693 Open Source Analyst Cyber Security jobs in Chantilly,VA

5+ years of experience in cybersecurity, systems architecture or software engineering, or AI/ML solution design
4+ years of experience supporting DoD, Intelligence Community, or federal civilian missions
2+ years of experience designing, deploying, or securing AI/ML pipelines, such as training, inference, or monitoring
Experience with LLM platforms and APIs, such as OpenAI, Anthropic, Azure Open AI, or AWS Bedrock
Experience with Machine Learning frameworks, such as TensorFlow, PyTorch, Scikit-Learn, or Hugging Face
Experience with Machine Learning orchestration and serving platforms, such as SageMaker, Vertex AI, MLflow, or Kubeflow
Experience implementing AI security controls, such as data provenance, model integrity, and supply chain, and integrating AI into operational workflows, such as SOC automation, threat detection, and analytics
Knowledge of AI governance, DoD Responsible AI, and federal compliance
TS/SCI clearance
HS diploma or GED
Clearance: TS/SCI clearance is required

ManTech

Herndon, VA 20170

Securitas

Manassas, VA 20110

Pass a drug screen and background check.
Valid driver's license
Meet all state, county, and municipal licensing requirements for Security Officers.
Must be able to read, write, and speak English.
Proficient Computer Skills: Basic computer knowledge required.
Physical Endurance: Ability to stand and walk for extended periods.
Flexibility: Must be available for weekend shifts.

Leidos

Alexandria, VA 22315

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.

BOOZ, ALLEN & HAMILTON

Arlington, VA 22201

5+ years of experience in defensive cyber operations, cybersecurity engineering, or security platform architecture
3+ years of experience designing security data pipelines such as collection, normalization, enrichment, and routing
2+ years of experience with SIEM platforms such as Splunk ES, Elastic Security, Sentinel, or Chronicle
2+ years of experience with SOAR platforms such as Swimlane, XSOAR, or Phantom
Experience with cyber threat intelligence platforms, including STIX / TAXII and commercial or open-source data feeds
Experience building detection engineering pipelines, threat hunting workflows, and automated response capabilities
Experience with EDR, NDR, or full-packet capture tools such as CrowdStrike, Corelight, or Trellix, and deploying across cloud, on-prem, and disconnected environments such as Kubernetes and OpenShift
Knowledge of Zero Trust DoD IC frameworks and federal compliance
TS / SCI clearance
HS diploma or GED

Battelle

Chantilly, VA 20151

Must be a U.S. Citizen
Active DoD SECRET Clearance or DHS "Enter on Duty" (EOD) or "Full Suitability Approval" (FSA) Background Investigation status
10+ years IT experience with at least 4+ years of that experience in information assurance and IT security
Bachelors Degree (BS/BA)
Certified Information Systems Professional (CISSP)
Motivated self-starter who requires minimal supervision and oversight
Strong organizational, and time management skills, and the ability to meet tight deadlines
Strong Analytical and Writing skills with history of producing quality technical documentation
Proven experience working in collaborative sessions demonstrating strong verbal and written communication skills along with tactful negotiation skills
Experience and expertise in Cyber Physical Systems Assessment, Project Management, Systems and Security Engineering, Cyber Security, Requirements Elicitation, Customer Service & Delivery
Proven knowledge of NIST 800-53 rev3 Operation, Technical, and Managerial Controls, IT, IA and physical security concepts and principles
Experience with Windows and Linux configuration STIG hardening, DISA Security Technical Implementation Guides (STIGs), implementation SCAP Compliance Checker (SCC) and STIG Viewer
Expertise with Plans of Actions and Milestones (POA&M) management
Subject Matter Expertise of the Risk Management Framework (RMF)

L3Harris Technologies

Springfield, VA 22151

Active Top Secret/SCI with CI Poly clearance required
Bachelor's degree and minimum 6 years of prior relevant experience
Graduate Degree and a minimum of 4 years of prior related experience
In lieu of a degree, minimum of 10 years of prior related experience
Experience with threat modeling, vulnerability analysis, and risk management
Experience working with or supporting a Weapons and Tactics (W&T) team, with familiarity in integrating protection strategies
Ability to obtain and maintain a crew operations certification
Must be able to work independently and collaboratively in classified operations centers, supporting 24/7 mission requirements when needed
Please be aware many of our positions require the ability to obtain a security clearance. Security clearances may only be granted to U.S. citizens.
Applicants who accept a conditional offer of employment may be subject to government security investigation(s) and must meet eligibility requirements for access to classified information