• Tier 3 Linux Engineer

    CACI International (Chantilly, VA)
    Tier 3 Linux Engineer Job..._Required:_ * An Active TS/SCI Clearance with Polygraph. * Security + or DoD 8570 IAT Level II Certification or be ... Opportunity:** CACI is seeking a highly skilled and experienced Tier 3 Linux Engineer to...managing work tasks via ServiceNow * Knowledge of cloud-based security best practices and compliance requirements. * Experience with… more
    CACI International (08/03/25)
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  • Network Engineer Tier 3

    CACI International (Chantilly, VA)
    Network Engineer Tier 3 Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: TS/SCI with Polygraph Employee Type: ... ongoing basis. **Opportunity:** Team CACI is seeking a Senior Network Engineer to support an Intelligence Community customer's diverse network infrastructure,… more
    CACI International (07/26/25)
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  • Core/WAN Network Designer- Tier 3

    CACI International (Sterling, VA)
    CORE/WAN Network Designer- Tier 3 Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: TS/SCI Employee Type: Regular ... an Intelligence Community customer's CORE/wide-area (WAN), networks across multiple security domains. This position encompasses the design, implementation, and… more
    CACI International (07/26/25)
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  • Security Engineer (SecEng), SecOps…

    Amazon (Herndon, VA)
    …automation for our internal security customers * Participate in on-call rotation providing tier 3 + support for Security Operations * Develop and enhance ... offerings Key job responsibilities - You are an experienced engineer . You engage autonomously with product and system owners...focus in areas such as systems, network, and/or application security - 3 + years experience with… more
    Amazon (05/14/25)
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  • Information System Security Engineer

    Amentum (Warrenton, VA)
    …with a special concentration in managing Tenable Security Center and NESSUS. + Provide Tier 1, 2, and 3 maintenance support for deployed cyber security ... so, look no further. Amentum is seeking a **Senior Information System Security Engineer (ISSE)** to join our team of passionate individuals in **Warrenton, VA**… more
    Amentum (07/29/25)
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  • Information Systems Security

    CACI International (Chantilly, VA)
    Information Systems Security Engineer - ISSE Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: TS/SCI with Polygraph ... **The Opportunity:** CACI is searching for an Information Systems Security Engineer (ISSE) to support a worldwide...will be responsible for operations, future technologies, engineering and Tier 2/ 3 support, break/fix, and tech refresh… more
    CACI International (07/02/25)
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  • NMCC Information Systems Security

    TekSynap (Arlington, VA)
    …and risk management. + Security Tool Troubleshooting & Support: + Provide Tier 3 troubleshooting support for cybersecurity tools such as ACAS and HBSS/ESS. ... Assessment techniques. **Overview** We are seekinga highly skilled Information Systems Security Engineer (ISSE) to maintain and enhance the security posture… more
    TekSynap (06/18/25)
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  • Information Systems Security

    KaylaTek, Inc. (Arlington, VA)
    …analysis, and risk management. Security Tool Troubleshooting & Support o Provide Tier 3 troubleshooting support for cybersecurity tools such as ACAS and ... Summary Our Cybersecurity Team is seeking a highly skilled Information System Security Engineer (ISSE) to maintain and enhance the security posture of… more
    KaylaTek, Inc. (06/05/25)
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  • M365 Engineer ( Engineer Network…

    Huntington Ingalls Industries (Fairfax, VA)
    …base transitioning from a former cloud environment and legacy on-prem solutions . Provide Tier 3 support for advanced M365 and MS Purview-related issues and ... Employment Type: Full Time/Salaried/Exempt Anticipated Salary Range: $92,259.00 - $125,000.00 Security Clearance: Ability to Obtain Level of Experience: Mid Meet… more
    Huntington Ingalls Industries (05/30/25)
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  • Senior Network Security Engineer II

    Imagine One Technology & Management (Virginia Beach, VA)
    …performing as Privileged Users are required to have and maintain a final adjudicated Tier 5 security investigation with an IT level-1 designation in Joint ... Warfare Center Dahlgren Division (NSWCDD). We are looking for Senior Network Security Engineers to provide research and engineering services for Navy Surface… more
    Imagine One Technology & Management (06/03/25)
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