• Senior Linux Administrator

    RTX Corporation (Mckinney, TX)
    …world. **What You Will Do:** + Administer, patch, and harden Red Hat Enterprise Linux (RHEL) and related distributions. + Work with Cyber to maintain and monitor ... system availability, performance, and logs using enterprise tools. + Configure and maintain STIG-compliant systems in accordance with DoD security standards. + Automate system tasks using Ansible and Bash shell scripting + Troubleshoot hardware and software… more
    RTX Corporation (11/21/25)
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  • Linux Systems Administrator

    L3Harris (Greenville, TX)
    …land, sea and cyber domains in the interest of national security. Job Title: Linux System Administrator Job Code: 29921 Job Location: Greenville, TX Schedule: ... 9/80 Job Description: L3Harris is seeking a Linux Systems Administrator to support Mission System...writing of work instructions and build manuals + Support senior staff on documenting operational processes, configurations, and diagrams… more
    L3Harris (10/17/25)
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  • Senior Hadoop Administrator

    Publicis Groupe (Irving, TX)
    **Overview** For this role, we are seeking a ** Senior Big Data Administrator ** with a balance of skills in database design, physical implementation, and ... administration, with at least 3 years focused on Cloudera. + Strong Linux system administration and shell scripting skills. + Hands-on experience with Cloudera… more
    Publicis Groupe (11/08/25)
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  • Senior Cloud Database Administrator

    Publicis Groupe (Irving, TX)
    **Overview** For this role, we are seeking a Senior Cloud Database Administrator with a balance of skills in database design, physical implementation, and ... + Adhering to SDLC, Change Management, and troubleshooting procedures. + Solid Unix/ Linux and shell scripting skills. + Excellent written and verbal communication.… more
    Publicis Groupe (11/08/25)
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  • Senior Endpoint Security Engineer

    AIG (Dallas, TX)
    …reimagining the way we help customers to manage risk. Join us as a Senior Endpoint Security Engineer to play your part in that transformation. It's an opportunity ... the organization. How you will create an impact The Senior Endpoint Security Engineer will be part of AIG's...with Infrastructure hardening and Security settings for Windows and Linux . + Intermediate to Expert level knowledge on Windows… more
    AIG (08/27/25)
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  • Systems Engineer Senior - Level 3

    Lockheed Martin (Fort Worth, TX)
    **Description:** You will be the Systems Engineer Senior for the F\-35 Mission Planning Environment \(MPE\) Hardware and Software Integration Team \(HSI\) in Fort ... corrections\. **What You Will Be Doing** As the Systems Engineer Senior your responsibilities will include: * Identifying/troubleshooting MPE system anomalies and… more
    Lockheed Martin (10/31/25)
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  • Cloud Security Threat Modeler Senior

    Citigroup (Irving, TX)
    …frameworks. + Working knowledge of **Operating Systems** (eg, **Windows** , ** Linux ** ) and their hardening best practices. + Familiarity with **Development ... Certified: Azure Solutions Architect Expert + Microsoft Certified: Azure Administrator Associate + CompTIA Cloud **Cybersecurity Certifications (Foundational Level):**… more
    Citigroup (11/16/25)
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  • Lead Application Reliability Engineer

    Citigroup (Irving, TX)
    …support and maintenance of a robust technology stack including middleware, databases, Linux , and AWS EKS, all within a strictly regulated and change-controlled ... escalating and reporting control issues with transparency. + Present technical work to senior stakeholders, the team, and other technical teams. + Mentor and train… more
    Citigroup (11/14/25)
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  • Lead - Enterprise Compute Devices

    Toyota (Plano, TX)
    …performance, and security of all enterprise compute devices. Reporting to the Senior Manager - Compute Device Engineering, Compliance & Global Collaboration, the ... maintain device standards, including configurations for operating systems (iOS, Windows, Linux , etc.), browsers, and group policies to ensure optimal performance and… more
    Toyota (11/13/25)
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  • Information System Security Engineer

    CAE USA INC (Arlington, TX)
    …and technical volumes. + Assist in Cost Account Management. + High level system administrator skills under Windows or Linux (prefer both). + Experience with ... + Extensive experience with hardware/software platforms to include MS Windows, Linux , UNIX. + Military service or military environment familiarity, customs/protocol… more
    CAE USA INC (10/24/25)
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