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# Senior Splunk Cyber Security Engineer

- **Company:** Mantech International Corporation
- **Location:** Chantilly, VA, United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), .NET Framework, Bash Shell, Unix, Software Documentation, CompTIA Security+, Cyber Security, System Configuration, Perl (Programming Language), Python (Programming Language), Systems Integration, Scripting, Data Management, Cyber Warfare, Splunk, Api Management, Programming Languages
- **Published:** September 10, 2026
- **Apply:** https://dejobs.org/x/x/CD0BD2AB5023424BAE94AA97B0A8BABA/job/

## About the Role

MANTECH seeks a motivated, career, and customer-oriented Senior Splunk 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., * Bachelor's degree, or 4+ additional years of cybersecurity 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 CI 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

## Description

* 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
 * Supporting API integrations and external system connectivity
 * Developing and maintaining detailed engineering and compliance documentation
 * Contributing to Splunk deployment and architecture diagrams and system documentation


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