ManTech seeks a motivated, career and customer-oriented **Principal Cyber Security Engineer** to join our team in **Chantilly, VA or Denver, CO.** **Responsibilities include but are not limited to:** _and engaging!_ + Responsible for day-day operation of large Splunk environment. + Troubleshooting new and current data collection issues + Troubleshooting system issues that make the system unstable or unusable. + Deployment and Managing all supported and unsupported Splunk Add-ons that are required for specific data sources + Integrations with other systems via API or other similar methods + Deliver a comprehensive Splunk deployment document to detail the specifications, deployment methods, and other architectural considerations to the production environment. + Forwarder Configurations and Deployments: Design and deploy forwarders rapidly with centralized configuration management (Splunk Deployment Server). + Oversee Knowledge Object Management such as CIM management and tuning **Minimum Qualifications:** + Bachelor’s degree or 4+ additional years of cyber experience in lieu of degree + 7+ years of cyber experience + 5+ years working in an enterprise environment as a cyber engineer, system administrator or other security personnel + 3+ years of experience with Splunk Enterprise Security + Experience with Unix and Windows operating systems + Experience with network monitoring tools + Knowledge of network protocols + DoD 8570 IAT Level II certification or the ability to obtain within six months of hire **Preferred Qualifications:** + Experience with scripting languages (bash), application development (Java, Perl, Python, .NET), databases and analytical tools + Experience with security and operational related use cases is desired + Splunk certifications: Architect, Consultant I, Consultant II, Admin, Power User **Clearance Requirements:** + Must have a current/active TS/SCI w/Polygraph **Physical Requirements:** + The person in this position 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, and or virtual communication, which may involve delivering presentations. ManTech International Corporation, as well as its subsidiaries proactively fulfills its role as an equal opportunity employer. We do not discriminate against any employee or applicant for employment. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran. If you are a qualified individual with a disability and require a reasonable accommodation to apply for a position with ManTech through its online applicant system, please email us at careers@mantech.com and provide your name and contact information.