• Information System Security Engineer (ISSE)

    Assertive Professionals (Chantilly, VA)
    …Include: Providing support to design, develop, and maintain the client's systems compliance with ICD 503 requirements. This also includes advising and ... assisting the client with: security and network accreditations; providing the client with a working understanding...in several of the following areas: + Securing mission systems through the ICD 503 process for security risk… more
    Assertive Professionals (01/07/26)
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  • Sr IT Security Advisor

    Sedgwick (Richmond, VA)
    …of security measures to protect company data, networks, and computer systems . To focus on executing security fundamentals for threat detection, investigation, ... implements and monitors security measures for the protection of computer systems , networks and information. + Identifies and defines system security requirements.… more
    Sedgwick (12/23/25)
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  • Senior Maintenance Technician (S)

    SimIS Inc. (Dahlgren, VA)
    …preferably military systems + Advanced knowledge of digital electronics, computer systems , and network equipment + Experience with AEGIS combat systems ... and display systems + Knowledge of COTS and LAN-based system administration + Understanding of test equipment operation and calibration procedures + Strong… more
    SimIS Inc. (01/09/26)
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  • Linux System Administrator

    Nightwing (Arlington, VA)
    …technologies and equipment in the lab environment. - Providing ongoing systems administration , technical support, upgrades, patching and troubleshooting ... Network (TEN) Lab Manager with experience in Linux Systems Administrator to support the design, development, and deployment...or HS Diploma and 7+ years lab management or systems administration experience. **Desired Certifications:** - DoD… more
    Nightwing (11/26/25)
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  • Security Engineering Lead

    Tyto Athene (Ashburn, VA)
    …threats. **Qualifications** **Required:** + 3+ years of experience in security systems administration , engineering, and support. + CompTIA A+, Security+, ... systems and tools. + Install, configure, and support network security platforms, including: + Layer 2/Layer 3 ...+ Firewalls, IDS/IPS, VPN solutions, WAFs, and content filtering systems + NetFlow analysis and network monitoring… more
    Tyto Athene (11/01/25)
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  • Secure Wireless Engineer

    General Dynamics Information Technology (Springfield, VA)
    …connectivity issues related to firewall/VPN/SSL infrastructures. Responsible for evaluating current network security systems . HOW A CYBER WIRELESS SECURITY ... and in-depth experience with Wireless Networks + Areas of information systems security; including policy; security standards; network ; application; database and… more
    General Dynamics Information Technology (10/18/25)
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  • Junior Computer Support Technician

    Leidos (Reston, VA)
    …2PM-10:30PM Primary Responsibilities 1) Performs the integration of new COTS/GOTS systems ( network equipment, servers, workstations, etc) into the production ... (SEP) is seeking a Computer Support Analyst for the Center for Information Systems Security (CISS) program. This is a unique role which offers opportunities for… more
    Leidos (12/29/25)
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  • Principal / Sr. Principal DevOps Software Engineer

    Northrop Grumman (Chantilly, VA)
    …Northrop Grumman, our employees have incredible opportunities to work on revolutionary systems that impact people's lives around the world today, and for generations ... keep building on our wide portfolio of secure, affordable, integrated, and multi-domain systems and technologies that fuel those missions. By joining in our shared… more
    Northrop Grumman (12/04/25)
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  • Mission IT Operator

    CACI International (Springfield, VA)
    …with IT infrastructure including user systems , servers, storage, and network connectivity. - Provides system administration for assigned infrastructure and ... - Responsible for resolving IT hardware and software infrastructure (servers, network , security, etc.) issues using systems - Analysis techniques… more
    CACI International (01/07/26)
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  • Action Officer

    Nightwing (Arlington, VA)
    …campaigns, tactics, techniques, and procedures - Familiar with basic system and network administration , traffic analysis techniques, Computer Network Defense ... network security monitoring and/or security operations analysis, system administration , operating system hardening, cyber hygiene techniques, and cybersecurity… more
    Nightwing (01/06/26)
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