• Microsoft Exchange

    BOOZ, ALLEN & HAMILTON, INC. (Laurel, MD)
    Microsoft Exchange Administrator The Opportunity: Are you looking for an opportunity to combine your technical skills with big picture thinking to make an ... or engineering + Ability to design, implement, administer, and support client Microsoft email and messaging services + Ability to maintain and implement a… more
    BOOZ, ALLEN & HAMILTON, INC. (12/19/25)
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  • Exchange and Messaging System Engineer

    TekSynap (Washington, DC)
    …+ Bachelor's in Information Technology or Network Administration. + Certifications: + Microsoft Exchange Server / M365 Administrator + Security+ ... messaging environments, ensuring secure and available email operations. + Manage Microsoft Exchange Online and M365 integration. + Oversee email routing, spam… more
    TekSynap (12/03/25)
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  • Senior Enterprise Messaging Administrator

    Dentons US LLP (Washington, DC)
    …and Collaboration platforms. The Senior Messaging Administrator will focus on Exchange Online and Microsoft 365 environments, requiring deep expertise in ... Senior Enterprise Messaging Administrator Chicago, IL, USSt. Louis, MO, USKansas City,...provide robust support for Active Directory, EntraID, DNS, and Microsoft Exchange , with a specialized focus on… more
    Dentons US LLP (12/13/25)
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  • M365 Administrator

    ManpowerGroup (Washington, DC)
    …**What's the Job?** + Own the administration, configuration, and optimization of Microsoft 365 applications including Teams, SharePoint, Exchange , OneDrive, and ... organization in the technology sector, is seeking a M365 Administrator to join their team. As a M365 ...protect data across the M365 platform, leveraging tools like Microsoft Purview and Defender. + Develop and enforce Entra… more
    ManpowerGroup (12/04/25)
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  • Cloud System Administrator - TS/SCI w/Poly

    General Dynamics Information Technology (Annapolis Junction, MD)
    …and licensing * Ensuring seamless integration, security, and optimal performance of Microsoft 365 applications such as Exchange Online, SharePoint, Teams, and ... of related experience **US Citizenship Required:** Yes **Job Description:** Cloud System Administrator Own the opportunity as a Cloud System Administrator and… more
    General Dynamics Information Technology (10/09/25)
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  • Systems Network Administrator (SNA-2)

    Leidos (Laurel, MD)
    …**Leidos** has a new and exciting opportunity for a **Systems Network Administrator ** in our **National Security Sector's (NSS) Cyber & Analytics Business Area ... difference in National Security!** **Job Summary:** The Systems Network Administrator provides support for implementation, troubleshooting and maintenance of… more
    Leidos (11/18/25)
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  • Systems Administrator

    Koniag Government Services (Washington, DC)
    …+ Manage and maintain enterprise servers and systems infrastructure + Administer Microsoft Exchange , Active Directory, and associated systems + Implement ... Management Solutions,** a Koniag Government Services company, is seeking a Systems Administrator with a Top-Secret clearance with the ability to obtain a SCI… more
    Koniag Government Services (10/01/25)
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  • Network-System Administrator II

    Global Resource Solutions (Washington, DC)
    …Skills: + Thorough knowledge of Microsoft Windows 2008 R2/2012 R2 Server, Microsoft Exchange Server 2003/2010, Microsoft Windows 7/10 operating systems ... detail orientated, and talented individual for the position of Network/System Administrator II. Job Description: Summary: The Network/System Administrator II… more
    Global Resource Solutions (12/19/25)
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  • Systems Administrator IV - Pipeline (TS/SCI…

    COMSO, Inc (Fort Meade, MD)
    Systems Administrator IV - PIPELINE (TS/SCI w/ POLYGRAPH) FORT MEADE, MD (http://maps.google.com/maps?q=FORT+MEADE+MD+USA+20755) Description COMSO, Inc. is a ... The CE certification requirements can be fulfilled with either Microsoft OS, Cent OS/Red Hat OS CE certifications. +...Role Servers, Privileged Account Management (PAM) Services, and MS Exchange are required. + If assigned to Desktop &… more
    COMSO, Inc (12/02/25)
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  • System Administrator (Level 4)

    Kaizen Approach, Inc (Annapolis Junction, MD)
    Kaizen Approach is currently seeking a Systems Administrator to provide implementation, troubleshooting, and maintenance support for complex Information Technology ... of twenty (20) years of experience as a System Administrator (SA) on programs and contracts of similar scope,...III certification, a Computing Environment (CE) certification such as Microsoft OS or CentOS/Red Hat OS, and an ITIL… more
    Kaizen Approach, Inc (11/11/25)
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  • Window System Administrator

