System administration Jobs in District of Columbia

81 - 100 of 630 Jobs

System Administrator 4Job Title - System Administrator 4

Boeing CompanyCompany Name - Boeing Company

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Herndon, Virginia, USA

Full-time

This posting is for a contract assignment and is not a full-time employment offer with Boeing. Candidates selected for roles will be employed as contract workers through a Boeing approved 3rd party for the duration of the specified project. The Boeing Defense, Space & Security (BDS), Maritime and Intelligence Systems (M&IS) seeks a System Administrator to join our Mission Systems Operations team in Herndon, VA. Our team focuses on delivering complex solutions in some of the most challenging envi

Senior System Engineer (Government)Job Title - Senior System Engineer (Government)

AT and TCompany Name - AT and T

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Oakton, Virginia, USA

Full-time

Job Description: This position requires office presence of a minimum of 5 days per week and is only located in the location(s) posted. No relocation is offered. AT&T Global Public Sector is a trusted provider of secure, IP enabled, cloud-based, network solutions and professional services to the Federal Government. We are dedicated to recruiting, developing and empowering a diverse, high-performing workforce that is passionate about what they do, committed to our shared values and dedicated to

ServiceNow/SharePoint SME- Top Secret/SCI - Arlington, VAJob Title - ServiceNow/SharePoint SME- Top Secret/SCI - Arlington, VA

General Dynamics Information TechnologyCompany Name - General Dynamics Information Technology

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Arlington, Virginia, USA

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret Clearance Level Must Be Able to Obtain: Top Secret/SCI Public Trust/Other Required: None Job Family: Systems Administration Job Qualifications: Skills: Microsoft SharePoint Server, Scripting, ServiceNow Platform, SQL Databases, Workflow Management Certifications: None Experience: 6 + years of related experience ship Required: Yes Job Description: Seize your opportunity to make a personal impact as a ServiceN

Microsoft Exchange EngineerJob Title - Microsoft Exchange Engineer

Harmonia Holdings Group, LLC.Company Name - Harmonia Holdings Group, LLC.

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Washington, District of Columbia, USA

Full-time

Harmonia Holdings Group, LLC is an award-winning, rapidly growing federal government contractor committed to providing innovative, high-performing solutions to our government clients and focused on fostering a workplace that encourages growth, initiative, creativity, and employee satisfaction. Job Title: Microsoft Exchange Engineer Location: Washington, DC (Onsite) Clearance Requirement: Active TS/SCI Clearance Required We are seeking a highly skilled Microsoft Exchange Engineer to support our D

Senior Systems EngineerJob Title - Senior Systems Engineer

ManTechCompany Name - ManTech

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Fort Meade, Maryland, USA

Full-time

ManTech seeks a System Engineer to join our team in the Ft. Meade, MD area. In this role, you will develop derived requirements for Information Assurance Services (Confidentiality, Integrity, Non repudiation, and Availability); Basic Information Assurance Mechanisms (e.g., Identification, Authentication, Access Control, Accountability); and Security Mechanism Technology (Passwords, cryptography, discretionary access control, mandatory access control, hashing, key management, etc.). Responsibili

Systems EngineerJob Title - Systems Engineer

ManTechCompany Name - ManTech

•

Fort Meade, Maryland, USA

Full-time

Senior System EngineerJob Title - Senior System Engineer

ManTechCompany Name - ManTech

•

Fort Meade, Maryland, USA

Full-time

Senior System EngineerJob Title - Senior System Engineer

ManTechCompany Name - ManTech

•

Fort Meade, Maryland, USA

Full-time

VMware Systems AdministratorJob Title - VMware Systems Administrator

SAICCompany Name - SAIC

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Washington, District of Columbia, USA

Full-time

Job ID: 2506948 Location: WASHINGTON, DC, US Date Posted: 2025-06-24 Category: Information Technology Subcategory: Sys Administrator Schedule: Full-time Shift: Day Job Travel: Yes, 25 % of the Time Minimum Clearance Required: None Clearance Level Must Be Able to Obtain: Public Trust Potential for Remote Work: No Description SAIC is hiring a VMware Systems Administrator to support HHS On-Site in Washington, DC. The VMware Systems Administrator will provide ongoing support to Executives

System Administrator Level 3Job Title - System Administrator Level 3

General Dynamics Information TechnologyCompany Name - General Dynamics Information Technology

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Maryland, USA

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret SCI + Polygraph Clearance Level Must Be Able to Obtain: Top Secret SCI + Polygraph Public Trust/Other Required: None Job Family: Systems Administration Job Qualifications: Skills: Linux, ServiceNow Platform, Unix Certifications: None Experience: 15 + years of related experience ship Required: Yes Job Description: Provides support for implementation, troubleshooting and maintenance of information Technology (I

