Senior Splunk Cyber Defense Engineer

MANTECH; Chantilly (VA); On-site; USD 120,000 - 150,000; Full time

Job summary

MANTECH in Chantilly, VA seeks a Senior Splunk Cyber Security Engineer to support a mission-critical initiative by administrating and engineering a large enterprise Splunk environment. You will work with cyber analysts and technical teams to monitor, analyze, and secure data across the enterprise.

The role requires hands-on Splunk experience, ES operations, and both Unix and Windows proficiency, with DoD 8570 IAT Level II certification preferred. A current TS/SCI with CI Poly is required.

Qualifications

• Bachelor’s degree required or 4+ years of cybersecurity experience in lieu of a degree.
• 5+ years in an enterprise or cybersecurity-focused environment.
• Experience with Splunk administration and engineering.
• Experience with Splunk Enterprise Security (ES) operations and configurations.
• Proficiency with Unix and Windows environments.
• DoD 8570 IAT Level II certification (e.g., Security+, CCNA-Security, GSEC).

Responsibilities

• Manage the day-to-day operation of large enterprise Splunk deployments.
• Troubleshoot data collection issues and resolve system conditions affecting stability or integrity.
• Deploy and maintain both supported and unsupported Splunk add-ons.
• Execute Splunk Enterprise upgrades and patches.
• Configure and deploy Splunk forwarders using centralized management tools.
• Maintain and tune Splunk Enterprise Security (ES) content and performance.
• Manage knowledge objects, data models, dashboards, alerts, and operational content.
• Support API integrations and external system connectivity.
• Develop and maintain detailed engineering and compliance documentation.
• Contribute to Splunk deployment and architecture diagrams and system documentation.

Skills

Splunk administration

Splunk engineering

Unix environments

Windows environments

Cybersecurity experience

Education

Bachelor’s degree

Tools

Splunk Enterprise

Splunk ES

Scripting (Python, Bash)

Job description

MANTECH in Chantilly, VA seeks a Senior Splunk Cyber Security Engineer to support a mission-critical initiative by administrating and engineering a large enterprise Splunk environment. You will work with cyber analysts and technical teams to monitor, analyze, and secure data across the enterprise.

The role requires hands-on Splunk experience, ES operations, and both Unix and Windows proficiency, with DoD 8570 IAT Level II certification preferred. A current TS/SCI with CI Poly is required.