• Security Engineer

    Leidos (Lorton, VA)
    **Description** The Digital Modernization Sector at Leidos currently has an opening for a Security Engineer to work in our Lorton, VA office. This is an exciting ... to deliver cybersecurity and information assurance services. **Primary Responsibilities** The Security Engineer - Linux / Tenable Compliance is responsible for… more
    Leidos (12/11/25)
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  • Physical Security Engineer 4

    M. C. Dean (Chantilly, VA)
    …leaders in electrical, engineering, and cybersecurity industries. We are seeking a **Physical Security Engineer 4** to join our ** Security and Electronic ... With over 7,000 employees, our capabilities span electrical, electronic security , telecommunications, life safety, automation and controls, audiovisual, and IT… more
    M. C. Dean (10/23/25)
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  • Staff Information Security Engineer

    Zscaler (Mclean, VA)
    …change control processes within the SCIF **Minimum Qualifications** + US citizenship and active US Top Secret ( TS ) clearance (must be maintained) + 5+ years ... agility with a cloud-first strategy. We are looking for a Staff Information Security Engineer who will operate as a vulnerability management engineer inside… more
    Zscaler (01/10/26)
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  • Lead Security Engineer

    Foxhole Technology, Inc (Alexandria, VA)
    **Overview** **Job Title: Lead Security Engineer ** **Clearance: Top Secret w/SCI eligibility** **Location: Alexandria, VA** **Start: Based on Contract ... the organization and around the world **.** We are seeking a mission-focused Lead Security Engineer to support a Department of War (DoW) cybersecurity program.… more
    Foxhole Technology, Inc (12/19/25)
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  • Cyber Network Security Engineer

    CACI International (Chantilly, VA)
    Cyber Network Security Engineer Job Category: Engineering Time Type: Full time Minimum Clearance Required to Start: TS /SCI with Polygraph Employee Type: ... Travel: None * * * **The Opportunity:** **CACI is seeking a talented Cyber Network Security Engineer to join our team in Chantilly, VA. This role will**… more
    CACI International (12/02/25)
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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.** This role supports a ... professionals with strong technical expertise and a desire to shape the security infrastructure of the future. **Responsibilities include but are not limited to:**… more
    ManTech (12/13/25)
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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...Linux operating systems in enterprise environments. **Qualifications:** _Required:_ + Top Secret /SCI clearance + Bachelor's degree in… more
    CACI International (12/24/25)
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  • Principal Cyber Security Engineer

    ManTech (Chantilly, VA)
    **MANTECH** seeks a motivated, career and customer-oriented **Principal Cyber Security Engineer ** to join our team in **Chantilly, VA.** This role supports the ... alongside cyber experts to develop solutions that enhance network compliance and security posture across DoD systems. **Responsibilities include but are not limited… more
    ManTech (12/13/25)
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  • Senior Information Systems Security

    Amentum (Warrenton, VA)
    …program is to support, operate, and maintain the Distributed Continuity Integrated Network - Top Secret Enterprise Services (DCIN- TS ES) which is a ... The duties and responsibilities of the **Senior Information System Security Engineer (ISSE)** include, but are not...at multiple classifications levels. **Requirements:** + Must have active Top - Secret clearance with SCI or TS more
    Amentum (01/09/26)
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  • Senior Principal Cyber Security

    ManTech (Chantilly, VA)
    **MANTECH** seeks a motivated, career and customer-oriented **Senior Principal Cyber Security Engineer ** to join our team in **Chantilly, VA.** This role ... **Responsibilities include but are not limited to:** + You will engineer , design, implement, integrate, and sustain Comply-to-Connect (C2C) deployment support to… more
    ManTech (12/13/25)
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