Job Description

General information

Requisition #
R67815
Locations
USA-VA-Chantilly
Posting Date
05/19/2026
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 Chantilly, VA

The Senior Principal Cyber Security Engineer will leverage their strong technical background and knowledge to support enterprise-wide cybersecurity operations by providing advanced engineering and technical expertise across Comply-to-Connect (C2C) solutions in both classified and unclassified environments.

Responsibilities include but are not limited to:

• Engineer, design, implement, integrate, and sustain Comply-to-Connect (C2C) deployment support to migrate, deploy, improve, and maintain C2C services.
• Manage and maintain appliances, applications, servers, and supporting infrastructure in both unclassified and classified environments.
• Coordinate with the network service provider to develop and maintain network architecture diagrams.
• Recommend changes and/or technology upgrades to improve performance, ensure standardization, and align with industry best practices.
• Monitor and investigate C2C performance and faults and recommend improvements to system reliability and performance.
• Interact with team members and customers at multiple levels to gather, supply, and coordinate technical information.
• Support Assessment and Authorization activities related to cybersecurity technologies where applicable.

Minimum Qualifications:

• Bachelor’s degree or 4+ additional years of IT experience in lieu of a degree
• 10+ years of cyber experience
• Experience with technologies involved in large-scale enterprise network deployments and data centers.
• Experience deploying and/or supporting enterprise security software products such as firewalls, IPS, Anti-Virus solutions, application firewalls, high availability solutions, network management systems, and virtual systems.
• Knowledge of Windows and Linux systems, general operating system security practices, TCP/IP networking, 802.1x, and network security concepts.
• An active IAT Level II (GSEC, Security+, SSCP, or CCNA-Security) certification or the ability to obtain one within six months of hire.

Preferred Qualifications :

• Experience implementing and using complex software products that involve multiple components.
• Real-time, enterprise-level C2C expertise, including vendor-agnostic services, open-source trends, and proficiency in DoD integration, engineering, and sustainment processes.
• Experience with Cisco Identity Services Engine (ISE).
• Familiarity with tools such as Nmap, Nessus, and tcpdump.

Clearance Requirements:

• An active TS/SCI with Polygraph.

Physical Requirements:

• Must be able to remain in a stationary position 50%.
• Needs to occasionally move about inside the office to access file cabinets, office machinery, etc.
• Frequently communicates with co-workers, management, and customers, which may involve delivering presentations.
• Must be able to exchange accurate information in these situations.

MANTECH 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.