• Senior Information Security Engineer…

    Lumen (Annapolis, MD)
    … Detection and Response (NDR). + Minimum 2 years of experience in Linux system administration, virtualization, configuration, and support within a security ... Responsibilities** + Design, deploy, troubleshoot, and support technologies that monitor network and host systems -both on-premises and in cloud environments-for… more
    Lumen (11/15/25)
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  • Senior Cryptographic Software Engineer

    ManTech (Linthicum Heights, MD)
    …script, and ensure secure development practices within Linux -based operating systems . + Design and assess secure network communications by applying ... **MANTECH** seeks a motivated, career and customer-oriented ** Senior Cryptographic Software Engineer** to join our team...or equivalent. + Certifications related to cryptographic technologies or Linux systems , such as Linux +… more
    ManTech (11/09/25)
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  • Information Systems Security Officer (ISSO)

    Systems Technologies, Inc. (Hanover, MD)
    … SYSTEMS SECURITY OFFICER (ISSO) The company is seeking junior, mid-level, and senior Information Systems Security Officers (ISSO) to provide SETA support in ... duties and responsibilities. Implement and enforce all DoD Information Systems and Platform IT system cybersecurity policies...code analysis, Pen Testing, and Scanning Results. + Review network , data flow, org charts and etc for potential… more
    Systems Technologies, Inc. (09/02/25)
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  • Assured Compliance Assessment Solution (ACAS)…

    FGS, LLC (Suitland, MD)
    … and troubleshooting issues + Five years of experience administering Red Hat Enterprise Linux , the ACAS host operating system , to include: + Building, patching, ... Assured Compliance Assessment Solution (ACAS) Senior AdministratorSuitland, MD **Requires US Citizenship Yes** **Employment Term and Type: Regular, Full Time**… more
    FGS, LLC (11/13/25)
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  • Software, CNO, Systems Administration…

    Belay Technologies (Annapolis Junction, MD)
    …security. Required Skills: Linux /Windows administration, scripting, network services, system monitoring. Experience Level: Junior to Senior Systems ... (Java, Python, C++), software development lifecycle, debugging, testing. Experience Level: Junior to Senior System Administrator (Levels 1 to 3) Overview: The … more
    Belay Technologies (11/13/25)
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  • Senior Help Desk Specialist - Onsite in

    Booker DiMaio, LLC (Baltimore, MD)
    …Suite. + Experience supporting desktop and laptop operating systems using Windows 11, Linux , and macOS. + Experience in network technologies such as LAN and ... experience is required. We are in need of a Senior Help Desk Specialist to provide IT software, hardware...Responsibilities: + Utilize knowledge and technical expertise of computer systems and general network and infrastructure administration… more
    Booker DiMaio, LLC (10/25/25)
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  • FLEX Senior Software Engineer - SEO

    Marriott (Bethesda, MD)
    …Kubernetes) + Operating Systems : Red Hat Enterprise Linux , Oracle Linux , Windows, CentOS and Mac (OSX) + Network Virtualization: Akamai Global Traffic ... enhancements across the diverse portfolio of Marriott's websites and systems . This individual will serve as a senior...when anomalies are detected, and implement solutions to enhance system performance and stability. + Design & develop JSON-LD… more
    Marriott (09/13/25)
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  • Senior CNO Developer

    ManTech (Annapolis Junction, MD)
    …Python, C, and Assembly. + Deep expertise in managing, configuring, and troubleshooting Linux . + Experience in embedded systems . + Experience in reverse ... MANTECH seeks a motivated, career and customer-oriented ** Senior CNO Developer** **​** to join our team...challenges at the intersection of hardware, software, and embedded systems . **Responsibilities include but are not limited to:** +… more
    ManTech (08/24/25)
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  • Senior Infrastructure / Networking Engineer

    RTX Corporation (Annapolis Junction, MD)
    …Technology (AST), a national asset in the SIGINT domain, is seeking a ** Senior Infrastructure / Networking Engineer** who strives for excellence and has a passion ... the design, develop, test and delivery of advanced high-capacity systems that process modern communications. + You will work...will work with other experienced members in R&D on system development and deployments for the protection of our… more
    RTX Corporation (10/19/25)
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  • Senior DevOps Engineer - $20K Sign On Bonus

    Huntington Ingalls Industries (Fort Meade, MD)
    …fast-paced development team. The ideal candidate will have strong working knowledge in Linux systems containers, administration, and a background in Big Data ... or equivalent and 19 years relevant experience. + Strong knowledge of Linux , including system administration and troubleshooting + Proficient in configuration… more
    Huntington Ingalls Industries (11/15/25)
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