775 security administrator jobs at 350 companies in Frederick, MD

3mo
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Security Administrator
Chantilly or Falls Church
$65k-$75k/yr OnsiteFull Time
Amentum
AmentumNYSE: AMTM: Provides engineering, technology, and mission support to government agencies.
1+ YOEHigh school diploma or GED; 1 year min in security-related discipline; 3-5 years administrative security experience; 7+ years personnel security for senior; active Top Secret clearance with polygraph eligibility; strong communication and computer skills.
Microsoft Office Suite
1w
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Security Administrator, Mid
Chantilly, Virginia, United States
$55k-$126k/yr OnsiteFull Time
Booz Allen Hamilton
Booz Allen HamiltonNYSE: BAH: Consulting and technology services for government and commercial clients
1+ YOEProcess personnel security clearances, conduct briefings/debriefings, document records, liaise with agencies; TS/SCI clearance required; 1+ years personnel security experience or equivalent education/experience combinations.
Scattered Castles, Defense Information Security System
1w
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Security Administrator, Mid
Chantilly, Virginia, United States
$55k-$126k/yr OnsiteFull Time
Booz Allen Hamilton
Booz Allen HamiltonNYSE: BAH: Provides technology and management consulting services to diverse organizations.
1+ YOETS/SCI clearance required. Experience with personnel security processes, Scattered Castles or Defense Information Security System, presenting briefings, and documenting clearance records; associate+2yrs, bachelor+1yr, or 3+yrs experience alternative.
Scattered Castles, Defense Information Security System
2mo
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Security/Systems Administrator
Sterling, Virginia, United States
OnsiteFull Time
Nightwing
Nightwing: Provides advanced cyber and intelligence solutions for national security.
TS/SCI with Polygraph required Day 1; support CSP CDS environments; change control, access management, security monitoring, auditing, and accreditation activities.
6d
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Security Systems Administrator
Orlando or Reston or Tampa or United States
RemoteFull Time
Advanced IT Concepts
Advanced IT Concepts: Provides IT systems integration and simulation training for defense.
2+ YOE2+ years supporting and securing enterprise systems, network and cloud environments; knowledge of hardening, patching, vulnerability and incident response; strong troubleshooting and communication skills.
Windows Server, Linux, Entra ID, Group Policy, Purview, Intune, AWS, Microsoft Azure, Google Cloud Platform
1mo
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Chief Information Security Office - Security Administrator I
Arlington, Virginia, United States
HybridFull Time
CNA
CNA: Provides research and analysis for national security and public policy.
2+ YOEBachelor's degree or equivalent, 2+ years administrative/customer service experience, Top Secret clearance eligibility, strong organizational and record-keeping skills, Microsoft Office proficiency, and excellent communication.
Microsoft Office Suite
2mo
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Workday Security Administrator (NCS) - BCIT
Baltimore, Maryland, United States
$101k-$167k/yr OnsiteFull Time
City of Baltimore
City of Baltimore: Provides municipal services and public administration for Baltimore, Maryland.
3+ YOEBachelor's degree in CS/IT/Cybersecurity; 3-5 years Workday security experience; preferred certifications (CISSP, CISA, Workday Pro).
SIEM, GRC, Workday security, SAML, OAuth, MFA, RBAC, PAM
1w
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Systems Security Administrator (Imperva)
Herndon, Virginia, United States
RemoteFull Time
ShorePoint
ShorePoint: Provides cybersecurity and risk management services for federal agencies.
4+ YOEBachelor's degree (or equivalent experience),4+ years cybersecurity experience,Imperva on-prem and Imperva Azure experience,knowledge of security frameworks and RMF,ability to obtain security clearance,U.S. citizenship required.
Imperva, Microsoft Azure, CIS Critical Security Controls, NIST SP 800, Cybersecurity Framework, Risk Management Framework (RMF)
3mo
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Security System Administrator, Lead
Washington, District of Columbia, United States
HybridFull Time
Quzara
Quzara: Managed cybersecurity operations and federal compliance advisory services.
6+ YOEBachelor's in cybersecurity/IT; 6–9+ years in Security Operations; design and implement SOC processes; hands-on with SIEM/SOAR/EDR; strong communication; U.S. citizenship.
SIEM, SOAR, EDR, SOPs
2mo
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Personnel Security Administrator – Junior w/ TS/SCI with FSP
Herndon, Virginia, United States
OnsiteFull Time
VMD Corp
VMD Corp: Provides airport security screening and federal IT services.
1+ YOEEntry-level security data-entry role requiring TS/SCI w/ Full Scope Poly, HS diploma, 1 year data entry/security processing experience.
1d
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Security Administration Team Lead
Arlington, Virginia, United States
$133k-$193k/yr OnsiteFull Time
American Systems
American Systems: Providing strategic engineering and IT solutions for government programs.
