Senior Cyber Security Engineer

MANTECH • chantilly, virginia, United-States • Posted June 16, 2026

Location chantilly, virginia
Job Type Full-time
Category Other-General
Posted June 16, 2026

MANTECH seeks a motivated, career and customer-oriented Senior Cyber Security Engineer to join our team in Chantilly, VA .

In this role, you will support mission-critical cybersecurity operations by designing, deploying, and maintaining secure, resilient data collection and monitoring solutions that enable informed decision-making across the enterprise.

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.

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