3,230 Results for

Systems Administrator Jobs in Ellicott City, MD

Jobs

Systems Engineer – Data & Analysis Infrastructure Johns Hopkins Applied Physics Laboratory (APL)

Laurel, MD

Possess a BS degree in systems engineering, computer science, computer engineering, engineering science, or related field, or have relevant certifications (such as CompTIA Network+, CompTIA Server+, Linux certifications, etc.) and equivalent experience in systems engineering responsibilities including: developing use cases and requirements, test planning, and performing analysis to balance cost, schedule, and risk. The Signal and Systems Analysis Group (KTA) provides data-driven design and analytical assessments of Anti-Submarine Warfare (ASW) operator in-the-loop system performance to advance the warfighting capabilities of developmental and fielded systems across multiple US Navy domains.

4 days ago

Splunk Administrator Leidos

Suitland, MD

$107,900–$195,050 / year

If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com . August 31, 2026 For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

16 days ago

Systems Integration Technician Leidos

Arlington, VA

$69,550–$125,725 / year

If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com . Experience with ACAS, Azure, DHCP, DNS, HBSS, Hyper-V, Microsoft 365, MECM, SharePoint, SMTP, and Active Directory, as well as an understanding of help desk ticketing tools including Microsoft System Center and ServiceNow.

6 days ago

Dialysis Facility Administrator U.S. Renal Care

Bowie, MD

Continuously monitor to ensure that a safe and sanitary physical environment is maintained throughout the facility; that all equipment is maintained and functions properly; and that adequate and appropriate inventory levels of all supplies are available and used correctly. STAFF DEVELOPMENT/ RETENTION Ensure all staff meet required qualifications for position held and perform duties within limitations established by and in accordance with company policy/procedures, health care professionals practice acts, applicable state and federal laws and regulations.

30+ days ago

Database Administrator Govcio LLC

Fort Meade, MD

$126,000–$146,000 / year

Responsibilities: The Database Administrator (Data Platform Engineer) establishes the data ingest and ELT environment required to transform autonomous pentesting outputs into structured, AI-ready datasets. Experience managing secure data pipelines including automated ingestion and transformation workflows.

2 days ago

Network Security Engineer Credence

McLean, VA

$130,000–$155,000 / year
Quick Apply

Support audit readiness and compliance for CMMC Level 2 and SOC 2, including maintaining network-layer controls in the System Security Plan (SSP), providing firewall and network evidence for assessments, and contributing to ISSO functions as needed. Experience with network monitoring and management platforms such as PRTG Network Monitor, network documentation tools such as NetBox, and network automation and configuration management tools such as Ansible.

Today

Linux System Administrator Johns Hopkins Applied Physics Laboratory (APL)

Laurel, MD

In this role, you will apply Risk Management Framework (RMF) principles, develop new IT capabilities in secure networks, and provide advanced system administration across complex classified infrastructures, helping drive innovation, security, and operational excellence. Have demonstrated experience working with the following operating systems and technologies: Windows Server 2022, Windows 11, and Red Hat Enterprise Linux 8, 9, and 10 or greater, Active Directory integration and authentication services, and DNS, Group Policy and cross-platform access issues.

3 days ago

Cybersecurity Analyst Leidos

Odenton, MD

$87,100–$157,450 / year

SUMMARY: Seeking an Information Assurance (IA) / Cybersecurity Analyst in support of the DISA, Cross Domain Enterprise Services (CDES) contract, with the primary responsibility of supporting the implementation and administration of information security policies, procedures, and technologies to ensure the protection of systems, applications, and data on tactical and development networks. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com .

5 days ago

Systems Administrator Amentum

Hanover, Maryland

$140,000–$190,000 / year

The Windows Systems Administrator will be involved in the testing, preparation and deployment of Active Directory GPO’s and RBAC as well as automated server and workstation imaging and patching utilizing Windows MCM. responsible for completing all training requirements and fulfilling all self-aid/buddy aid responsibilities, participating in emergency response tasks and serving on safety committees and teams.

30+ days ago

Sr. Windows Systems Administrator Astrion

Columbia, Maryland

$145,000–$165,000 / year

Astrion has an exciting opportunity for a highly experienced Senior Windows Administrator to build, secure, and sustain the Windows Server estate, the Windows 11 workstation fleet, and the Active Directory and Windows network services that run across three or more isolated classified networks supporting Department of Defense/Department of War (DoD/DoW) environments in Columbia, MD. The ideal candidate brings deep Windows Server and Active Directory expertise, extensive experience operating inside closed and air-gapped classified enclaves, and a proven record of building and maintaining systems in compliance with Risk Management Framework (RMF) , DoD STIG , and Comply-to-Connect (C2C) requirements.

20 days ago

Sr. Windows Systems Administrator TS/SCI Poly Leidos Holdings Inc

Annapolis Junction, MD

$116,350–$210,325 / year

This role also includes supporting server, router, and firewall configuration, as well as performing security management and application performance optimization activities in an environment made up of VMware server hosts, Windows and Linux guest servers, and Virtual Desktop Infrastructure (VDI). Managing Information Assurance Vulnerability Alerts (IAVAs) and system security scanning in accordance with applicable System Security Plans, ensuring vulnerabilities are identified and remediated quickly and accurately.

