• Information System Security Engineer (ISSE)…

    TekSynap (Washington, DC)
    …Government customers. The Information System Security Engineer (ISSE) is the Subject Matter Expert for identifying security risks and contributing ... support of continuous process improvement. **REQUIRED QUALIFICATIONS** + Mandatory: Must hold an active TOP SECRET clearance with the ability to obtain an SCI +… more
    TekSynap (11/30/25)
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  • Sr. Principal Air Vehicle System Test…

    Northrop Grumman (Washington, DC)
    …future. The FSR will be embedded with a US Navy unit and be the system subject matter expert , providing training on the system hardware and software, as ... has an opening for a **Air Vehicle System Test Engineer - Engineering Field Service Representative** (FSR) to join...location after the initial 24-month assignment. + Active DoD Top Secret clearance that is in-scope or… more
    Northrop Grumman (11/16/25)
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  • UC Engineer - Principal

    Amentum (Fort Meade, MD)
    …etc. * Cisco Certified Network Professional (CCNP) - Collaboration certification * Subject Matter Expert of Cisco Unified Communications Manager (CUCM), ... to data flow, security policies, and interoperability **Requirements:** * Subject Matter Expert in UC...up to 20% **Clearance Required:** * Must have active Top Secret clearance with SCI eligibility **Minimum… more
    Amentum (12/09/25)
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  • Senior Lead Engineer - Public Sector

    Lumen (Washington, DC)
    …solutions to meet the objectives of the team. The candidate should be considered the Subject Matter Expert ( SME ) in multiple technologies, architectures, ... will be able to rapidly identify and resolve problems, engineer , identify, and become proficient in the latest technology...a US Citizen with an active Department of Defense TOP SECRET clearance **Compensation** This information reflects… more
    Lumen (01/09/26)
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  • Senior RF/Electrical Engineer (Vaxcom)

    Parsons Corporation (Chantilly, VA)
    … Engineer ** to join our team! In this role you will get to **serve as the Subject Matter Expert ( SME ) on Electronic Warfare (EW) for a large, complex ... **Experience in foreign field operations.** **Security Clearance Requirement:** An active Top Secret SCI w/Polygraph security clearance is required for… more
    Parsons Corporation (11/26/25)
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  • Lead Systems Engineer

    ManTech (Chantilly, VA)
    …+ Leadership & Mentoring: Lead technical projects, mentor junior engineers, and act as a subject matter expert ( SME ). + Providing server/operating system ... is seeking a motivated, career and customer-oriented Lead Systems Engineer to join our team in Chantilly, VA. This...technical projects, mentor junior engineers, and act as a subject matter expert ( SME… more
    ManTech (12/17/25)
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  • Senior RF/Antenna Engineer

    CACI International (Fairfax, VA)
    Senior RF/Antenna Engineer Job Category: Engineering Time Type: Full time...proposals. + Serve in a consulting role as a Subject Matter Expert ( SME ... Minimum Clearance Required to Start: TS /SCI Employee Type: Regular Percentage of Travel Required: Up...* * * **The Opportunity:** As a Senior RF/Antenna Engineer , you will lead the development and analysis of… more
    CACI International (12/25/25)
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  • Senior Cybersecurity Engineer

    ManTech (Washington, DC)
    …authorization + Provide cybersecurity Risk Management Framework (RMF) support + Serve as a subject matter expert in the validation of the implementation of ... **MANTECH** seeks a motivated, career and customer-oriented **Senior Cybersecurity Engineer ** to join our team working in the **Washington,...a US Citizen and possess an active or current Top Secret clearance. **Physical Requirements:** + Must… more
    ManTech (10/30/25)
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  • Facility Operations Center Technical Team Lead,…

    Amazon (Arlington, VA)
    …opportunities. - Establish performance benchmarks and conduct audits to drive effectiveness. - Subject matter expert for data center infrastructure. - Work ... and conducting assessments. The TTL serves as a FOC expert technical resource in data center critical infrastructure, operations,...US citizen and currently possess and maintain an active Top Secret security clearance with SCI eligibility.… more
    Amazon (01/05/26)
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  • Nautical

    UIC Government Services and the Bowhead Family of Companies (Alexandria, VA)
    …Developer - Senior + Cloud Application Developer - Master + Cloud Application Developer - SME + DevSecOps Engineer - Journeyman + DevSecOps Engineer - Senior ... + DevSecOps Engineer - Master + DevSecOps Engineer - SME + Technical Writer -...Secret clearance at this location. Applicants may be subject to a pre-employment drug & alcohol screening and/or… more
    UIC Government Services and the Bowhead Family of Companies (10/30/25)
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