611 System Administrator Cyber Security jobs in Washington,DC

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Systems Engineer– Microsoft 365 Security&Compliance / Endpoint Security Engineer (GCC)

Leidos

Washington, DC 20037

OnsitePaid Time OffRetirement Benefit

Expert-level Intune engineering across Windows/macOS/iOS/iPadOS.
Advanced PowerShell for remediation, automation, and OS image manipulation.
Deep experience with Microsoft Defender (XDR, Endpoint, Cloud Apps).
Hands-on with Sentinel SIEM, Function Apps, and cross-platform telemetry pipelines.
Strong understanding of CAP architecture and identity risk enforcement.
Experience with ATO control evidence, compliance mapping, and audit support.

SmartExplore AI is experimental.

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25B Information Technology Specialist

U.S. Army

Washington, DC 20011

OnsiteUrgently HiringEducation AssistanceHealth InsurancePaid Time OffRetirement Benefit

10 weeks of Basic Training
20 weeks of Advanced Individual Training
U.S. Citizen
17 to 34 Years Old
High School Diploma or GED
Meet Tattoo Guidelines
No Major Law Violations
No Medical Concerns

SmartExplore AI is experimental.

New, Posted 1 day ago

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Systems Engineer– Microsoft 365 Security&Compliance / Endpoint Security Engineer (GCC)

Leidos

Washington Navy Yard, DC 20376

~ 4 min OnsitePaid Time OffRetirement Benefit

Expert-level Intune engineering across Windows/macOS/iOS/iPadOS.
Advanced PowerShell for remediation, automation, and OS image manipulation.
Deep experience with Microsoft Defender (XDR, Endpoint, Cloud Apps).
Hands-on with Sentinel SIEM, Function Apps, and cross-platform telemetry pipelines.
Strong understanding of CAP architecture and identity risk enforcement.
Experience with ATO control evidence, compliance mapping, and audit support.

SmartExplore AI is experimental.

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HR & Office Administrator

Commercial Express Hvac Llc

Sterling, VA 20166

~ 35 min OnsiteHealth InsurancePaid Time OffRetirement Benefit

4+ years of experience in HR, payroll, office administration, or related business operations.
Experience with HRIS and payroll systems.
Strong attention to detail and commitment to accuracy.
Experience with timesheet administration and HR compliance processes.
Knowledge of I-9, E-Verify, and background screening requirements.
Proficiency in Microsoft Office (Word, Excel, Outlook, PowerPoint).
Strong organizational, communication, and problem-solving skills.
Ability to manage sensitive and confidential information with professionalism and discretion.

SmartExplore AI is experimental.

New, Posted 15 hours ago

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Zero Trust Information Systems Security Engineer

BOOZ, ALLEN & HAMILTON

Fort Belvoir, VA 22060

~ 27 min OnsiteEducation AssistanceHealth InsurancePaid Time OffRetirement Benefit

6+ years of experience in an ISSE, ISSO, or IT role
Experience with ICAM principles and technologies, including multi-factor authentication, privileged access management, security operations, and security architecture leveraging ICAM solutions such as SailPoint, Radiant Logic, Ping Federate, Delinea, and Okta
Experience with administration and integration of directory services, including LDAP compliant directories such as Active Directory
Experience with SAML, OAuth 2.0, and OpenID Connect ( OIDC ) integrations and troubleshooting protocol exchanges
Experience with DoD architecture, strategic planning, concept of operations, performance attributes, system architecture and design, evolving met hodologies, and statutory and regulatory requirements
Knowledge of Zero T rus t principles and frameworks such as NIST 800-207
Ability to resolve complex identity and federation issues
Bachelor's degree
IASAE II Certification such as CASP+, CISSP, or CSSLP Certification
Applicants selected will be subject to a security investigation and may need to meet eligibility requirements for access to classified information ; TS/SCI clearance is required.

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Senior Linux Engineer

SimVentions, Inc - Glassdoor 4.6

La Plata, MD 20646

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Cyber Operations Capabilities Developer (TS/SCI with CI Poly)

Vantor

Annapolis Junction, MD 20701

$92,000-$195,000/yr

~ 32 min OnsiteHealth InsurancePaid Time OffRetirement Benefit

TS/SCI with CI Poly
Active TS/SCI clearance
Bachelors degree is technical discipline
Minimum of 5 years experience
Strong, recent experience with: C (systems-level programming)
Strong, recent experience with: Python (tooling, scripting, automation)
Proficiency with Git and modern development practices
Cross-compilation for diverse targets
Reverse engineering (e.g., GDB, IDA Pro, Ghidra)
Vulnerability research or exploit development
Development of modular implants or payload frameworks
Process injection or similar low-level techniques
Command and Control (C2) systems (e.g., Mythic, Cobalt Strike, Vermilion Strike)
Network stack programming (sockets, protocols, TCP/IP)

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