• Cloud Systems Administrator IV

    Criterion Systems (Reston, VA)
    …response times to maintain operating efficiency. + Performs systems security administration functions, including creating user profiles and accounts. + Provides Tier ... Tier 2 problem identification, diagnosis and resolution of problems. + Provision/harden Linux operating systems. + Other duties may include setting up administrator… more
    Criterion Systems (09/17/25)
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  • Infrastructure Senior Engineer, Senior Vice…

    Citigroup (Jersey City, NJ)
    …Tuning, HPC SME will be responsible for ensuring best in breed Linux and surrounding technology architecture and engineering in alignment with business requirements. ... **Interconnects** , **HW** and related technologies: **The Technologies:** + **Compute** ( Linux , CoreOS, Tuning, kernel bypass technologies, core dump analysis) +… more
    Citigroup (09/10/25)
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  • Sr. Principal System Administrator

    RTX Corporation (Plano, TX)
    …IT infrastructure problems. **What You Will Do: ** + Provide IT systems administration in a heterogeneous Microsoft Windows and Redhat Enterprise Linux ... are eligible for a security clearance. + Experience with Linux and Windows environments. + Experience with data RAID,...NetBackup + High Performance Computing (HPC) experience in a Linux environment **What We Offer:** + Our values drive… more
    RTX Corporation (09/09/25)
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  • Senior Platform Engineer/ Senior Software Engineer…

    RTX Corporation (Marlborough, MA)
    ….Net, bash, etc. + Experience with RedHat IDM + Experience with RedHat Linux system administration + Experience with Collaborator or other source code ... of real-time embedded software, application software, and tools that run on a Linux operating system. + Maintenance and enhancement of the tooling infrastructure. +… more
    RTX Corporation (09/04/25)
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  • Principal Systems Administrator

    RTX Corporation (Tucson, AZ)
    …more secure world. **What You Will Do** : + Provide IT systems administration in a heterogeneous Microsoft Windows and Redhat Enterprise Linux environment. ... + Experience with Windows Server internals or Linux fundamentals to include DNS, DHCP, AD, and server...for a security clearance. + Experience with Windows and/or Linux **Qualifications We Prefer:** + Experience with Containerization Technologies… more
    RTX Corporation (09/03/25)
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  • Journeyman Software Developer

    Precise Systems, Inc. (Dahlgren, VA)
    …and units + Reverse engineering complex Linux C++/Java applications + Linux networking, system administration , scripting, and configuration and management + ... in a Scrum environment + Working knowledge of the Linux operating environment including, but not limited to, the...team-oriented work environment + Practical experience with C++ and Linux . Must be able to obtain and maintain a… more
    Precise Systems, Inc. (08/29/25)
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  • Mid-Level Software Developer (C++)

    Rite-Solutions Inc. (Newport, RI)
    …Docker, Podman, or Kubernetes + Application performance optimization across all tiers + Linux system administration as part of software development + Experience ... create, and modify applications using programming languages such as C++ ( Linux ) and Java, deployment technologies such as Kickstart, Containers and Virtual… more
    Rite-Solutions Inc. (08/29/25)
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  • HPC Cyberinfrastructure Engineer

    University of Maine System (Orono, ME)
    …or relevant discipline. + At least one year of experience performing Linux system administration duties. + Familiarity with cluster configuration and ... be a US Person. Preferred: + Experience building, configuring, and administering Linux clusters. + Experience with parallel file systems (eg Lustre, GPFS, BeeGFS,… more
    University of Maine System (08/28/25)
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  • Senior Endpoint Security Engineer

    AIG (Dallas, TX)
    …the following functions: + Perform Security related tasks, including day-to-day administration , fine tuning to reduce false positives and improve effectiveness and ... and expertise with Infrastructure hardening and Security settings for Windows and Linux . + Intermediate to Expert level knowledge on Windows & Active Directory,… more
    AIG (08/27/25)
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  • Cybersecurity Engineer

    AIG (Dallas, TX)
    …business security requirements. Perform Security related tasks, including day-to-day administration , capacity (sizing according to the amount of storage) planning, ... and expertise with Infrastructure hardening and Security settings for Windows and Linux . + Intermediate to Expert level knowledge on Windows & Active Directory,… more
    AIG (08/27/25)
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