• 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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  • Exchange Engineer - TS /SCI

    General Dynamics Information Technology (Sterling, VA)
    …RQ208844 **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 an Exchange Engineer joining our team to support...user problems (ServiceNow) as needed **What you'll need:** + Active TS /SCI clearance and ability to obtain… more
    General Dynamics Information Technology (10/15/25)
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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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  • Principal Exchange Engineer

    ManTech (Chantilly, VA)
    **MANTECH** seeks a motivated, career and customer-oriented **Principal Exchange Engineer ** to join our team in **Chantilly, VA.** The position is **onsite.** ... customer service experience strongly desired **Clearance Requirements:** + US Citizenship required and active TS clearance adjudicated within the last 6 years. +… more
    ManTech (09/12/25)
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  • Staff Information Security Engineer

    Zscaler (Washington, DC)
    …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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  • 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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  • Principal Satellite Communications Engineer

    ManTech (Reston, VA)
    …**Preferred Qualifications:** + N/A **Clearance Requirements:** + Must have an active /current Top Secret security clearance. **Physical Requirements:** ... **ManTech** seeks a motivated, career and customer-oriented **Principal Satellite Communications Engineer ** to join our team in the **Reston, VA** location. This is… more
    ManTech (09/18/25)
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  • Field Engineer

    ManTech (Reston, VA)
    …complex systems deployed worldwide **Clearance Requirements:** + Must possess an active /current ** Top Secret ** security clearance. **Physical Requirements:** ... **ManTech** seeks a motivated, career and customer-oriented **Field Engineer ** to join our team in the **Reston,...time + Must be able to communicate, converse, and exchange information with peers and senior personnel + Constantly… more
    ManTech (09/01/25)
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  • Lead Information Security Engineer

    Lumen (Herndon, VA)
    …Skills: + Required (education/experience/skills/competencies): + Candidate must be a US Citizen with an active TOP SECRET clearance Preferred: + 5-7 years in ... committed to teamwork, trust and transparency. People power progress. We're looking for top -tier talent and offer the flexibility you need to thrive and deliver… more
    Lumen (11/14/25)
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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 (10/28/25)
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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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  • Systems Engineer (Aoco)

    Noblis (Chantilly, VA)
    …and team to integrate tactical and national capabilities. Required Qualifications + Active Top Secret /SCI clearance with Counterintelligence (CI) Polygraph. ... is seeking an experienced All-Domain Overhead Cooperative Operations (AOCO) Systems Engineer to support our government client on-site in Chantilly, VA.… more
    Noblis (11/21/25)
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  • GEOINT Systems Engineer

    Sciolex Corporation (Chantilly, VA)
    …stakeholders. + Plan and assess Agile Solution Demos Qualifications & Physical Requirements + Active Top Secret /SCI with Poly + Bachelor's and nine (9) ... ensuring you receive the utmost employee care. Responsibilities As a GEOINT Systems Engineer , will be performing the following functions as a Systems Engineering and… more
    Sciolex Corporation (10/09/25)
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  • Staff Site Reliability Engineer -Federal,…

    Zscaler (Mclean, VA)
    …services within classified environments **What We're Looking for (Minimum Qualifications)** + ** Active Secret Security Clearance required and must be maintained ... levels and monthly + Information Assurance Technician Level 2 certification and Top Secret security clearance \#LI-Onsite \#LI-YC2 Zscaler's salary ranges are… more
    Zscaler (11/12/25)
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  • Senior Cybersecurity Engineer

    ManTech (Washington, DC)
    …CCIE Certification **Clearance Requirements:** + Must be a US Citizen and possess an active or current Top Secret clearance. **Physical Requirements:** + ... **MANTECH** seeks a motivated, career and customer-oriented **Senior Cybersecurity Engineer ** to join our team working in the **Washington, DC Navy Yard.** This is a… more
    ManTech (10/30/25)
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  • ADC Windows Client Engineer , Region…

    Amazon (Herndon, VA)
    …requires that the candidate selected must currently possess and maintain an active TS /SCI security clearance with polygraph. The position further requires ... Infrastructure (RSCI) is looking for an experienced Windows Systems Engineer with a deep knowledge of Windows Active...Active Directory and component systems (DNS, DHCP, NPS, Exchange ) - Security compliance to include hardening the OS… more
    Amazon (10/22/25)
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  • ADC Windows Client Engineer , Region…

    Amazon (Herndon, VA)
    …candidate selected must be a US Citizen and currently possess and maintain an active TS /SCI security clearance with polygraph. The position further requires the ... Infrastructure (RSCI) is looking for an experienced Windows Systems Engineer with a deep knowledge of Windows Active...Active Directory and component systems (DNS, DHCP, NPS, Exchange ) - Security compliance to include hardening the OS… more
    Amazon (09/09/25)
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