• Sr . Software Engineer TS/SCI…

    Leidos (Alexandria, VA)
    **Description** Leidos has an exciting opportunity for a Sr . Software Engineer ! *Must have an active TS/SCI Polygraph up front. No exceptions.* You will ... team activities; analyze and study complex system requirements, use design software tools, provide support using formal specifications, data flow diagrams, and… more
    Leidos (12/10/25)
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  • Senior Mechanical Engineer - active…

    V2X (Chantilly, VA)
    …most complex challenges with integrity, respect, responsibility, and professionalism. The Senior Mechanical Engineer will provide design and implementation of ... will require an active TS/SCI clearance with a Full Scope Polygraph . Responsibilities + Provide engineering review, coordination, and oversight of operations… more
    V2X (11/25/25)
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  • Principal / Sr . Principal Cyber Systems…

    Northrop Grumman (Fairfax, VA)
    …your career. We are looking for you to join our team as a Principal Cyber Systems Engineer or Sr . Principal Cyber Systems Engineer level based out of McLean, ... may be filled at either a Principal Cyber Systems Engineer or Sr . Principal Cyber Systems ...training to individuals and groups. **Basic Qualifications for a Senior Principal Cyber Systems Engineer :** + A… more
    Northrop Grumman (11/21/25)
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  • Sr Principal Cybersecurity Analyst/Network…

    Northrop Grumman (Chantilly, VA)
    …join our diverse team of engineers, system administrators, and operators as a Sr . Principal Cyber Systems Engineer professional in Chantilly, VA. The successful ... including but not limited to Standard Operating Procedures and VISIO diagrams. ** Senior Principal Cyber Systems Engineer Basic Qualifications:** + Must have… more
    Northrop Grumman (01/01/26)
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  • Sr . Network Engineer

    Arena Technical Resources, LLC (Reston, VA)
    …TS/SCI with CI Polygraph Job Description: The job duties of the Sr . Network Engineer are as follows: - Performnetwork design and engineeringsupport services ... Sr . Network Engineer Location: Reston, VA,...configuration, and maintenance ofFirewalls. - Experience keying and upgrading software onTaclane Cryptodevices. - Understand the operation ofnetwork protocolsandFirewall… more
    Arena Technical Resources, LLC (11/29/25)
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  • Network Security Engineer (Splunk) - TS/SCI…

    General Dynamics Information Technology (Herndon, VA)
    …Regular **Clearance Level Must Be Able to Obtain:** Top Secret SCI + Polygraph **Public Trust/Other Required:** None **Job Family:** Cyber and IT Risk Management ... to make a personal impact as a Network Security Engineer supporting customer activities. GDIT is your place to...MAKE AN IMPACT** + Communicate with team leaders and senior leadership, assess changes, and rapidly change direction in… more
    General Dynamics Information Technology (12/15/25)
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  • Portfolio Systems Engineer , SR

    KBR (Chantilly, VA)
    Title: Portfolio Systems Engineer , SR Portfolio Systems Engineer , SR Belong. Connect. Grow. with KBR! KBR's National Security Solutions team provides ... + Provide decision support and advice on investment strategies + Provide senior -level staff support to coordinate and manage systems engineering actions and… more
    KBR (01/02/26)
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  • Sr System Engineer

    KBR (Chantilly, VA)
    Title: Sr System Engineer Belong. Connect. Grow. with...the future of space defense. KBR is seeking a Senior Systems Engineer to support our customers in ... position requires the employee to provide technical expertise as a Systems Engineer and Technical Assistance (SETA). The ideal candidate will have experience within… more
    KBR (10/21/25)
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  • Sr System Engineer

    KBR (Chantilly, VA)
    Title: Sr System Engineer KBR is seeking a highly qualified Senior System Engineer to support our customer in Chantilly, VA delivering mission-critical ... and software acquisitions Minimum qualifications: + Active TS-SCI/w CI Polygraph + Bachelor's degree in STEM-related discipline; Master's degree preferred + 10+… more
    KBR (12/09/25)
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  • Sr . System Development Engineer

    Amazon (Herndon, VA)
    Description The AWS Cross Domain Services team is seeking a Systems Development Engineer who is passionate about operational excellence. This engineer will help ... and operate these complex systems. As a Systems Development Engineer on the AWS Cross Domain Services team, you...Operate, automate, and troubleshoot complex systems in partnership with software developer peers. - Be given opportunities to grow… more
    Amazon (10/15/25)
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