Senior Cyber Security Engineer Security Clearance

Position: Senior Cyber Security Engineer with Security Clearance
MANTECH seeks a motivated, career and customer-oriented Senior Cyber Security Engineer to join our team in Chantilly, VA. This role supports a mission-critical cybersecurity initiative and is ideal for professionals with strong technical expertise and a desire to shape the security infrastructure of the future. Responsibilities include but are not limited to:
* You will engineer, design, implement, integrate, and sustain Comply-to-Connect (C2C) deployment support to migrate, deploy, improve, and maintain C2C services across both classified and unclassified environments.

* Manage and maintain appliances, applications, servers, and supporting infrastructure essential to C2C operations.

* Coordinate with the network service provider to develop and maintain detailed network architecture diagrams.

* Evaluate system performance, identify areas for improvement, and recommend technology upgrades in line with best practices and standardization goals.

* Monitor and troubleshoot C2C systems, investigating faults and optimizing performance.

* Collaborate with internal teams and customers at various levels to facilitate communication and project success.

* Provide support for Assessment and Authorization (A&A) activities associated with cybersecurity technologies, as applicable.

Minimum Qualifications:

* Bachelor's degree OR 4+ additional years of cyber experience in lieu of a degree.

* 5+ years of relevant cybersecurity experience.

* Hands-on experience with technologies used in large-scale enterprise networks and data centers.

* Familiarity with enterprise security software products such as firewalls, IPS, antivirus tools, application firewalls, high-availability solutions, network management systems, and virtualized systems.

* Strong understanding of Windows and Linux systems, operating system security principles, TCP/IP networking, 802.1x, and core network security concepts.

* Must possess an IAT Level II certification (GSEC, Security+, SSCP, or CCNA-Security) or be able to obtain one within 6 months of hire.

Preferred Qualifications:

* Experience implementing and maintaining complex software systems involving multiple components.

* Real-time, enterprise-level Comply-to-Connect (C2C) expertise, including vendor-agnostic services and open-source security solutions, with proficiency in DoD integration, engineering, and sustainment practices.

* Familiarity with Cisco Identity Services Engine (ISE).

* Proficiency with tools such as Nmap, Nessus, and tcpdump.
Clearance Requirements:
* Must have a current/active TS/SCI with CI 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, or virtual communication, which may involve delivering presentations.