Job Description

MANTECH seeks a motivated and customer-focused Principal Security Engineer to join our team in Chantilly, VA . In this role, you will help design, implement, and sustain mission-driven network 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 network security technologies, as applicable

Minimum Qualifications:

• Bachelor’s degree, or an additional 4+ years of network experience in lieu of a degree
• 7+ years of experience in network support
• 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 network 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.

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