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Senior Cyber Security Engineer Security Clearance

Job in Herndon, Fairfax County, Virginia, 20171, USA
Listing for: Dexian Signature Federal
Full Time position
Listed on 2026-06-09
Job specializations:
  • IT/Tech
    Cybersecurity, Systems Engineer
Job Description & How to Apply Below
Position: Senior Cyber Security Engineer with Security Clearance
Responsibilities include but are not limited to:

• Troubleshoot new and existing data collection issues to ensure accurate and reliable ingestion of security-relevant data.

• Diagnose and resolve system issues that impact stability, performance, or usability.

• Deploy, manage, and maintain supported and unsupported Splunk Add-ons required for specific data sources.

• Develop and maintain documentation, including Body of Evidence (BOE) artifacts, engineering documentation, change management records, system security plans, and accreditation materials, as required.

• Deliver a comprehensive Splunk deployment document detailing specifications, deployment methods, and architectural considerations for production environments.

• Implement and maintain strict role-based access control to ensure data is accessible on a validated need-to-know basis.

• Design and deploy Splunk forwarders using centralized configuration management through the Splunk Deployment Server to support rapid and consistent deployments.

Minimum Qualifications:

• Bachelor’s degree, or 4+ additional years of cyber experience in lieu of a degree.

• 5+ years of experience in a cybersecurity role.

• Experience with Security Information and Event Management (SIEM) platforms and/or Splunk.

• Knowledge of Linux systems administration, general operating system security practices, TCP/IP networking, and network security concepts.

• Knowledge of Certification and Accreditation (C&A) processes.

• Knowledge of DoD policy and technical security guidance for information systems.

• DoD Directive 8570.1 IAT Level II or higher certification, or the ability to obtain within six (6) months.

• Splunk certification is required.

Preferred Qualifications:

• Experience with Linux distributions, including Red Hat and CentOS.

• Experience with AWS or other cloud environments.

• Knowledge of ICS 500-27 audit collection requirements.

• Familiarity with Enterprise Security Services, Host Based Security Services, Enterprise Vulnerability Scanning Services, and User Activity Monitoring (UAM).

• Ability to modify feed creation to ingest customer logs in standardized formats to meet policy and compliance requirements.
Clearance Requirements:

• An active TS/SCI with Polygraph is required.

Physical Requirements:

• Must be able to remain in a stationary position 50% of the time.

• Occasionally moves about inside the office to access file cabinets, office machinery, or to communicate with co-workers, management, and customers via email, phone, or virtual communication, which may involve delivering presentations
Position Requirements
10+ Years work experience
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