• Specialist, Software Architect Systems…

    L3Harris (Ashburn, VA)
    …for performing software system troubleshooting and characterizing the software's system performance. The Agile Development Group (ADG) specializes in ... software-hardware integration requirements for unmanned vehicles. + Embrace agile software development and model-based systems engineering (MBSE) processes to… more
    L3Harris (12/05/25)
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  • iOS Developer (Mid - Senior Level)

    System One (Ashburn, VA)
    …We are looking for iOS Mobile Developers with 8-12 years of iOS development experience. Description To support the development , maintenance, and enhancement of ... to sprint planning and backlog refinement * Ensure adherence to platform-specific development standards and best practices * Write and maintain unit and UI… more
    System One (12/31/25)
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  • Sr. System Administrator

    Arena Technical Resources, LLC (Reston, VA)
    Sr. System Administrator Location: Reston, VA, US Job ID: ATR 17710 Job Description Job Title: Sr. System Administrator Location: Reston, VA - Onsite, SCIF ... TS/SCI with CI Polygraph Job Description: The job duties of the Sr. System Administrator are as follows: * Plans, designs, and implements infrastructure changes and… more
    Arena Technical Resources, LLC (01/01/26)
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  • Information Systems Security Manager

    M. C. Dean (Vienna, VA)
    …operations teams to design, implement, and maintain cybersecurity controls and secure system development practices consistent with the established policies and ... System Security Manager (ISSM) is responsible for the development , implementation, and continuous improvement of cybersecurity functions for multiple critical… more
    M. C. Dean (12/13/25)
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  • Senior Security Systems Engineer

    Imagine One Technology & Management (Dahlgren, VA)
    …military system specifications, DoD Cybersecurity policies for both land-based, afloat/tactical systems , or System Security Plan (SSP) CSSE, and the ability ... & Management, Ltd. is seeking two (2) **Senior Security Systems Engineers** . These positions are contingent upon award... Engineering (MBSE), cyber testing, cyber test analysis, or development of secure computing system architectures. +… more
    Imagine One Technology & Management (12/24/25)
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  • Systems Administrator

    CACI International (Norfolk, VA)
    …operation of business systems + Support mainframe, mini, or client/server based systems + Optimize system operation and resource utilization + Conduct basic ... Provide assistance to users in accessing and using business systems + Perform system maintenance and updates...: + Hands-on technical experience + Exposure to enterprise systems + Security awareness development + Process… more
    CACI International (12/05/25)
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  • Senior Systems Engineer (MBSE) (Onsite)

    RTX Corporation (Dulles, VA)
    …traceability of requirements to technical solutions. This role involves developing and maintaining system models using tools such as Cameo Systems Modeler, as ... Cameo Systems /Architecture Modeler to create, analyze, and maintain detailed system models, utilizing SysML, UML, and other relevant modeling languages to… more
    RTX Corporation (10/13/25)
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  • Entry Level - Associate Systems Engineer

    The MITRE Corporation (Mclean, VA)
    …support the development , deployment, and lifecycle management of complex systems . + Contribute to requirements engineering, system architecture and design, ... Collaborate with multidisciplinary teams to solve problems across the system lifecycle, from concept development to ...and model-based testing. + Agile and DevSecOps practices for systems development and delivery. + Systems… more
    The MITRE Corporation (01/09/26)
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  • Lead, Systems Engineering (UAV Propulsion)

    L3Harris (Ashburn, VA)
    …decomposition, allocation, management, verification, and validation of technical products and systems with an emphasis on propulsion subsystem development , ... system integration and engineering test efforts of propulsion systems + Develops or champions new systems ,...Skills: + Experience with and an understanding of aerospace systems , especially in the development of integrated… more
    L3Harris (10/29/25)
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  • AWS Security Manager

    System One (Herndon, VA)
    …modules and automated deployments through CI/CD * Experience with AWS Lambda development and serverless architecture, with the ability to guide engineers, review ... from a security standpoint * Partner with DevOps, engineering, development teams. Train teams on secure cloud practices. *...* Participate in on-call rotations to support 24/7 production systems and respond to incidents as they arise Required… more
    System One (12/26/25)
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