Senior Splunk Cyber Security Engineer Security Clearance

Position: Senior Splunk Cyber Security Engineer with Security Clearance
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. 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

* 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

* Enforcing role-based access controls and operational security policies

* Collaborating with cyber analysts and engineering teams to improve detection and response capabilities

* Applying relevant security policies, standards, and technical guidelines to ensure compliance

Minimum Qualifications:

* 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