10+ YOEExperienced security administrator with Special Access/SCI support, personnel security administration, team coordination, record management, and briefing/report writing skills.
3mo
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Systems Administrator
Winchester, Virginia, United States
OnsiteFull Time
Heven AeroTech
Heven AeroTech: Manufacturing hydrogen-powered long-endurance unmanned aerial systems.
3+ YOEBachelor’s in IT or related field; 3+ years in systems administration; Windows/Linux; network and security; ability to obtain US security clearance.
Windows, Linux, Enterprise Applications, Network Monitoring Tools, Firewalls, IT Security Tools, Asset Management Systems, IT Service Management Tools
3w
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IT Security Administrator (Frederick, Maryland, MD, US, 21704)
Frederick, Maryland, United States
$93k/yr OnsiteFull Time
STULZ Air Technology Systems
STULZ Air Technology Systems: Manufactures precision cooling and humidification systems for data centers.
3+ YOEMinimum 3 years IT/cybersecurity experience; administer endpoint security, identity and vulnerability management; incident response, NIST documentation, Microsoft security technologies; strong analytical, communication, and troubleshooting skills.
endpoint security platforms, identity management, vulnerability management, NIST, Microsoft security technologies, Multi-Factor Authentication, Conditional Access
1mo
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Physical Security System Administrator 
Washington or Virginia
OnsiteFull Time
Unlimited Technology
Unlimited Technology: Provides integrated physical security, cybersecurity, and managed technology services.
5+ YOE5+ years providing technical support to software applications; Windows Server/Domain, WSUS, Hyper-V, Active Directory, Group Policy, DNS, TCP/IP; experience with Gallagher/Genetec/Lenel/Software House and Milestone; strong communication and documentation skills; ability to obtain government clearance.
Windows Server (2022/2025), Windows 11, WSUS, Hyper-V, Active Directory, Group Policy, DNS, TCP/IP, Gallagher, Genetec, Lenel, Software House, Milestone
3mo
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System Administrator
Washington, District of Columbia, United States
$100k-$180k/yr OnsiteFull Time
Envisioneering
Envisioneering: Provides engineering, R&D, and electronic warfare solutions for defense.
10+ YOETS clearance; 10+ years in system, network, security, support, and database administration; DoD 8570 baseline IAT Level II/III; strong multi-tasking.
Cisco IOS, Servers, Networking hardware, System monitoring, Databases, Security tools
2mo
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Security Specialist - Administrative
Arlington, Virginia, United States
OnsiteFull Time
Technology Security Associates
Technology Security Associates: Provides specialized engineering and security services for defense programs.
1+ YOEMinimum 1+ years of general security experience; Top Secret clearance; strong organizational, communication, and MS Office skills.
Microsoft Office
1mo
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Security Admin 2 - Tysons, VA
Tysons, Virginia, United States
OnsiteFull Time
M.C. Dean
M.C. Dean: Design-build and systems integration for complex, mission-critical infrastructure.
6+ YOEHigh School/GED; ability to obtain and maintain DoD Top Secret/SCI clearance; 6+ years personnel security administration; proficiency with DISS, NISS, ACCS, SIMS, C•Cure, SWFT; strong Microsoft Office skills and attention to detail.
DISS, NISS, ACCS, SIMS, Trust Visitor, C•Cure, First Advantage, SWFT, Microsoft Office Suite, Microsoft Excel, Microsoft Word, Microsoft PowerPoint
1mo
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IT- Systems Administrator
Bethesda, Maryland, United States
OnsiteFull Time
ISN Corporation
ISN Corporation: Provides investigative and professional services to federal agencies.
8+ YOESenior IT systems and network administrator with 8-10 years of experience; strong Windows Server, Microsoft 365, networking, VoIP, and storage expertise; security best practices and patch management; able to work independently.
Windows Server, Active Directory, DNS, DHCP, Group Policy, Microsoft 365, Azure AD / Entra ID, Teams, SharePoint, VoIP, NAS/SAN, VMware, Hyper-V, PowerShell, Security best practices, Patch management, NIST 800-171, CMMC
2mo
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Security Officer - Par Time
Hunt Valley or Cockeysville
OnsitePart Time
Admiral Security Services
Admiral Security Services: Provides uniformed security officers and facility protection services.
1+ YOEPart-time security officer with MD/TX license credentials, 1+ year experience preferred, pass background/drug test, customer service skills, MS Office proficiency.
Microsoft Office, Security programs
1mo
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Security Specialist
Arlington, Virginia, United States
OnsiteFull Time
People, Technology & Processes
People, Technology & Processes: Provides IT services and mission support for government agencies.
1+ YOEAssociate’s degree and 1 year as security specialist OR high school diploma/GED and 3 years security experience; knowledge of DISS, DEERS, and RAPIDS.
DISS, DEERS, RAPIDS