantico, ... + Hold at least one of the following certifications: Certified Information Systems Security Professional (CISSP) (or Associate), CompTIA Advanced Security more
    ManTech (01/01/26)
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