Senior Principal Cyber Security Engineer

General information

Requisition # R60403 Locations USA-VA-Chantilly Posting Date 05/19/2025 Security Clearance Required TS/SCI w/ Poly Remote Type Onsite Time Type Full time

Description & Requirements

Unlock the secrets of intelligence with ManTech! Join a dynamic team at the forefront of national security, providing advanced solutions to government intelligence agencies. Since 1968, we’ve been solving the toughest challenges with groundbreaking tech. Explore thrilling projects in Digital Transformation, Cybersecurity, IT, Data Analytics and Software Development. Elevate your career and make a difference. Your adventure begins now—unleash your potential with ManTech!

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

Responsibilities include but are not limited to:

• Troubleshoot new and current data collection issues

• Troubleshoot system issues that make the system unstable or unusable.

• Deploy and manage all supported and unsupported Splunk Add-ons that are required for specific data sources

• 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

• Forward Configurations and Deployments: Design and deploy forwarders rapidly with centralized configuration management (Splunk Deployment Server).

Minimum Qualifications

• Bachelor’s degree or 4+ additional years of cyber experience in lieu of degree

• 10+ years of experience in a cyber role

• Experience with Security Information and Event Management (SIEM) platforms, and/or Splunk

• Knowledge of Linux systems administration, general operating system security practices, TCP/IP networking, and network security concepts

• Knowledge of Certification & Accreditation processes

• Knowledge of DoD policy and technical security guidance to information systems

• DoD Directive 8570.1 IAT Level II or higher certification or ability to obtain within 6 months.

• Splunk Certification is required

Preferred Qualifications:

• Experience with Linux, Red Hat and CentOS

• Experience with AWS or other cloud environments

• Knowledge of ICS 500-27 for Audit collection requirements

• Knowledge of Enterprise Security Services, Host Base Security Service, Enterprise Vulnerability Scanning Service, and UAM

• Ability to modify feed creation to ingest customer logs in a standard format to meet policy requirements.

Security 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 considers all qualified applicants for employment without regard to disability or veteran status or any other status protected under any federal, state, or local law or regulation.
If you need a reasonable accommodation to apply for a position with ManTech, please email us at careers@mantech.com and provide your name and contact information.