**ManTech** is seeking a motivated, career and customer-oriented **Cyber Security Engineer** , **Principal** serving as a Splunk Engineer to join our team in the **Chantilly, VA** . **Responsibilities include, but are not limited to:** + 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 + Responsible for Splunk Upgrades to all Splunk Enterprise servers + Integrations with other systems via API or other similar methods + Provide documentation such as body of evidence documents (as needed), engineering documents, change management documents, system security plans, and accreditation documents + Deliver a comprehensive Splunk deployment document to detail the specifications, deployment methods, and other architectural considerations to the production environment. + Maintain a strict role-based access control solution around the data collected, to provide a need-to-know ability + 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 + Oversee Enterprise Security configurations and tuning **Basic Qualifications:** + Bachelor’s degree or 4+ additional years of 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 **Security Clearance Requirements:** + Must possess an active TS/SCI w/polygraph. **Physical Requirements:** + Must be able to remain in a stationary position 75% of the time + Constantly operates a computer and other office productivity machinery, such as a calculator, copy machine and computer printer + Must be able to view and detect information on a computer screen 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.