    ManTech (College Park, MD)
    …user provisioning and basic performance troubleshooting + Experience with Microsoft Exchange Server administration, including mailbox management, database ... **MANTECH** seeks a motivated, career and customer-oriented **Windows** **Systems Administrator ** to join our team in **College Park, Maryland** . The position is… more
    ManTech (10/14/25)
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  • Senior Sharepoint Administrator

    Deloitte (Baltimore, MD)
    …(on-premises to SharePoint Online or version upgrades) is a plus. + Familiarity with Microsoft 365 services (Teams, OneDrive, Exchange Online) is a plus. + ... migrations and system upgrades to maintain environment on current Microsoft stack + Serves as a subject matter expert...environments + 3-5 years of experience as a SharePoint Administrator or similar role and knowledge of the following:… more
    Deloitte (10/28/25)
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  • Cyber Systems Administrator (Active TS/SCI)

    Northrop Grumman (Elkridge, MD)
    …Server environments to include Active Directory, DHCP, GPO's, DNS, LDAP, MS Exchange , MECM ( Microsoft Endpoint Configuration Manager) MS SQL, and/or WSUS. ... career. We are looking for you to join our team as a **Cyber Systems Administrator ** based out of **Elkridge, MD** . _Please Note: Due to the classified nature of… more
    Northrop Grumman (10/02/25)
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  • Tier 3 Unified Communications Administrator

    CACI International (Washington, DC)
    Tier 3 Unified Communications Administrator Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: TS/SCI with Polygraph ... Instant Messaging (IM), Presence, Audio/Video Streaming with some Public Branch Exchange (PBX) phone support within the enterprise. Responsibilities are based on… more
    CACI International (10/25/25)
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  • Microsoft 365 / Entra Identity Engineer

    Leidos (Washington, DC)
    …+ Prior experience supporting an internationally-based federal agency + SC-300: Microsoft Identity and Access Administrator Associate certification or equivalent ... are seeking a senior-level engineer with deep expertise in Microsoft 365 and Entra to lead the design, implementation,...highly complex M365 services across Entra / Azure AD, Exchange Online, Teams, Intune, and Defender. + 5+ years… more
    Leidos (11/06/25)
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  • Cloud Infrastructure Engineer 2

    Public Consulting Group (Annapolis, MD)
    …visit www.publicconsultinggroup.com . Own operational stability, security, and performance of Microsoft Exchange Online and SMTP services within Microsoft ... Operation Engineer** **Role Summary** Own operational stability, security, and performance of Microsoft Exchange Online and SMTP services within Microsoft more
    Public Consulting Group (11/20/25)
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  • M365 Engineer

    Leidos (Rockville, MD)
    …technologies, including cloud services. + Advanced experience with: + Entra ID (Azure AD) + Exchange Online + Microsoft Intune + Microsoft Purview + M365 ... including but not limited to: Entra ID (Azure AD), Exchange Online, Intune, Teams, Power Platform, Purview. + Implement...Microsoft certifications, such as: + Identity and Access Administrator (SC-300) + Endpoint Administrator (MD-102) +… more
    Leidos (12/06/25)
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  • Cloud Architect - Secret Clearance Required

    NANA Regional Corporation (Washington, DC)
    Microsoft Enterprise Administrator . + At least 2 years of Microsoft Exchange administration experience. + Hands-on experience with Azure administration ... in PowerShell scripting for automation and management tasks. **Desired Certifications:** + Microsoft 365 Certified: Modern Desktop Administrator Associate + … more
    NANA Regional Corporation (11/18/25)
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  • Tier 3 Help Desk Support Engineer

    Koniag Government Services (Washington, DC)
    …Windows SUS Services + Provide intermediate level of troubleshooting for all Microsoft Office Products, Active Directory/ Exchange , and patch management support + ... and self-motivated individual to perform the duties of a Tier 3 System Administrator to support a potential future business opportunity located in Washington, DC.… more
    Koniag Government Services (10/16/25)
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  • Information Technology Customer Support Specialist

    KBR (Bethesda, MD)
    …with supervisor, peer groups, and customers, professionally. All interactions involve exchange or presentation of empathy. + Requires only general supervision and ... of support tools such as, but not limited to: Microsoft Office365 products, CyberArk, Multi-Factor Authentication (Symantec VIP, RSA,...of experience as a local area network (LAN) Systems administrator . + Requires at least 2 years of experience… more
    KBR (12/13/25)
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