• Systems Engineer SME - Exchange

    General Dynamics Information Technology (Washington, DC)
    …**Job Description:** **Senior Principal Systems Engineer - Exchange Messaging - Active Top Secret Required** Seize your opportunity to make a ... personal impact as a **Senior** **Principal Systems Engineer for Exchange Messaging** with GDIT. We're...8140/8570 IAT III compliance + **Security Clearance Level** : Active Top Secret + **Required… more
    General Dynamics Information Technology (11/06/25)
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  • Exchange Engineer - Active

    ENS Solutions (Sterling, VA)
    Our work depends on an Exchange Engineer joining our team to support Government activities in Washington, DC, Sterling, VA, or Annapolis Junction, MD As an ... Exchange Engineer supporting the Government, you will...production networks + Experience with PowerShell + Experience with Active Directory Benefits Essential Network Security (ENS) Solutions, LLC… more
    ENS Solutions (10/16/25)
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  • Principal Systems Engineer - active

    V2X (Springfield, VA)
    …Springfield, VA location. The position is required to be onsite. The position requires an active Top Secret /SCI clearance and the ability to obtain and ... responsibility, and professionalism. We are hiring a Principal Systems Engineer - active TS /SCI clearance...and services to include, but not be limited to, Active Directory, Exchange , Internet Information Services (IIS),… more
    V2X (11/25/25)
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  • Microsoft Exchange & Messaging…

    General Dynamics Information Technology (Chantilly, VA)
    …RQ209576 **Type of Requisition:** Regular **Clearance Level Must Be Able to Obtain:** Top Secret SCI + Polygraph **Public Trust/Other Required:** None **Job ... Experience with Windows DNS and DHCP + Experience integrating Exchange with Active Directory, Azure AD, and...DoD 8570/8140 certification + BA/BS (or equivalent experience) + TS /SCI with Polygraph + Location: On Customer Site +… more
    General Dynamics Information Technology (10/29/25)
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  • Linux Engineer - TS /SCI…

    General Dynamics Information Technology (Chantilly, VA)
    …RQ207328 **Type of Requisition:** Regular **Clearance Level Must Be Able to Obtain:** Top Secret SCI + Polygraph **Public Trust/Other Required:** None **Job ... Training within six (6) months of Hire Date. + **Security Clearance Level:** TS /SCI with Polygraph is required. Successful candidates are expected to have related… more
    General Dynamics Information Technology (09/16/25)
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  • Calling all Mid-Career TS Cleared SW…

    Northrop Grumman (Dulles, VA)
    …development, C++, Bash Scripting experience + _U.S. Citizenship with a current or active Top - Secret clearance at the time of application_ _Principal ... application development, C++, Bash Scripting experience + _U.S. Citizenship with a current or active Top - Secret clearance at the time of application_ This… more
    Northrop Grumman (10/23/25)
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  • Requirements Engineer

    General Dynamics Information Technology (Springfield, VA)
    …RQ209188 **Type of Requisition:** Regular **Clearance Level Must Be Able to Obtain:** Top Secret SCI + Polygraph **Public Trust/Other Required:** None **Job ... and tomorrow is smarter. Our work depends on a TS /SCI cleared Requirements Engineer joining our team...& A/V Support + Exceptional interpersonal, client-facing skills + Active TS /SCI clearance and eligibility to obtain… more
    General Dynamics Information Technology (10/26/25)
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  • Infrastructure Engineer T3

    CACI International (Sterling, VA)
    Active Roles Server, and Privileged Account Management (PAM) **Qualifications:** _Required:_ + Top Secret with SCI eligibility + US citizen + Bachelor's ... Infrastructure Engineer T3 Job Category: Information Technology Time Type:...Time Type: Full time Minimum Clearance Required to Start: TS /SCI Employee Type: Regular Percentage of Travel Required: Up… more
    CACI International (11/25/25)
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  • Software Engineer /Systems Administrator

    Cinteot (Springfield, VA)
    …Linux Administration experience Education: Bachelor (or 4 years additional experience) Security Clearance: Top Secret with SCI and Full Scope Poly Benefits: + ... Software Engineer / Systems Administrator (location: Springfield, VA) The...install, configure, troubleshoot, diagnose, and resolve problems with Microsoft Exchange , Microsoft Windows 2012 Server, and Active more
    Cinteot (11/06/25)
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  • Staff Information Security Engineer

    Zscaler (Mclean, VA)
    …control processes within the SCIF **Minimum Qualifications** + US citizenship and active US Top Secret ( TS ) clearance (must be maintained) + 5+ years in ... be more agile, efficient, resilient, and secure. Our cloud native Zero Trust Exchange platform protects thousands of customers from cyberattacks and data loss by… more
    Zscaler (10/11/25)
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  • High Speed Guard Engineer

