Principal Cyber Security Engineer

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

In this role, you will support a mission-critical initiative and contribute directly to cybersecurity operations through the administration and engineering of a large enterprise Splunk environment. This position is ideal for professionals with strong hands-on experience in system integration, data management, and cyber defense initiatives. You will play a key role in maintaining and tuning Splunk systems, while collaborating with technical teams and cyber analysts across a dynamic enterprise environment.

Responsibilities include but are not limited to:

• Managing the day-to-day operation of large enterprise Splunk deployments.
• Troubleshooting data collection issues and resolving system conditions affecting stability or integrity.
• Deploying and maintaining both supported and unsupported Splunk add-ons.
• Executing Splunk Enterprise upgrades and patches.
• Configuring and deploying Splunk forwarders using centralized management tools.
• Maintaining and tuning Splunk Enterprise Security (ES) content and performance.
• Managing knowledge objects, data models, dashboards, alerts, and operational content.

Minimum Qualifications:

• Bachelor’s degree, or 4+ additional years of IT experience in lieu of a degree.
• 5+ years of experience in an enterprise and/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).

Preferred Qualifications:

• Splunk certifications such as Architect, Consultant I/II, Admin, or Power User.
• Experience with scripting or programming languages (e.g., Bash, Python, Java, Perl, .NET).
• Familiarity with developing and deploying operational and security use cases within Splunk.

Clearance Requirements

• Must have a current/active TS/SCI with Polygraph.

Physical Requirements

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