- Dentons US LLP (Washington, DC)
- Senior Enterprise Messaging Administrator Chicago, IL, USSt. Louis, MO, USKansas City, MO, USWashington DC, DC, USDenver, CO, USAtlanta, GA, USDallas, TX, US Dec 12, ... 2025 **Senior Enterprise Messaging Administrator ** Dentons US LLP is currently recruiting for a...troubleshooting Outlook email clients. + In-depth understanding of Microsoft Windows Server environments, including 2016, 2019, and 2022. +… more
- AeroVironment (Arlington, VA)
- …Regular **Job Description** **Job Summary** The primary role of the **System Administrator ** is to manage and support mission-critical IT infrastructure. This role ... involves day-to-day operations, troubleshooting, and maintenance across Windows and UNIX systems. You'll work directly with both hardware and software systems in a… more
- Infinity Systems Engineering (Alexandria, VA)
- …be more with us! Job Summary: We are seeking a skilled Systems Administrator /Network Engineer to join our mission-driven team. This position offers a broad scope ... troubleshoot Juniper and Cisco switches. + Perform systems administration on Windows and Linux platforms (updates, security, troubleshooting, management). + Maintain… more
- Red River (Chantilly, VA)
- …experience diagnosing and resolving technical issues on end-user laptops, including both Windows and macOS systems, with a solid understanding of operating system ... Fundamentals (AZ-900), CompTIA A+, CompTIA Cloud+, Microsoft 365 Endpoint Administrator Associate (MD-102) **Knowledge** **,** **Skills** **and Abilities** **:** +… more
- AeroVironment (Herndon, VA)
- …and Core 2 + Advanced Technical Expertise. + Deep understanding of Windows , macOS, mobile device operating systems, and working knowledge of Ubuntu/Linux ... or Managing Professional certification. + Microsoft Certified: Modern Desktop Administrator Associate or equivalent. + CompTIA Network+, Security+, or equivalent… more
- Tyto Athene (Reston, VA)
- …both defensive and mission cyber considerations + Serve as Technical Lead and administrator for TALON Data Center and TALON lab IT infrastructure + Maintain data ... **Required:** 10+ years of experience with: **Core infrastructure operations:** Windows /Linux, virtualization, storage, backups, and disaster recovery-standardized via infrastructure-as-code… more
- Leidos (Arlington, VA)
- …Security+ or Systems Security Certified Practitioner (SSCP) ) Training (DISA-US1390 DCWF Windows Systems Administrator ). + Expert knowledge of Windows ... **Description** The Leidos Digital Modernization Sector is seeking a **_Senior Windows Systems Administrator_** in support of the Air Force National Capital (AFNCR)… more
- General Dynamics Information Technology (Chantilly, VA)
- …+ years of related experience **US Citizenship Required:** Yes **Job Description:** Lead Windows Systems Administrator (SME) We are seeking an accomplished Lead ... Windows Systems Administrator to oversee the design, operations, and maintenance of a mission-critical Windows infrastructure that supports analysts and… more
- Link Solutions Inc (Adelphi, MD)
- …appraised for CMMI ML3 for Services and Development. Link Solutions is seeking a Windows System Administrator (Senior-Level) to join our team at Adelphi, MD. + ... active DoD Top Secret Clearance + Non-remote (relocation incentive available) The Windows System Administrator (Senior-Level) will be responsible for the… more
- Black Bear Technology Solutions, LLC (Adelphi, MD)
- Senior Windows Systems Administrator Clearance Required: Top Secret or Secret Clearance Locations: Adelphi, MD Position Overview: The Senior Windows Systems ... management of enterprise systems, storage, patching, and endpoint solutions across Windows platforms. The role ensures the performance, reliability, and security of… more
- ManTech (Chantilly, VA)
- **MANTECH** seeks a skilled and motivated ** Windows Systems Administrator ** to join our team of top Information Technology and Analytic professionals in ... will play a vital role in maintaining and enhancing the Sponsor's Windows environment, contributing to national security through technical excellence. This dynamic… more
- V2X (Springfield, VA)
- …integrity, respect, responsibility, and professionalism. We are hiring a Senior Systems Administrator II Generalist - Windows Server - active TS/SCI clearance ... desired to be Global Information Assurance Certification (GIAC) or GIAC Certified Windows Security Administrator (GCWN) certified. + Strongly desired to be… more
- M. C. Dean (Falls Church, VA)
- …lives, and changing the world for the better. We are seeking a **System Administrator 1** to join our **Security and Electronic Systems (SES)** business Unit. As ... and reviewing system logs. + Support configuration and management of Windows operating systems and install/load operating system software. + Support desktop… more
- M. C. Dean (Falls Church, VA)
- …lives, and changing the world for the better. We are seeking a **System Administrator 1** to join our **Security and Electronic Systems (SES)** business Unit. As ... a High School Diploma **Required Progressive Experience:** + Requires system administrator experience in performing triage on system problems, resolving the system.… more
- V2X (Mclean, VA)
- **Description** **Responsibilities:** + Sustain and improve the organization's Windows infrastructure as part of a collaborative systems team. Your focus will span ... teams including application development and networking + Build and harden Windows servers, establish and manage configuration baselines + Plan, test, install,… more
- General Dynamics Information Technology (Washington, DC)
- …onsite with our customer* US Citizenship Required Desired Certifications: + Microsoft Windows Hybrid Administrator + ITIL 4 Foundation Certification + Microsoft ... None **Job Family:** IT Infrastructure and Operations **Skills:** Linux,Microsoft Windows ,System Administration **Experience:** 5 + years of related experience **US… more
- Leidos (Arlington, VA)
- …Systems Security Certified Practitioner (SSCP)). + Training (DISA-US1384 DCWF Linux System Administrator / DISA-US1390 DCWF Windows Systems Administrator ). + ... our critical Red Hat Enterprise Linux environment. As a Senior System Administrator , you'll be instrumental in designing, implementing, and maintaining robust and… more
- General Dynamics Information Technology (Chantilly, VA)
- …What you need: Experience: 8-10 years of hands-on experience as a Windows Systems Administrator /Engineer. Proven expertise managing Windows Workstations ... None **Job Family:** IT Infrastructure and Operations **Skills:** Domains Automating,Infrastructure, Windows Troubleshooting **Experience:** 9 + years of related experience… more
- St. George Tanaq Corporation (Suitland, MD)
- …Associate (CCNA), Microsoft / Windows Server Certifications Microsoft Certified: Windows Server Hybrid Administrator Associate or Microsoft Certified: Azure ... Senior System Administrator - Network Operation Center WFH Flexible*Suitland, MD...sites. 3. Enterprise Systems Administration - Expert in managing Windows Server and Linux environments, Active Directory, Group Policy,… more
- SAIC (Washington, DC)
- …services delivery to the US Government. + Microsoft Certification(s) including: Windows Server Hybrid Administrator Associate, Endpoint Administrator ... across the Department of Transportation (DOT) Common Operating Environment (COE). The Windows Server Team is responsible for Windows servers, Active Directory,… more
