• Mid-Level Software Engineer

    Leidos (Gaithersburg, MD)
    **Description** Leidos National Security Sector combines technology-enabled services and mission software capabilities in the areas of cyber, logistics, security ... the right tools, technologies, and tactics to keep pace with an ever-evolving security landscape and succeed in their pursuit to protect people and critical assets.… more
    Leidos (10/05/25)
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  • Network Engineer

    ManTech (Linthicum Heights, MD)
    **MANTECH** seeks a skilled and security -focused **Network Engineer ** to support the Cryptographic Solutions Program within the National Security Systems ... and components + Experience with Nessus, and system administration across Linux/ Windows environments + Understanding of network security principles including… more
    ManTech (11/26/25)
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  • Staff Infrastructure Engineer

    TISTA Science and Technology (Rockville, MD)
    Overview TISTA is seeking a skilled Staff Infrastructure Engineer professional to design, build, manage, and maintain the IT infrastructure that supports our ... into DevOps workflows. + Troubleshoot and optimize infrastructure for reliability, security , and performance. + Apply security best practices including… more
    TISTA Science and Technology (11/19/25)
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  • Integration Engineer SPM (SME)

    Leidos (Bethesda, MD)
    …and exciting opportunity for an **Integration Scrum Team PM** in our **National Security Sector's (NSS) Cyber & Analytics Business Area (CABA)** . Our talented team ... is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical...role requires an experienced Development Team Lead and Systems Engineer to perform as a Scrum Team Project Manager… more
    Leidos (11/07/25)
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  • Principal Network Engineer

    Leidos (Bethesda, MD)
    **Description** **Leidos** has a new and exciting opportunity for a **Principal Network Engineer ** in our **National Security Sector's (NSS) Cyber & Analytics ... . Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical...skills with shell, python, PERL and the like, supporting Windows and Unix environments, as well as proven experience… more
    Leidos (10/31/25)
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  • Senior Endpoint Migration Engineer

    Leidos (Odenton, MD)
    **Description** Leidos is seeking an experienced **Senior Endpoint Migration Engineer ** to join our Defense Enclave Services (DES) team, who will support DOD ... migrate their endpoints to the modern DODNet environment. The Endpoint Migration Engineer will be responsible for working closely with DAFA system administrators and… more
    Leidos (11/22/25)
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  • SaaS Engineer

    CACI International (Aberdeen Proving Ground, MD)
    SaaS Engineer Job Category: Engineering Time Type: Full time Minimum Clearance Required to Start: Secret Employee Type: Regular Percentage of Travel Required: Up to ... Continental US * * * **The Opportunity** CACI is seeking a SaaS Developer Engineer supporting our Army customer at Aberdeen Proving Ground (APG), MD. This is fully… more
    CACI International (11/21/25)
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  • DevOps Engineer -TS/SCI with Poly

    CACI International (Annapolis Junction, MD)
    DevOps Engineer -TS/SCI with Poly Job Category: Engineering Time Type: Full time Minimum Clearance Required to Start: TS/SCI with Polygraph Employee Type: Regular ... * **The Opportunity:** CACI is seeking a talented DevOps Engineer to join our dynamic team in Annapolis Junction,...on escalated issues + Configure and optimize UNIX and Windows operating systems + Implement enhancements to improve system… more
    CACI International (11/05/25)
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  • Staff Modeling & Simulation Systems…

    Northrop Grumman (Linthicum Heights, MD)
    …Possible is our commitment to missions. In rapidly changing global security environments, Northrop Grumman brings informed insights and software-secure technology to ... are looking for a Staff Modeling & Simulation Systems Engineer to join our team in Baltimore, MD. This...languages like Python, C/C++, as well as scripting in Linux/ Windows environments, and experienced in statistics, design of experiments,… more
    Northrop Grumman (10/29/25)
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  • Senior Software Engineer

    CACI International (Laurel, MD)
    Senior Software Engineer Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: TS/SCI with Polygraph Employee Type: Regular ... Opportunity** Join our dynamic team as a Senior Software Engineer and contribute to the maintenance and upgrade of...or 14-16 years of experience without a degree. + ** Security Clearance:** Active TS/SCI with Polygraph. + **Programming Skills:**… more
    CACI International (10/12/25)
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