Systems Administrator / Top Secret / Onsite: Arlington, VAJob Title - Systems Administrator / Top Secret / Onsite: Arlington, VA

Lockheed Martin CorporationCompany Name - Lockheed Martin Corporation

•

Arlington, Virginia, USA

Full-time

Job Description The Advanced Concepts Lab (ACL) at Lockheed Martin's Advanced Technology Laboratories (ATL) is seeking an IT Systems Engineer/Systems Administrator with a demonstrated ability to independently develop solutions to systems administration challenges in heterogeneous computing environments. The selected candidate will serve as a system and network administrator for multiple program and internal R&D systems that support the research and development activities carried out by ACL's en

System Administrator Level 3Job Title - System Administrator Level 3

General Dynamics Information TechnologyCompany Name - General Dynamics Information Technology

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Maryland, USA

Full-time

System AdministratorJob Title - System Administrator

ManTechCompany Name - ManTech

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Columbia, Maryland, USA

Full-time

ManTech seeks a motivated, career and customer-oriented System Administrator, to join our team in Columbia, MD. The team delivers enterprise infrastructure capabilities for a global workforce performing a wide range of missions in defense of our Nation. This effort is the contract vehicle for the Enterprise Infrastructure Services organization overseeing MPO's Enterprise Information Technology (EIT). EIT is MPO's backbone- platform for all Enterprise users. Data Center & Compute Services is the

System AdministratorJob Title - System Administrator

ManTechCompany Name - ManTech

•

Columbia, Maryland, USA

Full-time

System Vulnerability Analyst 3Job Title - System Vulnerability Analyst 3

Realm OneCompany Name - Realm One

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Annapolis, Maryland, USA

Full-time

Are you VIGILANT about your career? RealmOne definitely is! RealmOne was built on the principle that people matter first and foremost. We believe in providing a strong work/life balance by investing in our employees and encouraging professional and personal growth. We do this by offering exceptional benefits, flexible schedules, and the tools necessary to achieve success through paid training, mentoring, and the opportunity to work alongside top-notch security professionals. Join us on this jou

System Vulnerability Analyst 4Job Title - System Vulnerability Analyst 4

Realm OneCompany Name - Realm One

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Annapolis, Maryland, USA

Full-time

Systems Administrator, AdvisorJob Title - Systems Administrator, Advisor

General DynamicsCompany Name - General Dynamics

•

Springfield, Virginia, USA

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret/SCI Clearance Level Must Be Able to Obtain: Top Secret SCI + Polygraph Public Trust/Other Required: None Job Family: Systems Administration Job Qualifications: Skills: Desktop Management, End User Technology, Hardware Management, Virtual Desktop Infrastructure (VDI) Certifications: None Experience: 5 + years of related experience ship Required: Yes Job Description: Transform technology into opportunity as a S

Linux Systems Administrator (Tier I)Job Title - Linux Systems Administrator (Tier I)

American Systems CorporationCompany Name - American Systems Corporation

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Arlington, Virginia, USA

Full-time

Overview AMERICAN SYSTEMS is a 100% employee-owned federal government contractor supporting national priority programs through our strategic solutions in the areas of Information Technology, Test & Evaluation, Program Mission Support, Engineering & Analysis, and Training. Responsibilities As a Tier I Linux Systems Administrator with AMERICAN SYSTEMS you will have the opportunity to do the following: Perform general Systems Administrator functions supporting all HPC users with courteous respons

Systems Administrator Intermediate - TS/SCI requiredJob Title - Systems Administrator Intermediate - TS/SCI required

General DynamicsCompany Name - General Dynamics

•

Fort Belvoir, Virginia, USA

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret/SCI Clearance Level Must Be Able to Obtain: Top Secret SCI + Polygraph Public Trust/Other Required: None Job Family: Systems Administration Job Qualifications: Skills: Computer Servers, Information Technology (IT) Systems, Systems Management Certifications: None Experience: 7 + years of related experience ship Required: No Job Description: Systems Administrator Intermediate - TS/SCI required Transform techno

Junior Platform EngineerJob Title - Junior Platform Engineer

CACI International, Inc.Company Name - CACI International, Inc.

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Sterling, Virginia, USA

Full-time

Junior Platform Engineer Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: TS/SCI Employee Type: Regular Percentage of Travel Required: Up to 25% Type of Travel: Outside Continental US * * * The Opportunity: We are seeking a Junior Platform Engineer to help us develop, build, and deploy full stack systems for our customer's advanced collection systems. In addition to delivering the current version of the systems, you will get to help shape and