Principal Cyber Security Engineer

General information

Requisition #

R61430

Locations

USA-VA-Chantilly

Posting Date

06/27/2025

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 and customer-focused Principal Cyber Security Engineer to join our team in Chantilly, VA. In this role, you will help design, implement, and sustain mission-driven cybersecurity solutions that enable secure enterprise operations. You will provide technical leadership and hands-on expertise in supporting Comply-to-Connect (C2C) systems across both classified and unclassified environments.
 

Responsibilities include but are not limited to:
 

·   Engineering, designing, implementing, integrating, and sustaining Comply-to-Connect (C2C) deployment support to migrate, deploy, enhance, and maintain C2C services

·   Managing and maintaining C2C appliances, applications, servers, and supporting infrastructure in unclassified and classified environments

·   Coordinating with the network service provider to develop and maintain network architecture diagrams

·   Evaluating and recommending changes or technology upgrades to support performance improvements, standardization, and alignment with industry best practices

·   Monitoring and analyzing C2C performance and faults and proposing solutions for optimization

·   Collaborating with other team members and customers across multiple levels to gather, supply, or coordinate technical and operational information

·   Supporting Assessment and Authorization activities related to cybersecurity technologies, as applicable
 

Minimum Qualifications:
 

·   Bachelor’s degree, or an additional 4+ years of cyber experience in lieu of a degree

·   7+ years of experience in cybersecurity

·   Hands-on experience with technologies supporting large-scale enterprise deployments or data centers

·   Experience deploying and/or supporting enterprise security software such as firewalls, intrusion prevention systems (IPS), antivirus solutions, application firewalls, high availability systems, network management tools, and virtualization platforms

·   Strong knowledge of Windows and Linux systems, operating system security practices, TCP/IP networking, 802.1x, and core network security principles

·   IAT Level II certification (GSEC, Security+, SSCP, or CCNA-Security), or ability to obtain within 6 months of hire
 

Preferred Qualifications:
 

·   Experience implementing and supporting complex, multi-component software solutions

·   Familiarity with vendor-agnostic C2C capabilities, open-source cybersecurity tools, DoD integration practices, and sustainment procedures for delivering enterprise C2C expertise

·   Proficiency with Cisco Identity Services Engine (ISE)
 

Clearance Requirements:
 

· An active TS/SCI with Polygraph is required for this position.
 

Physical Requirements:
 

·   Must be able to remain in a stationary position 50% of the time.

·   Needs to occasionally move about inside the office to access file cabinets, office machinery, etc.

·   Frequently communicates with co-workers, management, and customers. Must be able to exchange accurate information in these situations.

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.