• Operational Technology (OT) Asset Visibility…

    Tetrad Digital Integrity LLC (Merrifield, VA)
    …Forescout, Armis Centrix, Splunk use and knowledge object development, Windows and Linux system administration, Database design and implementation. + Candidates ... is also responsible for continuing development and curation of proprietary database system managing asset details of proprietary systems leveraged by automation… more
    Tetrad Digital Integrity LLC (09/12/25)
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  • System Engineer (TS/SCI)- Senior or Mid…

    Vexterra Group (Bethesda, MD)
    …to Microsoft Certified Solutions Expert (MCSE) Certification or MCSA (Microsoft Certified System Administrator ) + Experience with SAN or network storage setup ... Job Description: Vexterra is looking to fill a Windows Systems Engineer and Administrator position within the Analysis Solutions Division (ASD) to support the… more
    Vexterra Group (07/15/25)
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  • Systems Engineer L3

    NTT America, Inc. (Salt Lake City, UT)
    …related experience. **REQUIRED EXPERIENCE** + Minimum 5-7 years of experience as a Linux or Windows Systems Administrator /Engineer in an Enterprise Data ... and optimize enterprise storage (SAN, NAS), and backup solutions. + Monitor system performance, security , and availability; proactively identify and address… more
    NTT America, Inc. (09/27/25)
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  • Network Systems Engineer - TS/SCI w/Poly

    Parsons Corporation (Mclean, VA)
    …as Wireshark and system monitoring tools. + Familiarity with secure communications systems , system security principles, and network security ... + Support the configuration, management, and troubleshooting of encryptors, secure communication systems , and system -level security protocols. + Perform… more
    Parsons Corporation (09/09/25)
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  • Senior Software/ System Architect

    TISTA Science and Technology (Austin, TX)
    Overview Are you a Senior Software/ System Architect who would like to have a positive impact for millions of people? If so, we may have an opportunity for you! TISTA ... VMs, VNets, Storage, Azure AD, and App Services (Azure). + Automate system deployment, configuration, patching, and monitoring using Ansible, SSM, Azure Automation,… more
    TISTA Science and Technology (09/05/25)
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  • Mid-Senior Network Engineer

    Infinity Systems Engineering (Alexandria, VA)
    …and Cisco switches. + Perform systems administration on Windows and Linux platforms (updates, security , troubleshooting, management). + Maintain secure high ... with us! Job Summary: We are seeking a skilled Systems Administrator /Network Engineer to join our mission-driven...plus) + Proficient in Linux and Windows system administration + Active CompTIA Security + CE… more
    Infinity Systems Engineering (09/30/25)
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  • Senior UNIX System Engineer

    TekSynap (Radford, VA)
    …via SOPs. **REQUIRED QUALIFICATIONS** **Experience** + Five (5) years as a UNIX Systems Administrator or IT Engineer, including task automation. + Three (3) ... maintain, and improve technical instructions, operating procedures, and policies. + Perform system hardening and report on security and operational status. +… more
    TekSynap (07/26/25)
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  • Senior Lead Cloud Security Threat Modeler

    Citigroup (Irving, TX)
    …Analyst (GCIA), GIAC Open Source Intelligence (GOSI) + ISC2 Certified Information Systems Security Professional (CISSP) + CompTIA CASP+, CompTIA PenTest+ ... enable growth and progress together. **Overview of Chief Information Security Office (CISO):** The **Chief Information Security ..., and **network segmentation** . + Mastery of **Operating Systems ** (eg, **Windows** , ** Linux ** ) and… more
    Citigroup (09/18/25)
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  • UNIX Systems Engineer

    GovCIO (Concord, NH)
    …waived for 30 days after project join date. + 5+ yrs experience as a Unix Systems Administrator or IT Engineer with experience in automating assigned tasks. + 3+ ... position. **Responsibilities** This position is for a Senior UNIX System Engineer for a mixed and growing environment of...yrs experience in patch management with understanding how toapply security updates to systems via YUM and… more
    GovCIO (09/24/25)
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  • Cloud Security Threat Modeler Senior…

    Citigroup (Irving, TX)
    …a **Cybersecurity** role. + Proven experience with **Jira** or other similar ticketing systems . + Strong understanding of security best practices related to ... vulnerabilities using **CWE** or **OWASP** frameworks. + Working knowledge of **Operating Systems ** (eg, **Windows** , ** Linux ** ) and their hardening best… more
    Citigroup (09/23/25)
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