30+ days ago

Windows Systems Administrator - TS/SCI w/Polygraph General Dynamics Information Technology

McLean, Virginia

Demonstrated experience with Windows systems engineering and administration, including MSSQL databases, Active Directory Certificate Services (ADCS), VM clusters, Hyper-V, Data Protection Manager, and PowerShell scripting. To ensure our employees are able to protect their income, other offerings such as short and long-term disability benefits, life, accidental death and dismemberment, personal accident, critical illness and business travel and accident insurance are provided or available.

4 days ago

Linux/Windows Systems Administrator - Secret Clearance PROLIM Global Corporation

Maryland, MD

Maintain smooth operation of all computer infrastructure in a multi-user computer system environment, including coordination of efforts with systems, software, and electrical design engineers, Information Systems Security Officers, PC desktop technicians, end users, network engineers, program/project managers, and IT management. Current DoD Secret security clearance (at a minimum), to include a closed investigation date completed within the last 6 years, or must be enrolled in the DoD Continuous Evaluation (CE) Program, in order to be considered; the required security clearance must be maintained as a condition of continued employment.

30+ days ago

Windows Systems Administrator - TS/SCI w/Polygraph GD Information Technology

McLean, Virginia

4 days ago

Sr. Windows Systems Administrator Axient LLC

Columbia, MD

$145,000–$165,000 / year

Astrion has an exciting opportunity for a highly experienced Senior Windows Administrator to build, secure, and sustain the Windows Server estate, the Windows 11 workstation fleet, and the Active Directory and Windows network services that run across three or more isolated classified networks supporting Department of Defense/Department of War (DoD/DoW) environments in Columbia, MD. The ideal candidate brings deep Windows Server and Active Directory expertise, extensive experience operating inside closed and air-gapped classified enclaves, and a proven record of building and maintaining systems in compliance with Risk Management Framework (RMF), DoD STIG, and Comply-to-Connect (C2C) requirements.

30+ days ago

Windows Systems Administrator (Journeyman) Active Secret Peraton

Beltsville, Maryland

$112,000–$179,000 / year
Full time

Must hold (or obtain prior to start) at least one approved certification, maintained as a condition of employment: CASP+ CE, CCNA Cyber Ops, CCNA‑Security, CCNP Security, CEH, CFR, CISA, CISSP (or Associate), Cloud+, CySA+, GCED, GCIA, GCIH, GICSP, SCYBER, VCA‑DCV, PPDA, Agile IC, or SNOW App Dev. Experience with enterprise technologies such as Windows Server, Active Directory, virtualization platforms (e.g., Nutanix), and monitoring tools (e.g., Splunk, SolarWinds), along with basic familiarity with Linux operating systems given the primarily Linux-based environment.

24 days ago

Sr. Windows Systems Administrator TS/SCI Poly Leidos

Annapolis Junction, Maryland

This role also includes supporting server, router, and firewall configuration, as well as performing security management and application performance optimization activities in an environment made up of VMware server hosts, Windows and Linux guest servers, and Virtual Desktop Infrastructure (VDI). • Managing Information Assurance Vulnerability Alerts (IAVAs) and system security scanning in accordance with applicable System Security Plans, ensuring vulnerabilities are identified and remediated quickly and accurately.

24 days ago

Windows Systems Administrator The Josef Group

Columbia, Maryland

Required: Bachelor’s degree in a technical discipline and 15 years’ experience as a System Administrator, OR High school diploma and 20 years’ experience as a System Administrator. Ability to demonstrate cyber/IT related experience with attention to detail, customer service, oral and written communication, and problem solving.

30+ days ago

Windows Systems Administrator (Journeyman) Active Secret Peraton Inc

Beltsville, MD

$112,000–$179,000 / year

23 days ago

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Systems Administrator Jobs in Ellicott City, MD

Systems Engineer – Data & Analysis Infrastructure Johns Hopkins Applied Physics Laboratory (APL)

Splunk Administrator Leidos

Systems Integration Technician Leidos

Dialysis Facility Administrator U.S. Renal Care

Database Administrator Govcio LLC

Network Security Engineer Credence

Linux System Administrator Johns Hopkins Applied Physics Laboratory (APL)

Cybersecurity Analyst Leidos

Systems Administrator Amentum

Sr. Windows Systems Administrator Astrion

Sr. Windows Systems Administrator TS/SCI Poly Leidos Holdings Inc

Windows Systems Administrator - TS/SCI w/Polygraph General Dynamics Information Technology

Linux/Windows Systems Administrator - Secret Clearance PROLIM Global Corporation

Windows Systems Administrator - TS/SCI w/Polygraph GD Information Technology

Sr. Windows Systems Administrator Axient LLC

Windows Systems Administrator (Journeyman) Active Secret Peraton

Sr. Windows Systems Administrator TS/SCI Poly Leidos

Windows Systems Administrator The Josef Group

Windows Systems Administrator (Journeyman) Active Secret Peraton Inc

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