    System One (Springfield, VA)
    …Location: Springfield, VA Type: Contract To Hire Contractor Work Model: Onsite Security Clearance: Active TS /SCI High Speed Guard Engineer to support the ... products. + Engineer , design, and implement HSG rulesets. Required Qualifications: + Active TS /SCI Clearance + Ability to successfully pass and maintain a… more
    System One (12/05/25)
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  • Staff Software Engineer - Java, AWS, TCS…

    Zscaler (Mclean, VA)
    …S3, RDS, DynamoDB, and messaging systems like Kafka or SQS + US citizenship with active US Top Secret /SCI security clearance **What Will Make You Stand ... efficient, resilient, and secure. Our cloud native Zero Trust Exchange platform protects thousands of customers from cyberattacks and...join our IT Cloud Engineering team. **This role requires Top Secret Security Clearance, which must be… more
    Zscaler (11/04/25)
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  • Machine Learning Engineer

    William C Brown Inc (Springfield, VA)
    …Required Location Springfield Full-Time/Part-Time Full-Time Exempt/Non-Exempt Exempt Security Clearance Requirements Active TS / SCI Clearance. This position is ... safe and tomorrow is smarter. Our work depends on TS /SCI cleared Machine Learning Engineer joining our team to support our intelligence customer inSpringfield,… more
    William C Brown Inc (09/16/25)
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  • Systems Engineer & Process SME

    KBR (Chantilly, VA)
    …Advise on acquisition strategies and source selections as directed. Required Qualifications: + Active TS /SCI + Bachelor of Science/Bachelor of Arts (BS/BA) in ... Title: Systems Engineer & Process SME Belong. Connect. Grow. with...commercial tools + Experience using G-Forge, J-SMART, TIER + Active TS /SCI with Polygraph Belong, Connect and… more
    KBR (11/07/25)
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  • High Speed Guard Engineer

    CACI International (Springfield, VA)
    …** Engineer , design, and implement HSG rulesets.** **Qualifications:** **_Required:_** ** Active TS /SCI Clearance with the ability to successfully pass ... High Speed Guard Engineer Job Category: Information Technology Time Type: Full...Time Type: Full time Minimum Clearance Required to Start: TS /SCI Employee Type: Regular Percentage of Travel Required: Up… more
    CACI International (12/01/25)
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  • Cloud Support Engineer - Days

    ManTech (Vienna, VA)
    …with Google Workspace or Microsoft Office collaboration tools **Clearance Requirements:** + An active /current Top Secret clearance is required for this ... **MANTECH** seeks a skilled and mission-focused **Cloud Support Engineer (CSE)** to join our team in **Tysons, VA.** The Cloud Support Engineer will support… more
    ManTech (11/22/25)
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  • Solution Train Engineer

    SAIC (Chantilly, VA)
    …years or more experience. Relevant experience to be substituted in lieu of degree. + Active Top Secret /SCI clearance with Polygraph. + Proven experience with ... **Description** SAIC is seeking a **Solution Train Engineer ** to support SAIC's Prime Program, Landmark AOS in Chantilly, VA. Landmark AOS is a large SETA program,… more
    SAIC (11/06/25)
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  • Sr Engineer - Federal

    Lumen (Herndon, VA)
    …and wavelength division multiplexing + **Candidate must be a US Citizen with an active TOP SECRET /SCI Level clearance** Preferred Qualifications + Bachelor's ... trust and transparency. People power progress. We're looking for top -tier talent and offer the flexibility you need to...world and shape the future. **The Role** The Senior Engineer will participate in multiple team environments and provide… more
    Lumen (12/03/25)
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  • IT Systems Engineer

    SAIC (Chantilly, VA)
    …online operations This position is located in **Chantilly, VA** and requires an ** active TS /SCI clearance with Polygraph** . Job responsibilities include, but ... **Description** SAIC is seeking an **IT Systems Engineer ** to develop updated guidance for online operations...integration of new technologies with existing systems. **Qualifications** + Active TS /SCI with Polygraph. + Bachelors and… more
    SAIC (09/24/25)
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  • Information System Security Engineer

    ManTech (Chantilly, VA)
    …Cybersecurity, or other cyber discipline. **Security Clearance Requirements:** + Must have a current/ active Top Secret security clearance with eligibility to ... **MANTECH** seeks a motivated, career and customer-oriented **Information System Security Engineer (ISSE)** to join our team in **Chantilly, VA.** **Responsibilities… more
    ManTech (11/29/25)
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